ProSATA™ SS8
ULTRA 320 SCSI to SATA
Disk Subsystem
User Manual
Revised February 19, 2007
Phone: Toll Free 866.744.8722 Main 316.744.8722 • Fax: 316.744.1398 * [email protected] * [email protected] * www.wiebetech.com
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Table of Contents
Chapter 1 Product Overview .......................................................... 5
1.1
1.2
Features........................................................................... 5
Specifications................................................................... 6
Chapter 2 Environment Setup........................................................ 7
2.1
2.2
2.3
2.4
Before installation ............................................................ 7
Product overview ............................................................. 8
Install SATA disks............................................................ 8
Connect cables ................................................................ 9
Chapter 3 GUI Connection
10
3.1
3.2
3.3
3.4
GUI – http....................................................................... 10
RS-232 serial port.......................................................... 10
Remote control – secure shell ....................................... 10
LCM ............................................................................... 11
Chapter 4 GUI operation ............................................................... 12
4.1
4.2
4.3
4.4
ProSATA SS8 Menu ...................................................... 12
Login .............................................................................. 13
Quick install.................................................................... 14
System config ................................................................ 15
IP address................................................................ 16
Password................................................................. 16
Date ......................................................................... 16
Mail .......................................................................... 17
SNMP ...................................................................... 17
Event log.................................................................. 18
Volume config ................................................................ 18
Physical disk............................................................ 19
Volume group .......................................................... 21
User data group....................................................... 22
Cache volume.......................................................... 24
Logical unit............................................................... 25
Enclosure management................................................. 26
SAF-TE config ......................................................... 26
Voltage & Temperature............................................ 26
SMART .................................................................... 27
4.4.1
4.4.2
4.4.3
4.4.4
4.4.5
4.4.6
4.5
4.6
4.5.1
4.5.2
4.5.3
4.5.4
4.5.5
4.6.1
4.6.2
4.6.3
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4.7
Maintenance .................................................................. 27
Upgrade................................................................... 28
Info........................................................................... 28
Shutdown................................................................. 29
Logout............................................................................ 29
4.7.1
4.7.2
4.7.3
4.8
Chapter 5 Advanced operation .................................................... 30
5.1
5.2
5.3
Create volume group ..................................................... 30
Create user data volume................................................ 31
Attach and detach Bus ID, SCSI ID, and LUN ............... 32
Attach LUN to UDV.................................................. 32
Detach Bus ID, SCSI ID and LUN from UDV........... 33
Create dedicated cache................................................. 34
Set global spare and dedicated spare disks .................. 35
Migration / Expansion .................................................... 36
38
5.3.1
5.3.2
5.4
5.5
5.6
Appendix
A
B
C
Frequently Asked Questions (FAQ) ............................... 38
RAID Explained.............................................................. 39
Glossary......................................................................... 40
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Chapter 1 Product Overview
1.1 Features
ProSATA SS8 Subsystem is a high-performance RAID subsystem with the
features listed below:
•
•
•
•
•
Single channel performance is over 240MB/sec
SATA II drive interface (Backward-compatible)
Configurable N-way mirror for high data protection
On-line volume expansion with no system down-time
Extensible APIs for host server integration
When properly configured, ProSATA SS8 provides non-stop data storage
service with a high degree of fault tolerance through the use of RAID technology
and advanced array management features.
ProSATA SS8 connects to the host system through an U320 SCSI interface for
optimized performance in speed. It can be configured to any RAID level to
provide the most reliable data protection and fastest data transfer rates as
required by user applications.
ProSATA SS8 is designed with a new level of polynomial technology to
implement the RAID 6 function. RAID 6 arrays allow up to two simultaneous HDD
failures without impact on the existing data, making the ProSATA SS8 the most
reliable RAID system.
ProSATA SS8 offers array migration and expansion technology to give users the
flexibility to change RAID levels and increase array capacity for increased
performance or data security to meet the changing demands of applications.
