NEC Express5800 Series
Web-based Promise Array
Management Professional User's Guide
(Linux Version)
(For N8103-105 Disk Array Controller)
1st Edition
08-2007
856-840000-889-A
(7) NEC will not guarantee the proper operation of the open source software including Linux
kernels. Please be sure to implement and operate the Linux system based on the principle of
self-responsibility.
Contents
1. Overview ....................................................................................................................1
1.1 Web-based Promise Array Management Professional.......................................................... 1
1.2 Precautions ........................................................................................................................... 2
2. Installation/Uninstallation.........................................................................................3
2.1 Operation Environment for WebPAM PRO ......................................................................... 3
2.2 Installing WebPAM PRO...................................................................................................... 3
2.3 Uninstalling WebPAM PRO................................................................................................. 4
3. Operation....................................................................................................................5
3.1 Starting and Exiting WebPAM PRO..................................................................................... 5
3.1.1 Controlling WebPAM PRO with a Local Computer .................................................. 6
3.1.2 Controlling WebPAM PRO with a Remote Computer............................................... 7
3.1.3 Exiting WebPAM PRO............................................................................................... 7
3.2 WebPAM PRO Operation Window ...................................................................................... 8
3.2.1 Using WebPAM PRO for the First Time.................................................................... 8
3.2.2 WebPAM PRO Operation Screen............................................................................. 10
3.3 Icons ............................................................................................................................... 11
3.4 Managing Users.................................................................................................................. 13
3.5 Several Settings and Information Review .......................................................................... 16
3.5.1 Subsystem (ST EX4650EL) Icon............................................................................. 16
3.5.2 Controller ................................................................................................................. 19
3.5.3 Enclosure.................................................................................................................. 22
3.5.4 Physical Drives......................................................................................................... 22
3.5.5 Physical Drive.......................................................................................................... 24
3.5.6 Disk Arrays .............................................................................................................. 26
3.5.7 Disk Array................................................................................................................ 26
3.5.8 Logical Drives.......................................................................................................... 28
3.5.9 Logical Drive ........................................................................................................... 28
3.5.10 Spare Drives............................................................................................................. 30
3.5.11 Logical Drive Summary........................................................................................... 30
3.6 Creating Disk Array or Logical Driver............................................................................... 31
3.6.1 Automatic Configuration ......................................................................................... 31
3.6.2 Express Configuration.............................................................................................. 31
3.6.3 Advanced Configuration.......................................................................................... 33
3.6.4 Adding Logical Drives............................................................................................. 36
3.7 Deleting Disk Array or Logical Drive................................................................................ 37
3.7.1 Deleting Disk Array ................................................................................................. 37
3.7.2 Deleting Logical Drive............................................................................................. 37
3.8 Redundancy Check............................................................................................................. 38
3.8.1 Scheduling Redundancy Check................................................................................ 40
3.9 Media Patrol ....................................................................................................................... 44
3.9.1 Scheduling Media Patrol.......................................................................................... 46
3.10 Rebuild ............................................................................................................................... 50
3.10.1 Hot Spare Rebuild.................................................................................................... 50
3.10.2 Hot Swap Rebuild .................................................................................................... 50
3.10.3 Manual Rebuild........................................................................................................ 51
3.11 PDM ............................................................................................................................... 53
3.12 Transition............................................................................................................................ 56
3.13 Transport............................................................................................................................. 61
3.14 Initializing Logical Drive ................................................................................................... 63
3.15 Creating or Deleting Spare Drives ..................................................................................... 64
3.15.1 Creating Spare Drives .............................................................................................. 64
3.15.2 Deleting Spare Drives .............................................................................................. 66
3.16 Expansion........................................................................................................................... 67
3.17 Event ............................................................................................................................... 71
3.18 Collecting Configuration Information................................................................................ 73
Appendix A First Logon...............................................................................................74
Appendix B Report Monitoring ...................................................................................76
1. Overview
1.1 Web-based Promise Array Management
Professional
Web-based Promise Array Management Professional (hereafter abbreviated for WebPAM PRO)
is a Web-based application that locally or remotely manages N8103-105 Disk Array Controller
provided by Promise.
WebPAM PRO only supports Mozilla Firefox 1.5 or later (when monitoring from the Linux
environment) and Microsoft Internet Explorer (IE) 6.0 or later (when monitoring from the
Windows environment) as its browser. After installing WebPAM PRO, the following features
become available in the system.
„ Creating or deleting the following logical arrays on the graphical operation screen of
the browser
– RAID0 (data striping with one or more hard disk drives)
– RAID1 (data mirroring with two hard disk drives)
– RAID5 (data striping with parity with more than two hard disk drives)
– RAID1 spanning (same as RAID10. Data mirroring and striping with four hard disk
drives)
„ Checking consistency among logical drives (redundancy check)
„ Checking media error in disks (media patrol)
„ Auto-recovering degraded logical drives if entered into the state (rebuild)
To manage N8103-105 remotely from the management computer, WebPAM PRO must be
installed in the machine to which N8103-105 is connected. These two computers must be set to
allow communication with each other via TCP/IP. HTTPS or SSL is used for communication via
TCP/IP in order to endure security and encrypt transfer data.
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1.2 Precautions
Be sure to read the following notes and precautions before using WebPAM PRO:
„ It is strongly recommended to provide media patrol or redundancy check routinely for
all logical drives and HDDs to be connected. Whether the media patrol or the
redundancy check is used may be determined as follows depending on the environment
of your system.
Redundancy
check
Environment in which your system is always subject to load.
--- Redundancy check can continue at a constant rate under
heavy system load
Media patrol
Environment in which your system is subject to comparatively
small load in any period including the night.
--- Media Patrol has lower priority than other tasks in the system,
so it may make little progress under heavy system load
The above action allows you to find subsequent defects (due to degradation such as
aging) in files of low access frequency and unused areas as soon as possible. In
rebuilding after replacement of a HDD due to a failure, subsequent defects may be
found in remaining HDDs. In such a case, the system cannot be recovered. Thus,
detecting subsequent defects as early as possible is extremely effective as preventive
maintenance. Periodical redundancy check or media patrol is effective to keep the
stable operation of your system. It is strongly recommended to take the action once per
week or at least once per month. For the detailed explanation and routine action, see
the description on the scheduling of the redundancy check or media patrol in this
manual. Note that a media patrol task has been scheduled to be done on AM0:00 every
Wednesday by default.
„ Setting for security is required when you log on to WebPAM PRO first time. See
"Appendix A First Logon."
„ To start WebPAM PRO, more than 255 colors must be selected in the screen setup.
„ A message that indicates “Unknown”may be registered in the Event Frame of
WebPAM PRO when the system is under heavy load such as the case when mutilple
background activities are running at the same time. Even in that case, all the
background activities are properly done and will successfully be finished, and the
messages will be registered in syslog. Please close WebPAM PRO and then restart it.
„ The “HTTP 500 Error” window may be displayed when some load is added during
operation of WebPAM PRO or, in particular, while multiple background activities are
running. In this case, refresh the screen from the Refresh tab. For the Refresh tab, see
Section 3.3.
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2. Installation/Uninstallation
2.1 Operation Environment for WebPAM PRO
The following operation environment is required for the proper operation of WebPAM PRO.
- Hardware
NEC EXPRESS5800 server available for the “N8103-105 Disk Array Controller (SAS)”
- Software
RHEL AS/ES 4 Update 5 or later
ML4SP2 or later
IMPORTANT:
„ Only users authorized as root are permitted to install
and uninstall WebPAM PRO.
„ If you have used Web-based Promise Array Manager
(WebPAM, N8103-101/103 management utility), be
sure to uninstall WebPAM before installing WebPAM
PRO. You cannot use WebPAM PRO with WebPAM.
For uninstalling WebPAM, see "Web-based Promise
Array Manager User’s Guide (Linux Version)”.
2.2 Installing WebPAM PRO
1. Untar the WebPAM PRO installation module.
Ex.) As the WebPAM PRO installation module is “WPPInst-1.00.tar.gz”:
# tar -zxvf WPPInst-1.00.tar.gz
2. Execute the WebPAM PRO installation script as follows:
# ./WPPInst.sh –e
3. Check that WebPAM PRO has been successfully installed.
WPP: Installation completed. Please reboot the system.
After installation completed, restart the system.
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2.3 Uninstalling WebPAM PRO
IMPORTANT: Follow the procedure described in this
chapter to uninstall WebPAM PRO.
NOTE: WebPAM PRO is required for managing the
RAID system. Do not uninstall WebPAM PRO unless
you have to uninstall for maintenance including the
upgrade of the utility.
1. Go to the folder that WebPAM PRO has been installed.
# cd /opt/Promise/WebPAMPRO.
2. Execute the WebPAM PRO uninstallation script as follows.
# ./WPPUninst.sh
3. Check that WebPAM PRO has been successfully uninstalled.
If the installation has finished successfully, the following messages will appear.
WPP: Uninstallation completed. Please reboot the system.
After installation completed, restart the system.
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3. Operation
This chapter describes how to start WebPAM PRO and operations on screens appearing after
starting WebPAM PRO.