ProSATA SS8 is the most cost-effective disk array subsystem with completely
integrated high-performance and data-protection capabilities that meet or exceed
the highest industry standards.
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1.2 Technical Specifications
ProSATA (SS8)
Product Name/Code
Supported RAID
Levels
RAID 0, 1, 0+1, 3, 5, 6 & JBOD
Ultra320 SCSI
Host Interface
Drive Compatibility
RAID Processor
Memory
SATA1 and SATA2 hard disk drives
Intel IOP80331 500MHz 64-bit RISC Processor
512MB DDR333 DIMM
Web browser & SNMP
RAID Management
Remote
Management
OS Independent &
Transparent
Via Ethernet Port
Yes
Separate key lock for each HDD
Security
Drive failure indicator for each drive
Drive access indicators for each drive
Built-in heat and fan sensor with mutable alarm
LED Indicators
Thermal Monitoring
Cooling Fan
1 x 8cm Hot-Swappable fan
Input Range: 100 to 240 VAC. 10%
Voltage: +5V/25A +12V/10A 47-63Hz
Agency Approval: EMI/RFI, CE, FCC B, BSMI
Safety: UL, CUL, CB, TUV, CCC
Power Supply
(300W)
Operating
10°C ~ 35°C (50°F ~ 95°F)
10°C ~ 50°C
Temperature
Non-operating
Temperature
Operating Humidity
5% to 95% noncondensing
Windows 98, NT, 2000, Millennium, XP, 2003
Mac 9.1 and above, including OSX, OSX Server, XSERVE
Linux (all latest builds) which support SCSI.
32 pounds = 14.51kg (with drives)
Supported Operating
Systems
Shipping Weight
Dimensions
12" x 6" x 17.5" (H x W x D)
FCC, CE
Certification
3-year limited warranty with advance replacement within first 90
days after purchase. See warranty statement for details and
limitations. 90 days of free phone support. For support by email,
Warranty
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Chapter 2 Environment Setup
2.1 Before installation
Requirement:
Prepare a host system with a SCSI HBA card. For optimized performance, a
SCSI Ultra 320 HBA is recommended. The host system should have one free
ethernet or COM port to be used for the initial setup. The management and
configuration web GUI can be accessed remotely after proper setup.
Package contents
Check the accessories packaged with your ProSATA.
Please contact
WiebeTech if any items are missing or damaged. The box should contain:
ProSATA SS8 unit
1
Removable drive trays (inside unit)
Ultra320 SCSI terminator
Power cord
8
1
1
1
Key
Hard drive screws
32
User Manual and Warranty Statement
(on CD)
• Before starting any type of hardware installation, please ensure that all
power switches have been turned off and all power cords have
been disconnected to prevent personal injury and damage to the
hardware.
• To avoid overheating, ProSATA SS8 should be operated in a well-
ventilated area and in such a way that sufficient airflow is
maintained across the controller chips.
• Static electricity can damage electronic components. To guard against
such damage:
1. Work in a static-free environment
2. Wear a grounded anti-static wrist strap
3. Store uninstalled components in anti-static bags
4. Handle PCBs by their edges and avoid touching chips and
connectors.
• Environmental requirements:
Temperature: 10°C to 35°C (50°F to 95°F)
Humidity: 5% to 95%, non-condensing
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2.2 Product overview
Front view
Rear view
Power LED
Access LED
Voltage Switch
Power Switch
RS-232 Port
SCSI to Host
Terminator
Ethernet Port
Power Input
Figure 2.2.2
Figure 2.2.1
2.3 Install SATA disks
If the hard drives do not come with the RAID system, please follow the
instructions for installation below.
•
•
Press the release button and pull the handle to remove the disk tray. The
trays may have to be unlocked first using the key provided.
Insert the disk into the disk tray with the connectors directed toward the
open rear of the tray.
•
•
Align the mounting holes of the disk with the tray.