3.1 Starting and Exiting WebPAM PRO
IMPORTANT:
„ For a specific controller, do not start more than one
web browser or more than one tab in a browser
concurrently.
„ You need a certificate for security when logging in for
the first time. Install the security certificate according
to Appendix A.
„ Opening the WebPAM PRO screen with Internet
Explorer 7 always causes [Certificate Error] to appear
at the top of Internet Explorer. However, this does not
affect proper operations of WebPAM PRO.
„ When using Internet Explorer 7, a certificate warning
is always displayed on the upper right of the Internet
Explorer screen. This has no effect on WebPAM Pro
operation.
„ The default user name and password are
"administrator" and "password," respectively. At the
first logon, enter "administrator" and "password" as
the user name and password, respectively. For
changing the administrator’s password after the logon,
see "3.4 Managing Users." The user name and
password for logon to WebPAM PRO are accounts
exclusively used for WebPAM PRO. They are
different from the user name and password used for
logon to OS.
„ When you start WebPAM PRO first time, messages
with the date of 1970s may be registered. This has no
effect on WebPAM PRO operation.
NOTE: Depending on the OS used, browser, and/or color
scheme, the images shown in this manual may be
different from the actual images.
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3.1.1 Controlling WebPAM PRO with a Local Computer
1. Start WebPAM PRO by either of the following methods.
- Double-click the WebPAM PRO icon on the desktop.
- <On RHEL> Select [Application] (the main menu on the panel) → [Accessory] →
[WebPAMPRO]. Then click [WebPAMPRO]. <On Miracle> Select [Start] (the main
menu on the panel) → [Applications] → [Utilities]. Then click [WebPAMPRO].
2. The Security Alert window will appear. See Appendix A to install the certificate.
3. If the “Security Error: Domain Name Mismatch” message is displayed, click OK.
4. Perform the following operation on the logon screen.
„ Enter your user ID and password in the [User Name] and [Password] fields,
respectively. (At the first logon, specify "administrator" and "password" as the user ID
and password, respectively.)
„ Click [Login].
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3.1.2 Controlling WebPAM PRO with a Remote Computer
NOTES:
„ If using a proxy server for making access to the
Internet, you need to bypass the proxy server. See
Appendix A for the setting procedure.
„ If a firewall function is running on the system (server),
you may not controll from the remote computer. In
this case, change the setting to make it possible to
connect from the remote computer (e.g. check the port
setting for firewall).
„ The procedure provided below is for connecting from
the Windows environment. If you want to connect
from the Linux environment, after performing Steps 1
and 2 shown below, follow the Steps 2 and 3 in “3.1.1
Controlling WebPAM PRO with a Local Computer”
instead of Step3 below. Then go back to Step 4 below.
1. Start the Web browser.
2. Enter the IP address of the Promise RAID system to be controlled in the browser
address and press Enter.
For example, if the IP address is "10.10.10.10," type
"https://10.10.10.10:8443/promise."
If a session with the remote system can be established, the WebPAM PRO logon screen
appears.
3. The Security Alert window will appear. Click [Yes].
The [Block by Security Enforcement] screen may appear. Click [Add] to register
WebPAM PRO to a zone in the trusted site.
4. On the logon screen, perform the following operations:
„ Enter your user ID and password in the [User Name] and [Password] fields,
respectively. (At the first logon, specify "administrator" and "password" as the user ID
and password, respectively.)
„ Click [Login].
3.1.3 Exiting WebPAM PRO
Click [Logout] on the WebPAM PRO Header of the WebPAM PRO operation window to exit
the WebPAM PRO operation window. Click [x] at the upper right corner of the WebPAM PRO
logon window to exit it.
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3.2 WebPAM PRO Operation Window
3.2.1 Using WebPAM PRO for the First Time
1. Click the Subsystem/Host Management icon in the Tree View appearing at the left side of the
screen.
2. Click the Add Subsystem/Host tab in the screen appearing at the right side of the screen.
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3. Make sure that "127.0.0.1" is entered in the Subsystem/Host Port IP address field, and click
the [Submit] button.
The host PC information appears in the Tree View.
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3.2.2 WebPAM PRO Operation Screen
The WebPAM PRO window is mainly configured with three parts; Tree View, Management
Window, and Event Frame.
WebPAM PRO Header
Function tab
Tree View
Management Window
Event Frame
Tree View
The Tree View can indicate the configuration of the RAID system hierarchically in the similar
way as Windows Explorer. Each item at a specific level can be expanded by displaying the
relevant information at the lower levels.
Management Window
The information appearing in the Management Window varies depending on the item selected in
the Tree View. The window allows the information set on users and/or devices to be checked or
updated or logical drives to be created, maintained, deleted or monitored. The information to be
displayed includes text and list boxes, fields and buttons. In each function tab, various tasks and
processes can be controlled. Function tabs unavailable depending on the status of logical drives
or HDDs are grayed out.
Event Frame
The Event Frame indicates the list of events. The Event Frame can be either displayed or not
alternately by selecting [Show Event/Hide Event] on the WebPAM PRO Header. See "3.17
Events" for details.
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3.3 Icons
When you click the link to an icon on the Tree View, several setting and status display screens
appear on the Management Window. The features grayed out on the Management Window are
unavailable. For details of features, see the relevant chapters.
Tree View
Management Window display
Home icon
Indicates the version information of WebPAM
PRO.
Indicates the name of the current logon
user in parentheses.
User Management tab
Administrative Tools icon
Subsystem/Host Management tab
Software Management tab
Indicates the user, host and software
management information in WebPAM
PRO.
Lists user names registered currently in the
Information tab. Logging on to WebPAM PRO as a
super privilege user, you can create, delete or set
users in the Create or Delete tab. Logging on to
WebPAM PRO as another user, you can only change
your password and Display Name.
User Management icon
Subsystem/Host Management icon
Indicates the IP address of the host, the firmware
version of the controller and the Display Name.
You can change privilege levels of users in the
User Privilege tab.
(Displayed at logon as a super
privilege user)
Indicates the information on the current
host.
Logging on to WebPAM PRO as a super
privilege user, you can set the interval for
refreshing the Event Frame. The Event Frame
can be selected out of 15, 30, 60 and 300
seconds. The default is 30.
Software Management icon
(Displayed at logon as a super privilege
user)
Indicates the version of WebPAM PRO, firmware
version and host information including its IP
address.
Host icon
Indicates the information on the host
including its IP address.
Logging on to WebPAM PRO as a super
privilege user, you can change privilege levels of
users in the User Rights tab.
Clicking [Submit] in the Refresh tab allows the
screen to be updated to the latest status. If you
click [Submit], confirmation dialog "Are you sure
you want to refresh" appears. Then click [OK].
Indicates the information on the installed RAID
card. You can provide settings for background
tasks including redundancy check and media
patrol and scheduling and get configuration
information. See the following description for
details.
ST EX4650EL icon
(Subsystem icon)
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Tree View
Management Window display
Indicates the information on BIOS and drivers. In
addition, you can provide various settings
including performance, display battery status and
display or change buzzer setting.
Controller icon
Indicates the enclosure information. See the
following description for details.
Enclosure icon
Indicates the information on all connected HDDs.
Physical Drives icon
Indicates HDDs in the enclosure and
connected HDDs.
Indicates the information on disk arrays. You can
provide creation, deletion, rebuild, transition or
PDM for disk arrays here.
Disk Arrays icon
Indicates HDDs in the enclosure and
connected HDDs.
Indicates the information on logical drives. You
can initialize logical drives and provide
redundancy check for each logical drive.
Logical Drives icon
Displays the list of logical drives installed
in this host.
Indicates the information on spare drives. You
can create or delete spare drives here.
Spare Drives icon
Indicates the information on all logical drives
subordinate to the controller. The displayed
information is the same as that appearing when
you click a logical drive subordinate to Disk
Arrays.
Logical Drive Summary icon
Displays the battery.
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3.4 Managing Users
Creating user account
To create a new user account, follow the procedure described below:
1. Logon to WebPAM PRO as an administrator, or a super privilege user.
2. Click the User Management in the Tree View and then click the Create tab in the
Management Window.
3. Set the items in the Create tab as shown in the table below:
Item name
Description
Available characters
User Name
Account used at login
Alphanumeric characters of 1
- 31 bytes
New Password
Password
Alphanumeric characters of 0
- 31 bytes (Always set the
password for security
enforcement.)
Retype Password
Display Name
Privilege
Same as the value entered in
the New Password field
Name of user
Alphanumeric characters of 0
- 10 bytes
Privilege to be given to the
user
Enable
Check the checkbox.
Privileges are defined as described in the table below.
Privilege
Description
View
Users of the privilege can set or check every status but cannot
create or modify any status.
Maintenance
Users of the privilege can provide rebuild, PDM, transition,
media patrol and redundancy check.
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Privilege
Description
Power
Users of the privilege can create (but cannot delete) disk
arrays and logical drives, change RAID levels and stripe sizes
and set or change components of disk arrays, logical drives
and physical drives
Super
Users of the privilege have all access authorities. The users
can create, delete or change all disk arrays, logical and
physical drives and users.