Mount the disk to the disk tray with the screws provided in the accessory
pack.
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•
•
Slide the disk tray back into the empty slot of the chassis and make sure
the handle clicks into place.
Lock the tray with key provided to ensure disk security.
Key Lock
Power LED
Access LED
Release
Figure 2.3.1
2.4 Connect cables
Please see Figure 2.2.2 as reference for cable connections.
•
•
Connect power cord.
Connect SCSI Ultra 320 cable and SCSI Ultra 320 terminator. The
ProSATA SS8 controller does not have a terminator on board and will
need an external terminator to properly work.
•
•
Connect console cable to the host server (RS-232).
Connect LAN cable to your existing network setup (hub or switch), or
connect console cable (RS-232) to the host server.
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Chapter 3 GUI Connection
3.1 GUI – http
ProSATA SS8 supports graphic user interface (GUI) to manage the system by any web
browser. Be sure to connect LAN cable to the network. The ProSATA will automatically
obtain an IP address if connected to a network that has DHCP support. Check the
ProSATA’s LCD for this address (found on the bottom side of the unit). The GUI can be
accessed by typing the IP address in the browser URL address bar, as follows:
If DHCP is not available on your network then manual configuration will be required. If
connecting directly from the ProSATA to your computer then you will need a cross-over
cable. You'll then need to set the IP of the ProSATA to something similar to the IP
address of your computer: YYY.YYY.YYY.XXX (Ys being the same numbers as your
computer's IP). More info on manually setting an IP address is found in section 4.4.1.
Upon clicking on any function for the first time, a dialog window will pop up to
authenticate login name and password.
Login name: admin
Default password: 1234
3.2 RS-232 serial port
Use RS-232 serial cable to connect console port.
Default baud rate: 115200, 8 bits, 1 stop bit, and no parity.
Terminal type: vt100
Login name: admin
Default password: 1234
3.3 Remote control – secure shell
SSH (secure shell) is required for ProSATA SS8 to remote login. The SSH client
software is available at the following web site:
SSHWinClient: http://www.ssh.com
Host name: 192.168.0.200
Login name: admin
Default password: 1234
Note
Using ssh, the IP address has to be setup and the password is
required for login.
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3.4 LCM (LCD Control Module)
The LCM is found on the bottom side of the ProSATA. It has four buttons for
controlling functions: c(up), d(down), ENT (Enter), and ESC (Escape).
c and d are pressed to scroll through the functions and options.
ENT is pressed to enter functions and to accept selections.
ESC is used to exit to previous menu. Holding ESC will jump back to main menu.
After the system boots up, the following screen will be shown on the LCM:
WiebeTech
(IP address)
↵
There are 6 functions accessible by the LCM: Alarm Mute, Reset/Shutdown,
Quick Install, View IP Setting, Change IP Config, and Reset to Default.
Alarm Mute
Select Alarm Mute to mute the alarm.
Reset/Shutdown
Select Reset to restart the controller without powering
down.
Select Shutdown to prepare controller for shutdown prior
to powering off.
Before powering off system, it is recommended to do
Shutdown from the controller to clear the data from
cache.
Quick Install
Select Quick Install to setup a RAID array from the
available drives. Please see Appendix for RAID level
definitions and minimum requirements for each RAID
level.
View IP Setting
Change IP Config
Reset to Default
Select View IP Setting to display current IP address, IP
subnet mask, and IP Gateway.
Select Change IP Config to modify IP address, IP subnet
mask, and IP Gateway.
Select Reset to Default to reset to original manufacture
settings. The login and password will return to default:
admin:1234, and the IP address to default: 192.168.0.1
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Chapter 4 GUI operation
4.1 ProSATA SS8 Menu
Quick install
Step 1 / Step 2 / Step 3 / Confirm
IP address
Password
Date
Mail
SNMP
DHCP / Static
Administrative password change
Date and time setting
Email alert setting
SNMP alert setting
View event log
Event log
Physical disk
Volume group
Free disc / Global spares / Dedicated spares / Details
Create / Delete / Details / Rename / Migrate
User data volume Create / Delete / Attach LUN / Details / rename /
On/Off Line / Set read/write mode / Set priority
Cache Volume
Logical unit
Create / Delete / Details / Resize
Attach / Detach
SAF-TE config
Voltage &
SAF-TE enable/disable
View current voltage and temperature of system
Temperature
SMART
View SMART disk monitor
Upgrade
Info
Shutdown
Remote upgrade firmware
Current system firmware version
Reboot / Shutdown
Logout
Logout of system menu
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4.2 Login
ProSATA SS8 supports graphic user interface (GUI) to operate and monitor the
system via any web browser. Be sure to connect LAN cable. The default IP for
the system is 192.168.0.200, but if the ProSATA has been connected to a
network with DHCP, this address will have been changed automatically. Open
the browser and type:
Clicking on any function for the first time, a dialog window will pop up to
authenticate login name and password.
Login name: admin
Default password: 1234
Please check section 4.4.1 for changing IP address.
After login, the selections listed can be accessed.
Figure 4.2.1
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4.3 Quick install
Use the Quick install function to create a volume easily.
Step 1: Select Quick install then choose the RAID Level desired. After
choosing the RAID level, click
. It will take you to step 2 for Bus ID,
SCSI ID, and LUN setup.
Step 2: In this step, the volume can be customized as needed. Volume size, Bus
ID, SCSI ID, and LUN can be assigned specified numbers to be attributed to the
volume. The maximum volume size is shown as default. The volume can only be
less or equal to the number shown. By default, the Bus ID, SCSI ID, and LUN are
set at 0. These numbers can be changed by the pull down menu. Click
after desired volume size and IDs are set.
Note
Other UDVs can be created by Quick Install. The remaining capacity
from the Volume Group will be shown and the controller will determine
the next ID settings to avoid conflicts with other UDVs.
Step 3: Confirm page. Click
if all settings are correct.
Done: A summary page with the User data volume will be shown as Figure 4.3.1.
Figure 4.3.1
(Figure 4.3.1: A RAID 0 user data volume with the UDV name “QUICK14183”, named by the
system itself, with the total available volume size 227840MB, or roughly 230GB.)
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4.4 System config
System config selection is for the setting of IP address, Password, Date,
Mail, SNMP and for viewing Event log.
Figure 4.4.1
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4.4.1 IP address
Enter IP address to change IP setting. There are 2 selections, DHCP (Get IP
address from DHCP server) or static IP. Manually enter the IP address if setting
is on Static.
Figure 4.4.1.1
4.4.2 Password
Enter Password to change administrator password.
Figure 4.4.2.1
4.4.3 Date
Enter Date to set up the current date & time before using.
Figure 4.4.3.1
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4.4.4 Mail
Enter Mail to set up to 3 email addresses for receiving event notification. Some
mail servers would check “Mail-from address” and need authentication for anti-
spam. Please fill the necessary fields. Check “Send test mail” to send test emails
to the specified email addresses.
Figure 4.4.4.1
4.4.5 SNMP
Enter SNMP to enter up to three SNMP trap for alert via SNMP.
Figure 4.4.5.1
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4.4.6 Event log
Enter Event log to view the event messages.
Figure 4.4.6.1
4.5 Volume config
Volume config is for the management and display of volume configurations.
Functions include Physical disk, Volume group, User data volume, Cache
volume, and Logical unit.
Figure 4.5.1
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4.5.1 Physical disk
Enter Physical disk to view the status of hard disks installed in the system.
Figure 4.5.1.1
(Figure 4.5.2: Physical disks 2 and 3 have been used for a VG named “R0”. Physical disks
1, 5, 6 are free disks. Disk 4 has been set as a global spare disk.)