4. After completing the entry, click [Submit].
If the user is created successfully, message "User was created successfully" appears.
The created user is added to the list in the Information tab.
Setting or changing a user account
You may select an existing user and change the display name in the Settings tab and the
password in the Password tab.
If you logon to WebPAM PRO as a super privilege user, you can select the User Privilege tab in
the Subsystem/Host Management window to change the privilege levels of users.
(Selecting the User Privilege tab and clicking the link of the displayed IP address allows the
privileges of registered users to be changed through pull-down menus.)
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Deleting User Account
1. Logon to WebPAM PRO as an administrator, or a super privilege user.
2. Click the User Management in the Tree View and then click the Delete tab appearing in
the Management Window.
3. Check the checkbox located to the left of each user to be deleted and click [Submit].
The confirmation dialog box appears. Click [OK].
Now the specified user accounts are deleted.
IMPORTANT: Administrator accounts cannot be deleted.
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3.5 Several Settings and Information Review
Clicking an icon on the Tree View allows the relevant information to be displayed on the
Management View.
In the Management Window, you can view the following information or set several features.
3.5.1 Subsystem (ST EX4650EL) Icon
If you select the subsystem (ST EX4650EL) icon in the Tree View, the controller information
screen appears in the Management Window. This screen indicates the information on BIOS and
drivers. In addition, the screen allows you to set various information including performance,
provide redundancy check and check or delete scheduling of media patrol.
Information tab
The Information tab indicates the information on the subsystem.
Clear Statistics - Clears the statistical information accumulated for the controller. Do not
manipulate this item because it is provided only for maintenance.
Settings tab
The Settings tab allows you to set an alias of the subsystem. If you enter a name in the Alias
field and click [Submit], the subsystem name in the Tree View will be changed to the entered
name at the screen update timing.
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Firmware Update tab
The Firmware Update tab allows the firmware for the RAID card to be updated from WebPAM
PRO. Do not manipulate this tab generally because it is provided only for maintenance.
Health tab
The Health tab indicates the health status of the controller, disk arrays, logical drives, spare
drives and connected HDDs.
Event tab
If you click the center of the Event tab, then the log information saved in the RAMs on the
RAID card (runtime events) appears.
If you click the downward arrow at the right end of the tab, then the log information (subsystem
events) saved in NVRAMs appears in addition to runtime events.
NOTE: You cannot sort the list in this screen.
Background Activities tab
If you click the center of the Background Activities tab, then the progresses of tasks being
executed, the priority of each tack and other information appear.
Clicking the link of a task being progressed allows detailed information to be displayed further.
- 17 -
If you click the downward arrow at the right end of the tab, then a menu item for changing the
priorities of tasks (Settings) and those for starting tasks appear.
Settings menu
Rebuild Rate
Set the priority of rebuild processing. The default is Medium.
Logical Drive Initialization Set the priority of logical drive initialization. The default is Medium.
Rate
Media Patrol Rate
Set the priority of media patrol. The default is Low.
Redundancy Check Rate Set the priority of redundancy check. The default is Medium.
Migration Rate
PDM Rate
Set the priority of expansion. The default is Low.
Set the priority of PDM. The default is Medium.
Set the priority of transition. The default is Medium.
Set the reassigned block threshold. The default is 32.
Transition Rate
Reassigned Block
Threshold
Error Block Threshold
Enable Media Patrol
Set the error block threshold. The default is 32.
Set whether the media patrol is enabled or not. The default is
[Enable].
Enable Auto Rebuild
Set whether the auto rebuild is enabled or not. The default is [Enable].
When you change a setting value but want to return it to the value at the screen display, click
[Reset]. To change a setting value and enable the new value, click [Submit]. To return to the
recommended default value (set in the above screen image), first click [Default] and then
[Submit].
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IMPORTANT: The information is set to proper values by
default. Do not change the settings.
Scheduler tab
If you click the center of the Scheduler tab, then tasks already scheduled are listed.
One or more tasks may be scheduled. If you click the link of a scheduled task, the detailed
settings appear.
This screen allows you to change the information on a scheduled task. The procedure is the
same as that for creating a schedule.
If you click the downward arrow at the right end of the tab, you can create a new schedule or
delete an existing schedule. See the description of each task for details.
Configuration tab
For details of the Configuration tab, see "3.18 Collecting Configuration Information."
3.5.2 Controller
If you expand the Controllers icon in the Tree View, then the information on the controller
connected now appears. Clicking the icon of the controller displayed by the expansion allows
the information to be displayed in the Management Window. On the screen, you can check the
status information of the controller or provide settings for batteries and buzzers.
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Information tab
The Information tab indicates the information on the controller.
Settings tab
The Settings tab allows you to set alias of the controller, provide settings on S.M.A.R.T.
detection or set write cache of the controller. The information is set to proper values by default.
As a rule, do not change the settings.
IMPORTANT:
„ The information is set to proper values by default. As
a rule, do not change the settings.
„ If you put or remove a checkmark in Enable SMART
Log or Enable Coercion check box, it is validated
immediately, regardless of clicking of Submit or Reset
button.
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<Description of major items>
Adaptive Writeback Adaptive Writeback Cache controls the write cache mode for all of the logical
Cache
drives per controller base.
Checked:
When the following conditions match, the write policy of all logical drives
under the controller sets to “Write Through”, regardless of the write policy
setting for individual logical drive.
- Operational Status: status EXCEPT FOR “Fully Charged”
- Estimated Hold Time: less than 70 hours
- Battery Temperature: Above 60 centigrade.
Unchecked:
The write cache mode of individual logical drive depends on the setting of
each logical drive.
For details of the settings of battery, see “Battery” section described below.
For details of the settings of write cache mode for each logical drive, see
“3.5.9 Logical Drive.”
Battery tab
The Battery tab indicates the current information on the battery if connected.
<Description of major items>
Operation Status
Fully Charged: The battery is fully charged.
Charging: The battery is being charged.
Indicates the estimated hold time of the battery.
Indicates the temperature of the battery.
Estimated Hold Time
Battery Temperature
Without battery connection, message "No Battery detected" appears.
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Buzzer tab
If you click the center of the Buzzer tab, the current buzzer setting appears.
Clicking the downward arrow at the right end of the tab and selecting "Settings," you can
change the buzzer setting. If the setting is changed, click [Submit] to enable the new setting.
Buzzer ringing is disabled by default.
3.5.3 Enclosure
If you expand the Enclosure icon in the Tree View, then the overview of the current enclosure
and the information on connected physical drives appear.
Information tab
The information tab indicates the information on the enclosure.
FRU VPD tab
The FRU VPD tab indicates the information on the controller and battery.
3.5.4 Physical Drives
If you click [Physical Drives] below the Enclosure icon in the Tree View, then the information
on physical drives connected to the enclosure appears.
Information tab
The Information tab lists all physical drives.
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Global Settings tab
The Global Settings tab allows you to provide settings on write and read caches for all physical
drives.
IMPORTANT:
„ “SATA Drive Settings” is not supported.
„ The write cache option is provided for HDDs and
different from the cache on the disk array controller.
For the setting of write cache for logical drives in
battery installation, see the description of setting write
cache for each logical drive in "3.6.5 Logical Drive."
„ It is recommended to set write cache for HDDs to
[Disable] (no check). If you feel poor performance of
HDDs, take proper measures for preventing
instantaneous power interruption including use of an
uninterruptible power supply (UPS) and set the write
cache to [Enable] (checking).
„ Even if you change the following settings, they return
to the default values after restarting the system.
- Enable Write Cache
- Enable Read Lock Ahead Cache
- Enable Command Queuing
- Enable Read Cache
BBM tab
The BBM (Bad Block Mapping) tab allows you to check bad blocks in all physical drives.
Detecting an irreparable block in a physical drive, WebPAM PRO registers the information in
this list.
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3.5.5 Physical Drive
If you click a specific Slot icon below Physical Drives in the Tree View, then the information on
the HDD appears in the Management Window.
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Information tab
<Description of major items>
Operation Status
OK
The physical drive operates normally.
The physical drive is being rebuilt.
The physical drive is running PDM.
The physical drive is running media patrol.
The physical drive is running transition.
The physical drive is running migration.
Force Offline has been done.
Rebuilding
OK, PDM Running
OK, Media Patrol Running
OK, Transition Running
OK, Migration Running
Dead, Forced Offline
OK, Forced Online
Dead
Force Online has been done.
The Disk Array of which the physical drive
consists is in Degraded or Offline status.
Stale, PFA
S.M.A.R.T. error has occurred.
Settings tab
The Settings tab allows you to set an alias of the physical drive.
If you change the value to another, click [Submit] to fix it.
Force Offline/Online tab
The Force Offline/Online tab enables you to force an online physical drive to go offline or an
offline physical drive to go online.
IMPORTANT: Forcing a physical drive offline or online
is likely to cause data loss. Be sure to back up your data
before you proceed.
Clear tab
The Clear tab only appears when either of the following conditions is present.
- A fault occurs in a physical drive configuring logical drives and the physical drive contains
obsolete logical drive information incompletely.
- A preventive maintenance error occurs in a physical drive.
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3.5.6 Disk Arrays
If you select the Disk Arrays icon in the Tree View, all disk arrays are listed in the Management
Window.
Information tab
The Information tab lists existing disk arrays.
Create tab
For the Create tab, see "3.6 Creating Disk Array and Logical Drive."
Delete tab
For the Delete tab, see "3.7 Deleting Disk Array and Logical Drive."
3.5.7 Disk Array
If you click a specific disk array (DA) icon below "Disk Arrays" in the Tree View, then the
information on the disk array appears in the Management Window.
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<Description of major items>
Operation Status
OK
The disk array operates normally.
Degraded
One of the members of the disk array is in
abnormal status.
Offline
The disk array is in offline status.
The disk array is being rebuilt.
The disk array is under PDM.
OK, Rebuilding
OK, PDM Running
OK, Transition Running
OK, Migration Running
Transport Ready
The disk array is under Transition.
The disk array is under expansion.
The disk array is ready for transport.
Settings tab
The Settings tab allows you to enable or disable the alias, media patrol and PDM.
IMPORTANT: If an error occurred in any HDD in
logical drive while the PDM feature is being enabled, the
data is copied onto the spare drive automatically.
Consequently, the slot location initially assigned for a
physical drive configuring logical drives may be changed.
Consideration must be taken into account to use the PDM
feature. See "3.11 PDM" for details.
Create LD tab
For the Create LD tab, see "3.6 Creating Disk Array and Logical Drive."
Delete LD tab
For the Delete LD tab, see "3.7 Deleing Disk Array and Logical Drive."
Background Activities tab
If you click the center of the Background Activities tab, the BGA being run in the selected disk
array appears. Clicking the arrow at the right end of the tab allows the BGA start menu
executable at the RAID level (including expansion, rebuild, PDM and transition) to be displayed.
See the section describing each BGA for details.
Transport tab
For the Transport tab, see "3.13 Transport."
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3.5.8 Logical Drives
If you select the Logical Drives icon in the Tree View, all logical drives are listed in the
Management Window.
Information tab
The Information tab lists existing disk arrays.
3.5.9 Logical Drive
If you click a specific Logical Drive icon below "Logical Drive View" in the Tree View, then the
information on the HDD appears in the Management Window.
Information tab
<Description of major items>
Operational Status
Operation Status
OK
The logical drive operates normally.
The logical drive is in Critical condition.
The logical drive is in Offline condition.
The disk array is ready for transport.
The logical drive is being rebuilt.
Critical
Offline
Offline, Transport Ready
Critical, Rebuilding
OK, Redundancy Checking The logical drive is under redundancy check.
OK, Initializing The logical drive is being initialized.
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Current Write Policy
This item indicates the status of the current write cache for this logical drive. The status varies
depending on the setting of write cache for each logical drive, setting of write cache for the
entire controller (Adaptive Writeback Cache), existence of battery connection and battery status
in the battery connection environment. For Adaptive Writeback Cache, see “3.5.2 Controller.”
Setting of Adaptive Battery status
Writeback Cache
Write Policy (setting of Current Write Policy
write cache for each
logical drive)
Disable
Enable
No battery connected or
abnormal status
Write Back
Write Back
Write Through
Write Back
Write Through
Write Back
Battery connected and
normal status
Write Through
Write Back
Write Through
Write Through
Write Through
Write Back
No battery connected or
abnormal status
Write Through
Write Back
Battery connected and
normal status
Write Through
Write Through
Settings tab
Alias
Alias name
Read Cache: Uses cache in reading.
Read Policy
Read Ahead: Uses cache in reading and provides read ahead. Improves
performance by read ahead before request.
No Cache: Does not use cache in reading.
Write Through: Does not use cache in writing.
Write Policy
Write Back: Always uses cache in writing. It is expected that the setting can
improve write performance.
However, despite the setting, the actual write cache status may vary depending
on the setting of write cache for the controller (Adaptive Writeback Cache) and
the battery status. See the description of the Current Write Policy in the
Information tab in "3.5.9 Logical Drive" for details.
If you change either or both of the policies, click [Submit] to enable the change.
IMPORTANT: If you change an option for Read Policy,
it is validated immediately, regardless of clicking of
Submit or Reset button.
Background Activities tab
If you click the center of the Background Activities tab, the BGA being executed in the selected
disk array appears. Clicking the arrow at the right end of the tab allows the BGA start menu
items executable at the RAID level (including Initialize and Redundancy Check) to be displayed.
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See the description of each BGA for details.
Check Table tab
If a consistency error is detected during redundancy check and the error cannot be repaired, the
error is registered in the Check Table tab.
Check Table Type
All: Indicates all error types.
Read Check: Lists read errors.
Write Check: Lists write errors.
Inconsistent Block: Lists inconsistent blocks detected by
redundancy check.
#
No.
Table Type
Type of Read Check, Write Check or Inconsistent Block
LBA of first block
Start Logical Block Address
Count
Number of successive blocks starting from the above LBA
3.5.10 Spare Drives
If you click the Spare Drives icon in the Tree View, the information on spare drives appears in
the Management Window.
Information tab
The Information tab indicates the status of the spare drives being set.
Create tab
For the Create tab, see "3.15.1 Creating a spare drive."
Delete tab
For the Delete tab, see "3.15.2 Deleting a spare drive."
3.5.11 Logical Drive Summary
The Logical Drive Summary indicates the information on all logical drives below the controller
collectively. The displayed contents are the same as those appearing when you click a specific
logical drive below disk arrays.
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3.6 Creating Disk Array or Logical Driver
A disk array can be created in any of the following three ways.
Automatic Configuration
Express Configuration
Advanced Configuration
Checks the number of unconfigured HDDs connected currently and
creates disk arrays of a proper capacity and RAID level and logical
drives automatically.
Creates disk arrays and logical drives semi-automatically only if you
select a RAID level fit to the environment used and the number of
logical drives to be created.
Creates disk arrays and logical drives if you select or enter every
parameter.
3.6.1 Automatic Configuration
1. Click Disk Arrays in the Tree View.
2. Click the Create tab in the Management Window and select Automatic Configuration.
3. Click [Submit].
Disk arrays and logical drives are automatically created.
In the automatic configuration, the RAID level to be created is automatically determined
depending on the number of free HDDs as follows:
RAID0 for a single HDD
RAID1 for two HDDs
RAID5 for three HDDs
RAID5 for four HDDs
3.6.2 Express Configuration
1. Click Disk Arrays in the Tree View.
2. Click the Create tab in the Management Window and select Express Configuration.
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The following options can be set.
Redundancy
Determines whether redundant logical drives are created or not.
If you check the checkbox, RAID1, RAID5 or RAID10 is created
depending on the number of connected HDDs available for creating
logical drives.
If you do not check the checkbox, RAID0 is created.
Note: If only a single HDD available for creating logical drives is
connected, RAID0 is created despite whether the checkbox is
checked or not.
Capacity
If you check the checkbox, the maximum capacity available for the
creation is set.
Performance
If you check the checkbox, the maximum read/write performance is
set.
Number of Logical Enter the number of logical drives to be created.
Drives
Application Type
Select an application type suit to your purpose out of the following
types:
• File Server
• Video Stream
• Transaction Data
• Transaction Log
• Other
Each option sets the configuration (stripe size, write policy, etc.)
suitable for your purpose, however, if you want to do more detailed
settings, create an array and logical drive with Advanced
Configuration wizard. (See “3.6.3 Advanced Configuration”.)
Automatic Update Clicking the Update button allows the automatic update to be
reflected on the Logical Drives field below this field. If you check the
checkbox, the automatic update is automatically reflected on the
Logical Drives field only by changing the value of "Number of Logical
Drives."
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The following list shows the difference of the settings for each Application Type.
Type
File Server
Stripe Size
64KB
Read Policy
Read Ahead
Write Policy
Write Back
Video Stream
Transaction Data
Transaction Log
Other
1MB
Read Ahead
No Cache
Write Through
Write Through -
Write Back -
Write Back
64KB
64KB
64KB
Read Cache
Read Ahead
The following options are automatically set.
Disk Arrays
Number of Physical Drives
Physical Drive IDs
Total Configurable Capacity: Total capacity
configurable to logical drives
Number of Logical Drives: Set to the number of
logical drives specified for the Number of
Logical Drives option above.
3. Click [Submit].
Disk arrays and logical drives are automatically created.
3.6.3 Advanced Configuration
1. Click Disk Arrays in the Tree View.
2. Click the Create tab in the Management Window and select Advanced Configuration.
Set the items in the Create tab as shown in the table below.
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Advanced Configuration (Step 1 - Disk Array Creation)
Disk Array Alias
Alias (any name)
Enable Media Patrol
Enables media patrol. The checkbox is checked by default. For
details of media patrol, see "3.9 Media Patrol."
Enable PDM
Enables PDM. The checkbox is checked by default.