• PD column description:
The actual location of hard disks in relation to the
Slot
controller. Click
next to the slot number to display
the details of the hard disk.
World Wide Name. It is created automatically when
new hard disk is installed. WWN is a unique identifier
for Fibre Channel storage network.
WWN
Capacity of hard disk.
Size (MB)
VG Name
Status
Related volume group name.
The status of hard disk.
Æ The hard disk is good.
Æ The hard disk has failed.
Status 1
Æ RAID Disk. This hard disk has been set as a
member of a RAID array, or a Volume Group.
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Æ FRee disk. This hard disk is free for use.
Æ Dedicated Spare. This hard disk has been set
to be a dedicated spare for a specific VG.
Æ Global Spare. This hard disk has been set to
be a global spare for all VGs.
Æ ReServe. This disk was part of a VG and
contains information from the VG. The
reserved status may be caused by removal
of drive while system was running. In
reserved status, this disk can only be used
to rebuild the VG. It can not be used as a
member disk of a new VG. To make this disk
usable, perform a Free Disc by manually
selecting the disk and click
.
Status 2
R Æ Recover. The disk is recovering.
MÆ Migration. The disk is migrating.
• PD operations description:
Set the selected hard disk(s) to be free for use.
FREE DISC
Set the selected hard disk(s) to be global
spares of all VGs.
GLOBAL SPARES
DEDICATED SPARES
Set the selected hard disk(s) to be dedicated
spares of selected VGs.
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4.5.2 Volume group
Enter Volume group to view the status of each volume group.
Figure 4.5.2.1
(Figure 4.5.2.1: RAID 0 setup, with 4 physical disks, named “VG-R0”, total size is 227GB.
One associated UDV of 100GB has been created, so free space is 127GB. VG status is
online.)
• VG column description:
No.
Volume group number. Click
No. to display details of this VG.
next to the Volume
next to the Name to
Name
Volume group name. Click
change the name of this VG.
Total capacity of this volume group.
Total(MB)
Free(MB)
#PD
Remaining free capacity of this volume group.
The number of physical disks which the volume group
is using.
The number of user data volumes related to this
volume group.
#UDV
Status
The status of volume group.
Æ volume group is online.
Æ volume group has failed.
Status 1
Status 2
Æ Degrade mode. This volume group is not
complete due to a missing drive or failed
drive.
R Æ Recover. This volume group is in the process of
rebuilding.
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M Æ Migration. This volume group is in the process of
Status 3
RAID
migration.
The RAID level which this volume group is using. The
button next to the RAID level is the Migration
function. Click
to add disk(s) to perform expansion
or change the RAID level of the Volume group.
•
VG operations description:
Create a volume group
CREATE
Delete this volume group
DELETE
4.5.3 User data group
Enter “User data volume” function to view the status of each user data volume.
Figure 4.5.3.1
(Figure 4.5.3.1: UDV created under name of “UDV-R0”, related to “VG-R0”, size is 100GB,
status is online, write back, high priority, with cache volume of 107MB.)
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• UDV column description:
No.
Number of this user data volume. Click
below the
UDV No. to shows the details of this User data volume.
Name
Name of this user data volume. Click
UDV Name to change the name this UDV.
below the
to bring
Total capacity of this user data volume.
Size(MB)
Status
The status of this user data volume. Click
this UDV ON or OFF line.
Æ user data volume is online.
Æ user data volume is offline.
Æ user data volume has failed.
Status 1
Æ Write Through.
Æ Write Back.
Æ Read Only.
Click
below the status to change the cache write
policy.
Status 2
Æ High priority.
Æ Mid priority.
Æ Low priority.
Click
below the status to change the priority.
I Æ user data volume is initializing.
R Æ user data volume is recovering.
Status 3
Status 4
M Æ user data volume is in the process of migration.
R% Æ percentage complete for initializing or
recovering.
The RAID level that user data volume is using.
RAID
#LUN
The number of LUNs that this user data volume is
attached to.