If an error occurred in any HDD in logical drive while the PDM
feature is being enabled, the data is copied onto the spare drive
automatically. Consequently, the slot location initially assigned
for a physical drive configuring logical drives may be changed.
Consideration must be taken into account to use the PDM
feature. For details of PDM, see "3.11 PDM."
Physical Drives
Select physical drives which you want to use to configure a disk
array and click the >> button to move them to the selection list.
Click [Next].
3. The screen for setting details of logical drives appears.
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Advanced Configuration (Step 2 - Logical Drive Creation)
Alias
Alias (any value)
RAID level
Indicates the available RAID level depending on the number of
physical drives selected in the previous screen.
RAID0 for a single physical drive
RAID0 or RAID1 for two physical drives
RAID0 or RAID5 for three physical drives
RAID0, RAID5 or RAID10 for four physical drives
Capacity
Specify the capacity of a logical drive to be created. The maximum
permissible capacity is shown to the right of [Max:].
Strip Block Size
Sector
Indicates the block size of a logical drive. The default is 64KB.
Indicates the sector size. The default is 512 bytes.
Set read policy.
Read Policy
Read Cache: Uses cache in reading.
Read Ahead: Uses cache in reading and further provides previous
reading. Previous reading before request can improve the system
performance (default).
No Cache: Does not use cache in reading.
Write Policy
Set write policy.
Write Through: Does not use cache in writing.
Write Back: Always uses cache in writing. It is expected that this
setting can improve writing performance.
However, in spite of the setting, the actual write cache state may
change depending on the write cache setting of the controller
(Adaptive Writeback Cache) and the battery state.
Initialization
Set whether logical drives are initialized just after they are created.
None: Does not initialize logical drives (default).
Quick: Initializes master boot sectors only.
Full: Initializes all logical drives.
In RAID0, only "None" or "Quick" is selectable.
4. After the selections, click [Update].
The logical drive is added and displayed graphically in Capacity Usage. If some capacity
remains in [Max:] of the Capacity field, clicking the Update button allows another logical drive
to be added. The above configuration can be unique to each logical drive.
5. After required logical drives are added completely, click [Next].
The summary appears.
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Advanced Configuration (Step 3 - Summary)
If no problems are found, click [Submit].
Disk arrays and logical drives are created.
3.6.4 Adding Logical Drives
If a disk array already created has empty capacity, logical drive can be added later.
1. Select a disk array to which you want to add logical drives and click the Create LD tab.
The logical drives already created are displayed graphically with the colors of their RAID
levels.
The following procedure is the same as the description of "Advanced Configuration (Step 2 -
Logical Drive Creation)" in "3.6.3 Advanced Configuration."
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3.7 Deleting Disk Array or Logical Drive
IMPORTANT: Delete neither disk arrays nor logical
drives saving Windows file systems. Before a disk array
or logical drive can be deleted, you must confirm that the
disk array or logical drive does not save any Windows
system file.
3.7.1 Deleting Disk Array
1. Click a disk array icon which you want to delete in the Tree View.
2. Click the Delete tab in the Management Window.
Check the checkbox of the logical drive to be deleted and click [Submit].
3. The confirmation dialog box appears. Type "confirm" and click [OK].
3.7.2 Deleting Logical Drive
Logical drives subordinate to a disk array can only be deleted.
1. Select a disk array that contains logical drive which you want to delete in the Tree View and
click the Delete LD tab.
Check the checkbox of the logical drive to be deleted and click [Submit].
2. The confirmation dialog box appears. Type "confirm" and click [OK].
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3.8 Redundancy Check
Routine redundancy check allows consistencies to be detected, checked and repaired to prevent
rebuild from failing at occurrence of a fault in an HDD. This is possible for logical drives of
RAID level 1, 10 or 5. The redundancy check can also repair bad sectors detected during
inconsistency check. To keep a RAID system operating stably, it is highly recommended to
provide routine redundancy check by using the scheduling feature.
The redundancy check is executable however system load may be and thus can be used in a
system environment where accessing to HDDs occurs frequently to always apply high load to
them.
IMPORTANT:
„ Redundancy check for a logical drive not full-
initialized or not subject to redundancy check in the
Auto Fix mode at all is forcibly set to the Auto Fix
mode.
„ Note that load is applied to the system to decrease its
processing rate during redundancy check.
To provide a logical drive with redundancy check, follow the procedure below.
1. Click the subsystem (ST EX4650EL) icon in the Tree View.
2. Click the downward arrow at the right end of the Background Activities tab in the
Management Window and then click Start Redundancy Check.
3. Make settings required for the redundancy check.
Redundant Logical
Drive
Select a logical drive to be subject to redundancy check from the
pull-down menu.
AutoFix
Set processing to be done when an inconsistency error is
detected.
If Auto Fix is checked, data in other HDDs configuring RAID is
repaired at detection of an inconsistency error.
If Auto Fix is not checked, any inconsistency error detected is not
repaired.
Pause On Error
Set whether the processing is paused when an inconsistency error
is detected.
If Pause On Error is checked, processing is paused at detection of
an inconsistency error. However, if Auto Fix is also checked,
processing is paused only when the error cannot be repaired.
If Pause On Error is not checked, the processing is not paused in
spite of detection of an inconsistency error.
4. Click [Submit].
The redundancy check is started.
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The progress of the redundancy check appears in the Background Activities tab. If you click the
link of the displayed task being advanced, the current progress status appears. On the screen,
you can pause or stop the task.
Click
You can see the Progress bar.
NOTES:
„ If you try to provide a logical drive not full-initialized
after its creation with redundancy check in the Auto
Fix mode for the first time, the following message is
registered. However, this does not have bad influences
on system processing.
Redundancy check is started on
unsyncronized logical drive (event
ID:1547).
„ After redundancy check is completed, be sure to see
the event log to check whether one or more errors
occur during the redundancy check. If a media error
occurred, a message indicating the occurrence appears
before the message showing that the redundancy
check is completed without any problem.
„ If rebuild is done for a logical drive at a time when
redundancy check of the logical drive is previously
scheduled, the redundancy check is skipped.
„ While redundancy check is run to a logical drive, a
time when another scheduled redundancy check is to
be run to the logical drive may come. If so, the
scheduled redundancy check is skipped.
„ If the power is off at a time when redundancy check is
scheduled previously, the scheduled redundancy check
is skipped.
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3.8.1 Scheduling Redundancy Check
To schedule routine redundancy check, follow the procedure below.
1. Click the subsystem (ST EX4650EL) icon in the Tree View.
2. Click the downward arrow at the right end of the Scheduler tab in the Management Window
and then click Add BGA Scheduler.
3. Set the following values and click [Next].
Scheduler Name
Select the Redundancy Check radio button. (In the above
screen, only the Redundancy Check option appears. However,
depending on the environment, the Media Patrol option may
appear.
Enable This Schedule
Recurrence Pattern
Check the checkbox.
daily: Redundancy check is done at the defined time everyday.
weekly: Redundancy check is done on the defined day of every
week.
monthly: Redundancy check is done on the defined date every
month.
4. Set the following values.
(The figure below appears when you select "weekly" as the Recurrence Pattern.)
- 40 -
(Do not provide setting for any option with "*unavailable." Failure to follow this instruction
may cause the system to operate improperly.)
Run Time - Start Time
Enter the start time. You can set the hour with the left
pull-down menu and the minute in five minutes with the right
pull-down menu.
Recurrence Pattern
The display screen varies depending on the Recurrence
Pattern selected in the previous screen.
[daily]
• [Every–days] (*unavailable)
[weekly]
• [Every–weeks] (*unavailable)
• Check the checkbox of the day of the week on which you
want to run redundancy check.
[monthly]
• [Day of Month] Set the date on which you want to run
redundancy check every month.
[The] (*unavailable)
• Check the checkbox of the month in which you want to run
redundancy check.
Range of Recurrence
Start from: Start date
End on–No End Date: Select this option.
–End After: (*unavailable)
–Until: (*unavailable)
Redundancy Check
Options
[Auto Fix] Set the processing to be performed when an
inconsistency error is detected.
If the checkbox is checked, data is repaired from other HDDs
configuring RAID at detection of an inconsistency error.
If the checkbox is not checked, a consistency error is not
repaired at detection of the error.
[Pause on Error] Set whether processing is paused if an
inconsistency error is detected.
If the checkbox is checked, processing is paused at detection
of an inconsistency error.
However, if Auto Fix is also checked, processing is paused
only when the error cannot be repaired.
If the checkbox is not checked, the processing is not paused
in spite of detection of an inconsistency error.
Note: Redundancy check without Auto Fix for a logical drive
not initialized or not subject to redundancy check in the Auto
Fix mode at all cannot be scheduled. If you try, the following
message is registered and the redundancy check is not done.
Failed to create the scheduler: Redundancy Check can not be
scheduled for logical drive x as it is not Fully initialized or
AutoFix is not enable
In this case, schedule the redundancy check in "Auto Fix."
- 41 -
Apply to Redundant
Logical Drives
Check the checkboxes of logical drives for which you want to
schedule redundancy check.
Do not use the options with “*unavavailable” suffixed in the above list.
5. After the settings are completed, click [Submit].
Click [Back] to return to the previous screen. Click [Cancel] to cancel the settings.
If redundancy check is scheduled, the screen display changes to the schedule list screen. The
scheduling just set is added to the list. Message "schedule was created successfully." appears at
the top of the tab.
The above procedure can make scheduling.
If the time reaches to the start time having been set, the redundancy check is started. The
redundancy check is repeated at the intervals entered in step 3.
IMPORTANT: Redundancy check without Auto Fix of a
logical drive not full-initialized or not subject to
redundancy check in the Auto Fix mode at all cannot be
scheduled.
If you try, the following message is registered and
redundancy check is not done.
Failed to create the scheduler: Redundancy
Check can not be scheduled for logical drive
x as it is not fully initialized or AutoFix
is not enabled.
In this case, run redundancy check in Auto Fix once.
Changing schedule setting
1. Click the subsystem (ST EX4650EL) icon in the Tree View.
2. Click the Scheduler tab in the Management Window and then click the link of the redundancy
check for which you want to change the schedule setting.
The following procedure is the same as that for creating a schedule.
Suspending (deleting) schedule setting
1. Click the subsystem (ST EX4650EL) icon in the Tree View.
2. Click the arrow at the right end of the Scheduler tab in the Management Window and then
- 42 -
click Delete Schedules.
3. Check the checkbox of the redundancy check which you want to delete and click [Submit].
The confirmation dialog box asking whether the redundancy check may be deleted appears.
Click [OK].
NOTE: You can set a single schedule of redundancy
check for a single logical drive.
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3.9 Media Patrol
The media patrol feature provides entire reading for the following target HDDs. Because of
aged deterioration, it may not be possible to detect faults of HDDs until they are accessed. The
media patrol, or routine read and check of data in HDDs, allows such faults to be detected as
soon as possible. Therefore, you can take proper measures early.
- HDDs configuring RAID
- Spare HDDs
If accessing to a HDD occurs during media patrol, the media patrol is paused until the
completion of the access. Accordingly, media patrol hardly degrades the system performance.
Because the media patrol feature checks HDDs in a period of low system load, it may not be
able to advance its processing in a system entered in high load status consistently. Therefore,
use the feature in system environment of comparatively low load such as in the night.
IMPORTANT:
„ Media patrol is scheduled by default to be run at 0:00
a.m. on Wednesday every week just after installation
of WebPAM PRO. Change the schedule to be suit to
the environment you use.
„ The RAID system does not allow media patrol to be
set in HDDs individually.
„ Media patrol is not done for HDDs having not been
used to configure a disk array or for HDDs not
specified as spare. Specify unconfigured HDDs to hot
spare.
„ Media patrol can detect media errors of HDDs early
and only repair HDDs being members of redundant
RAIDs. However, it does not check whether HDDs
are consistent with parity.
„ The feature can run media patrol of specified HDDs at
the specified time only once (scheduled media patrol
is run periodically every specified start time). Media
patrol is not run consistently.
Follow the procedure below to provide media patrol.
1. Click the subsystem (ST EX4650EL) icon in the Tree View.
2. Click the downward arrow at the right end of the Background Activities tab in the
Management Window and then click Start Media Patrol.
3. Click [Start].
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The media patrol is started.
The progress of the media patrol appears in the Background Activities tab. If you click the link
of the displayed task being advanced, the current progress status appears. On the screen, you can
pause or stop the task.
Click
You can see the Progress bar.
The following items appear in the screen indicating the progress of the media patrol.
Media Patrol Status
Indicates the status of media patrol.
Media Patrol Overall Progress
Indicates the progress of media patrol on all connected
HDDs.
Current Physical Drive ID
Indicates the ID of the physical drive being subject to media
patrol.
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Progress on Current Physical
Drive
Indicates the progress of the current media patrol on a
physical drive.
Number of Physical Drives
Completed
Indicates the number of physical drives on which media
patrol has already been completed.
Number of Physical Drives
Queued
Indicates the number of physical drives on which media
patrol is to be done.
Completed Physical Drives IDs Indicates the IDs of physical drives on which media patrol
has already been completed.
Queued Physical Drives IDs
Indicates the IDs of physical drives on which media patrol is
to be done.
NOTES:
„ During media patrol, "Yielded" may appear in the
Media Patrol Status field. The media patrol is set to
have the lowest running priority by default. If an
access occurs during media patrol, the media patrol is
paused until the completion of the access. "Yielded"
appears in such a situation.
„ After media patrol is completed, be sure to see the
event log to check whether one or more errors occur
during the media patrol. If a media error occurred, a
message indicating the occurrence appears before the
message showing that the media patrol is completed
without any problem.
„ While media patrol is run to a physical device, the
time scheduled to another media patrol of the physical
device may come. If so, the scheduled media patrol is
skipped.
„ If the power is off at the time when media patrol is
scheduled previously, the scheduled media patrol is
skipped.
3.9.1 Scheduling Media Patrol
NOTES:
„ Media patrol is scheduled by default to be run at 0:00
a.m. on Wednesday every week just after installation
of WebPAM PRO.
„ Media patrol is scheduled by default to be run at 0:00
a.m. on Wednesday every week just after installation
of WebPAM PRO.
„ You can set a single schedule of media patrol for a
single controller.
- 46 -
To add schedule setting of media patrol, follow the procedure below.
1. Click the subsystem (ST EX4650EL) icon in the Tree View.
2. Click the arrow at the right end of the Scheduler tab in the Management Window and then
click Add BGA Scheduler.
If media patrol is already set, Media Patrol does not appear in the Scheduler Name option.
3. Set the following values and click [Next].
Scheduler Name
Select the Media Patrol radio button.
Enable This Schedule
Recurrence Pattern
Check the checkbox.
daily: Media patrol is run at the defined time everyday.
weekly: Media patrol is run on the defined day of every week.
monthly: Media patrol is run on the defined date every month.
4. Set the following values.
(The figure below appears when you select "weekly" as the Recurrence Pattern.)
Run Time - Start Time
Enter the start time. You can set the hour with the left pull-down
menu and the minute in five minutes with the right pull-down
menu.
- 47 -
Recurrence Pattern
The display screen varies depending on the Recurrence
Pattern selected in the previous screen.
[daily]
• [Every–days] (*unavailable)
[weekly]
• [Every–weeks] (*unavailable)
• Check the checkbox of the day of the week on which you
want to run media patrol.
[monthly]
• [Day of Month] Set the date on which you want to run media
patrol every month.
[The] (*unavailable)
• Check the checkbox of the month in which you want to run
media patrol.
Range of Recurrence
Start from: Start date
End on–No End Date: Select this option.
–End After: (*unavailable)
–Until: (*unavailable)
5. After the settings are completed, click [Submit].
Click [Back] to return to the previous screen. Click [Cancel] to cancel the settings.
If media patrol is scheduled, the screen display changes to the schedule list screen. The
scheduling just set is added to the list. Message "schedule was created successfully." appears at
the top of the tab.
The above procedure can make scheduling.
If the time reaches to the start time having been set, the media patrol is started. The redundancy
check is repeated at the interval entered in step 3.
Changing schedule setting
1. Click the subsystem (ST EX4650EL) icon in the Tree View.
2. Click the Scheduler tab in the Management Window and then click the link of media patrol
for which you want to change schedule setting.
The following procedure is the same as that for creating a schedule.
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Suspending (deleting) schedule setting
1. Click the subsystem (ST EX4650EL) icon in the Tree View.
2. Click the arrow at the right end of the Scheduler tab in the Management Window and then
click Delete Schedules.
3. Check the checkbox of the media patrol which you want to delete and click [Submit].
The confirmation dialog box asking whether the media patrol may be deleted appears. Click
[OK].
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3.10 Rebuild
The rebuild feature can recover redundancy if a single HDD is defected in RAIL level 1, 10 or
5.
During rebuild, data read/write is enabled. However, the redundancy is lost until the rebuild
operation is completed.
If an HDD is defected, logical drives are entered into the critical state, of which you are notified.
IMPORTANT: Note that load is applied to the system to
decrease its processing rate during rebuild.
3.10.1 Hot Spare Rebuild
If a redundant logical drive is degraded, hot spare rebuild is done under where all the following
conditions match.
Spare drives are set.
Spare drives of either of the following types are required:
• Spare drives set to global
• Spare drives dedicated for logical drive entered into degraded
state
Spare drives have capacity set Spare drives should have capacities equal to or larger than
properly. those of defected physical drives.
When the above conditions are met, host spare rebuild is started automatically. (The physical
drives that is not configured to any disk arrays cannot be used as spare drives.)
3.10.2 Hot Swap Rebuild
Hot swap rebuild is done when the following conditions are met.
Auto Rebuild is enabled.
Enable Auto Rebuild should be checked in the Settings screen
appearing in the Background Activities tab of subsystem ST
EX4650EL. See the description of the Background Activities tab in
"3.5.1 Subsystem (ST EX4650EL) icon" for details.
A defected physical drive is
The new HDD should have a capacity equal to or larger than that
replaced with a new HDD on of the defected physical drive.
the same slot.
If the above conditions are met, hot swap rebuild is started automatically.
- 50 -
3.10.3 Manual Rebuild
For manual rebuild, follow the procedure below.
1. Click a degraded disk array in the Tree View.
2. Click the arrow at the right end of the Background Activities tab in the Management Window
and select Start Rebuild
3. Specify source and target HDDs on rebuild.
Source Physical Drive
Target Physical Drive
Specify a normal physical drive used to configure a logical
drive in the critical state.
Specify the target HDD on rebuild.
4. Click [Submit].
During the rebuild operation, the progress appears in the Background Activities tab.
As soon as the rebuild is completed, the status display of logical drives is returned to the normal
state.
NOTES:
„ After rebuild is completed, be sure to see the event log
to check whether one or more errors occur during the
rebuild. If a media error occurred, a message
indicating the occurrence appears before the message
showing that the rebuild is completed without any
problem.
„ To install a new HDD for replacement, wait for 90 sec
or longer after the removal of the defected HDD.
- 51 -
„ If Enable Buzzer is checked in controller setting, the
buzzer rings with the logical drive being in the critical
or offline state or rebuilt. To turn on/off the buzzer,
check or uncheck the checkbox of Enable Buzzer in
the Controller Settings tab. See the description of the
Buzzer tab in "3.5.2 Controller" for details. Buzzer
ringing is automatically stopped when the logical
drive is recovered to the normal state.
- 52 -
3.11 PDM
The PDM (Predictive Data Migration) feature always monitors HDDs configuring logical drives,
previously senses HDDs suspected to be defected and copies data in the HDDs to spare drives.
Different from the rebuild feature, PDM can be done without degrading of logical drives. After
the data copy, the status display of the source HDDs becomes Stale and they are recognized as
PFA error.
IMPORTANT:
„ Before the PDM feature can be used, the following
must previously be set.
- Enable PDM is checked in the Settings tab of disk
array. (See the description of the Settings tab in "3.5.7
Disk Array.")
- Spare drives have already been created (if the
automatic PDM feature is used).
„ If an error occurred in any HDD in logical drive while
the PDM feature is being enabled, the data is copied
onto the spare drive automatically. Consequently, the
slot location initially assigned for a physical drive
configuring logical drives may be changed.
Consideration must be taken into account to use the
PDM feature.
PDM is automatically run under any of the following conditions.
- An S.M.A.R.T. error occurs.
- The number of bad blocks exceeds the threshold (32).
- A fatal error occurs during media patrol.
PDM may also be run manually.
To start PDM manually, follow the procedure below:
1. Select a disk array for which you want to run PDM in the Tree View.
2. Click the arrow at the right end of the Background Activities tab and select Start PDM.
- 53 -
3. Specify the following.
Source Physical Drive
Target Physical Drive
Specify the physical drive which is suspected to be defected
and from which data is desired to be copied.
Specify a physical drive to which data is to be copied.
4. Click [Submit].
PDM is started. It may take much time depending on the capacity.
During the execution of PDM, you can check the progress.
5. When the processing is completed, the status display of source HDD becomes "Stale,PFA"
and the icon in the Tree View is marked with a red cross (×). It is recommended to replace the
HDD with a normal one.
- 54 -
- 55 -
3.12 Transition
At the occurrence of a fault, logical drives may be degraded and recovered by hot spare rebuild.
This results in separation of the configured slot positions of the logical drives. However,
creating spare drives of revertible type previously (see "3.15 Creating or Deleting Spare
Drives") allows logical drives to be returned to the original successive slot positions.
IMPORTANT: In the environment in which your system
is always subject to load, the process of transition may
take a long time and the performance may cause
performance decrement. In this case, the setting of
Revertible is recommended to be OFF when creating a
spare drive.
The transition is useful in the following situations.
<Example of auto transition>
1. Original state (RAID5)
Create spare drives of revertible type. (See "3.15 Creating or Deleting Spare Drives" for
details.)
Revertible
2. Occurrence of fault in PD2
A fault occurs in a physical drive among those configuring a disk array. The disk array is
entered into the degraded state (logical drives are entered into the critical state).
- 56 -
3. Hot spare rebuild is done by using PD4 to create a logical drive having PD1, PD3 and PD4 as
configured HDDs.
4. Replace the defected physical drive with a new physical drive having a capacity equal to or
larger than the capacity of the defected drive.
5. Transition is automatically started to move data from the spare drive to the new physical
drive.
6. When the transition is completed, the new physical drive becomes a member of the original
logical drive. The spare drive having saved the data temporarily returns to the original spare
drive.
- 57 -
<Example of manual transition>
1. Original state: RAID1
Create spare drives of revertible type. (See "3.15 Creating or Deleting Spare Drives" for
details.)
Revertible
2. Occurrence of a fault in PD2
A fault occurs in a physical drive among those configuring a disk array. The disk array is
entered into the degraded state (logical drives are entered into the critical state).
- 58 -
3. Hot spare rebuild is done by using PD4 to create a logical drive having PD1 and PD4 as
configured HDDs.
4. To make free physical drive PD3 be a configured HDD of the original logical drive, you can
select PD3 manually in this state to run transition.
(1) Click the arrow at the right end of the Background Activities tab and select Start Transition.
(2) Select the source and target physical drives as Source Physical Drive and Target Physical
Drive, respectively. Click [Submit].
During transition, the progress is displayed in the Background Activities tab.
At the completion of the processing, the spare drive is returned to the normal state.
- 59 -
NOTE: The “Operation Status” field may show
“Transition Running” although Transition has finished.
Check the messages regarding Transition in the
application log to find that the transition processing has
finished.
- 60 -
3.13 Transport
The transport feature is used to move a disk array in the online state with its normal status
remaining unchanged.
1. Click a disk array for which you want to provide transport in the Tree View and click the
Transport tab.
2. Click [Submit].
3. The confirmation dialog box appears. Type "confirm" and click [OK].
Input
“confirm”.
4. Make sure that Operational Status is set to "Offline, Transport Ready." Pull out the HDDs
configuring the disk array from the mating slots.
- 61 -
5. Insert the pull-out HDDs into slots in the environment subordinate to a new disk array
controller N8103-105 and refresh the HDDs. Then a normal disk array is recognized.
- 62 -
3.14 Initializing Logical Drive
A disk array can be initialized additionally after it is created.
Full initialization set all data bits in logical drives to zero. If logical drives are created, it is
recommended to run full initialization first.
IMPORTANT:
„ Initialization erases all data completely. Be sure to
back up important data before initialization.
„ You may select a logical drive which you want to
initialize from the disk array menu. However, take the
following procedure for initialization to prevent an
undesired logical drive from being initialized by
mistake.
1. Select a logical drive to which full initialization is to be done in the Tree View.
2. Click the arrow at the right end of the Background Activities tab in the Management Window
and select Start Initialization.
Quick Initialization
If the checkbox is checked, quick initialization is run. If not
checked, full initialization is run.
Quick Initialization: Initializes master boot sectors only.
Full Initialization: Initializes the logical drive fully to bring
consistency.
Quick Initialization Size
Enabled in quick initialization. Specifies the block size for
initialization.
Initialization Patterns in
Hex
Enabled in full initialization. Leave default 0 unchanged.
3. Click [Submit].
The confirmation dialog box appears. Type "confirm" and click [OK].
During initialization, the progress is displayed in the Background Activities tab.
- 63 -
3.15 Creating or Deleting Spare Drives
3.15.1 Creating Spare Drives
IMPORTANT: The following HDDs cannot be used for
spare drives.
- HDD that has been configured to any disk array
- HDD with partitions.
Spare drives are used to protect a redundant logical drive when hard disk drives in the logical
drive are defected. That is, if a hard disk drive in a redundant logical drive is defected, rebuild
can be done to a spare drive to substitute for the defected hard disk drive for protecting the
logical drive. Creating spare drives are required to use the PDM or transition feature.
Follow the procedure below to create spare drives.
1. Click Spare Drives in the Tree View.
2. Click the Create tab in the Management Window.
3. Set the following.
Spare Type
Global: Available to any disk arrays
Dedicated: Available only to specified disk arrays
Revertible
Check the checkbox if the transition feature is used (see "3.12
Transition").
Enable Media Patrol
Physical Drives
Check the checkbox.
Select HDDs to be specified as spare drives from HDDs in the
Available frame on the left side and click [>>]. The HDDs are
moved to the Selected frame on the right.
Dedicated Disk Arrays
Specify disk arrays if Dedicated is selected as the spare type.
- 64 -
4. Click the Update button.
The specified spare drives are added to the list of New Hot Spare Drives at the bottom.
5. Click [Submit].
The spare drives are defined. The created spare drives appear additionally in the Information
tab.
IMPORTANT:
„ The HDDs that are not configured to an logical drive
nor set as spare cannot be used as spare drives.
„ Media patrol is not done to the HDDs that are not
configured to array disk or set as spare. Specify
unconfigured disks as spare disks previously.
„ Set the capacity of dedicated spare to be the same as
that of the dedicated disk array.
- 65 -
3.15.2 Deleting Spare Drives
Follow the procedure below to delete spare drives.
1. Click Spare Drives in the Tree View.
2. Click the Delete tab in the Management Window.
Check the checkboxes of spare drives to be deleted and click [Submit].
The following popup appears. Confirm the information and click [OK].
The selected spare drives are deleted.
- 66 -
3.16 Expansion
IMPORTANT:
„ Before logical drives are provided with expansion, be
sure to back up the data in the disks. If an unexpected
error occurs during expansion, data in the disks may
be destroyed.
„ In this feature, only RAID5 configured with three
physical drives can be expanded to that configured
with four drives.
„ For expansion, all physical drives should have the
same capacity.
„ This feature can expand the capacity of the logical
drive. As seen from OS (Disk Management), the
capacity of the HDD looks become larger than before.
You can use this portion by newly creating a partition
in it. (The capacity of the existence logical drive is not
expanded.)
1. Click a disk array for which you want to provide expansion in the Tree View.
- 67 -
2. Click the arrow at the right end of the Background Activities tab in the Management Window
and select Start Migration.
3. Select physical drives used for the expansion.
Click [>>] to move the physical drives to the Selected frame.
Click [Next].
- 68 -
4. Set detailed information on the disk array.
RAID Level
RAID5 only
Expand Capacity
Check the checkbox to increase the capacity.
This item is grayed out if the disk array has no empty capacity.
To increase the capacity, specify the value.
Capacity
Click [Update]. The state resulting from expansion is displayed graphically in the Capacity
Usage.
Click [Next].
5. The summary of the expansion to be run appears.
Click [Submit].
- 69 -
6. The confirmation dialog box appears. Type "confirm" and click [OK].
The screen indicating the progress of the expansion appears.
Click
You can see the Progress bar.
- 70 -
3.17 Event
WebPAM PRO classifies every event occurred in a RAID system as an error, warning or
information to record it. This is effective to diagnose or solve faults occurred in the system.
IMPORTANT: The log times appearing on the WebPAM
PRO screen are later than the times at which the events
occur. See the application log of OS to check the event
occurrence times.
IMPORTANT:
„ The log times appearing on the WebPAM PRO screen
are later than the times at which the events occur. See
the application log of OS to check the event
occurrence times.
„ When you start WebPAM PRO first time, messages
with the date of 1970s may be registered. This has no
effect on WebPAM PRO operation.
Whether the Event Frame is displayed or not can be alternated by WebPAM PRO Header [Show
Event/Hide Event].
Up to 50 latest events are displayed.
Clicking [Save Events] allows events to be saved in a relevant file. Clicking [Delete Events]
causes all registered events to be deleted.
- 71 -
If an event occurs, such a popup as shown below appears at the upper right corner of the
WebPAM PRO screen.
NOTE: Sorting the events is unavailable.
- 72 -
3.18 Collecting Configuration Information
Controller and array configuration information can be saved in a text format by specifying
destination. The feature is intended for maintenance. Collect configuration information in the
procedure below if you are directed by a maintenance engineer.
1. Click the subsystem (ST EX4650EL) icon in the Tree View.
2. Click the Configuration tab in the Management Window.
3. Scroll the displayed list and click [Save Configuration] at the lower right corner.
The File Download dialog box appears. Save the file to a proper place.
IMPORTANT: In the Microsoft Windows 2000
environment, when you attempt to save the configuration
information, message "An error occurred in the page"
may appear. Even if it is the case, the configuration file
has successfully been saved. This error message can be
removed by clicking any place on Management Window.
- 73 -
Appendix A First Logon
Perform the following procedure to make settings for security:
1. The security alert dialog box appears.
Click [Examine Certificate…] to display the certificate.
2. The [Certificate Viewer] dialog box appears.
After confirming the description, click [Close].
3. To accept the certificate, click [Accept this certificate permanently] and click [OK].
To accept the certificate temporarily, click [Accept this certificate temporarily for this
session] and click [OK]. If you accept the certificate temporarily, the security alert
- 74 -
window will be displayed at next logon.
The setting for security is completed.
- 75 -
Appendix B Report Monitoring
To use Alert notification feature after installing NEC ESMPRO Manager, the following settings
are required. (This feature can be used only in the Windows environment.)
1. Untar the WebPAM PRO installation module.
Ex.) As the WebPAM PRO installation module is “WPPInst-1.00.tar.gz”:
# tar -zxvf WPPInst-1.00.tar.gz
2. Start "nec\Linux\WebPAMPR\WPMALERT\WPPMANEN.EXE" in the Windows
environment.
3. Click [Yes].
NOTE: If you click [No], the operation terminates
without setting.
4. Click [OK].
5. Reboot the system.
- 76 -
Alert report messages and actions
After the installation of WebPAM PRO, the following messages registered with the name
"Promise Event Logger" are set as reported sources. To change the setting, redefine it by using
the report setting feature of the NEC ESMPRO Agent.
Event
ID
Message
Action
No action required if the ID 517 message has not been
registered within 8 hours. If there is no ID 517 message,
the battery is required to be replaced.
Battery temperature is above
the threshold
512
This is for checking the ID 512 message.
517
526
Battery is charging
Failure detected in battery. Check the battery and its life
duration and replace it if any failure exists or it has little
time left to live.
Battery is not accessible
The write policy of writeback Check the battery if any failure exists.
logical drive switched from
writeback to writethru
The write policy of writeback Check the battery if any failure exists.
logical drive switched from
529
530
writethru to writeback
An array became offline. Please replace the failed HDD
and contact the customer or sales engineer for
reconstruction..
Logical drive initialization marks the
logical drive offline
4101
Logical Drive Initialization is Check HDD and cables and replace it if any failure exists.
aborted due to an internal
error
4102
4108
4109
An array became offline. Please replace the failed HDD
and contact your customer engineer for reconstruction..
Quick Logical drive initialization
marks the logical drive offline
Quick
Logical
Drive Check HDD and cables and replace it if any failure exists.
Initialization is aborted due to
an internal error
An array became offline. Please replace the failed HDD
and contact the customer or sales engineer for
reconstruction.
Physical drive became critical. Please replace the failed
HDD and execute rebuilding. If array has hot-spare drive,
rebuilding will be executed automatically.
Logical drive has been placed offline.
Possible Data Loss
4611
4612
Logical drive has been set to critical
Media Patrol is aborted due to Check HDD and cables and replace it if any failure exists.
an internal error
5638
6658
6659
6667
Replace the failed HDD.
Physical Disk is marked as DEAD
Check HDD and cables and replace it if any failure exists.
Physical Disk has been reset
Physical Disk has been Physical driver has been removed. Check HDD and cables
removed
and replace it if any failure exists.
Bad sector is found on Replace the HDD with bad sectors.
physical disk
6671
6675
6677
6682
6683
Previously configured disk is no
longer found
Replace the failed HDD.
Replace the failed HDD.
Replace the failed HDD.
Replace the failed HDD.
A physical disk has encountered PFA
condition
Physical Disk is marked as DEAD
due to removal
Physical Disk is marked as DEAD
due to the failure of Reassign
- 77 -
Event
ID
Message
Action
Physical Disk is marked as DEAD
due to PFA condition of the disk
Replace the failed HDD.
6684
6685
Physical Disk is marked as DEAD
due to forced offline state
Replace the failed HDD.
RAID
migration
has Physical disk error detected. If it cannot be fixed, replace
6149
6150
encountered a physical disk the HDD.
error
RAID
encountered a physical disk for reconstruction of the array.
error
migration
has Migration aborted. Please contact the sales representative
Array was made Incomplete An error occurs during Migration. Please contact the sales
due to missing NV Watermark representative for reconstruction of the array.
6154
7681
7682
7683
7684
7687
7689
7696
7697
1542
Rebuild is completed. Check the status of the logical drive.
Rebuild is completed
Rebuild is stopped. Restart rebuilding as soon as possible.
Rebuild is paused
No specific action required.
Rebuild is resumed
Rebuild is stopped. Restart rebuilding as soon as possible.
Rebuild is stopped
Rebuild is aborted due to an Rebuilding aborted. Please contact the sales representative.
internal error
No specific action required.
Rebuild is queued
The capacity of unconfigured physical drive is not capable
Auto rebuild can not start
of rebuild. Replace a drive with proper capacity.
Rebuilding aborted. Please contact the sales representative.
Rebuild stopped internally
Redundancy check is aborted Check HDD and cables and replace it if any failure exists.
due to an internal error
Redundancy
encountered
block(s)
check If any error occurs in HDD, replace that HDD. If no error
inconsistent occurs in HDDs, back up the system data and replace all
the HDDs.
1543
Redundancy check task is Check HDD and cables and replace it if any failure exists.
stopped internally
1546
8192
Replace the failed HDD.
SMART error is received
The above table shows the event IDs in decimal. The events listed in the table are reported to
NEC ESMPRO Manager. The symbols such as %1 in messages are padding characters.
- 78 -
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