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The VG name that this user data volume belongs to.
The cache volume that user data volume is using.
VG name
CV (MB)
• UDV operations description:
Attach to a Bus ID, SCSI ID and LUN.
ATTACH LUN
Create a user data volume function.
Delete this user data volume function.
CREATE
DELETE
4.5.4 Cache volume
Enter Cache volume function to view the status of cache volume.
The global cache volume is a default cache volume automatically created after
system is powered on. This number can not be deleted or changed. The size of
global cache is base on the RAM size. If 256MB RAM is installed, there will be
107MB left for cache volume after memory allocation for system.
Figure 4.5.4.1
• CV column description:
No.
Number of this Cache volume. Click
next to the
CV No. to display the details of the cache volume.
Size(MB)
Total capacity of this cache volume Click
the CV size to resize the CV. The CV size can be
adjusted as needed.
next to
Name of the UDV.
UDV Name
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• CV operations description:
Create a cache volume function.
CREATE
Delete this cache volume function.
DELETE
4.5.5 Logical unit
Enter Logical unit function to view the status of attached logical unit of each
UDV.
Figure 4.5.5.1
• LUN operations description:
ATTACH
Attach a Bus ID, SCSI ID, and LUN to a user data
volume.
DETACH
Detach a Bus ID, SCSI ID, and LUN from a user data
volume.
Note
Note which channel the SCSI cable is connected to. The SCSI ID of
the UDV must correspond to the SCSI channel and cable setup.
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4.6 Enclosure management
Enclosure management function allows monitoring of enclosure and drive
information including SAF-TE config, Voltage and Temperature, and Smart
functions.
Figure 4.6.1
4.6.1 SAF-TE config
Enter SAF-TE config function to enable or disable the management of SAF-TE
from buses.
Figure 4.6.1.1
4.6.2 Voltage & Temperature
Enter Voltage & Temperature function to view the information of current
voltage & Temperature.
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Figure 4.6.2.1
4.6.3 SMART
Enter SMART function to view SMART (Self-monitoring analysis & reporting
technology) for physical disks health information.
Figure 4.6.3.1
4.7 Maintenance
Maintenance function allows operation of the system functions including
Upgrade of the latest firmware, Info to show the system version and
Shutdown to either reboot or shutdown the system.
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Figure 4.7.1
4.7.1 Upgrade
Enter Upgrade function to upgrade firmware. Please contact our tech support to
receive the latest firmware. Once the firmware has been downloaded and saved
to a designated location, press
to select the file from the saved location.
Click
to start upgrade automatically. After upgrading finishes, reboot
the system.
Figure 4.7.1.1
Note
Please contact us for the latest Firmware
4.7.2 Info
Enter Info function to display current system firmware version.
Figure 4.7.2.1
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4.7.3 Shutdown
Enter Shutdown function to do a shutdown or reboot. Before powering off
system, it is recommended to perform a system SHUTDOWN to allow the data
from cache to be written to hard disks.
Figure 4.7.3.1
4.8 Logout
For security reason, Logout function will allow users to logout of GUI. Login
name and password must be entered to get access again.
Figure 4.8.1
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Chapter 5 Advanced operations
5.1 Create volume group
To create the volume group, please follow these procedures:
Figure 5.1.1
1. Enter Volume config.
2. Enter Volume group.
3. Click
.
4. Enter a VG Name, choose a RAID level from the pull down menu,
press
to choose the PD slot(s) that will be members of this
.
VG, then press
5. Check the setting. Press
if all settings are correct.
6. Done. A summary page will be created to show the new VG.
Figure 5.1.2
(Figure 5.1.2: Setup of RAID 0 with 2 physical disks, named “VG-R0”. The total size is
306GB. Because no related UDV has been created yet, free size is still 306GB.
VG status is online.)
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5.2 Create user data volume
To create a user data volume (UDV), please follow these procedures.
Figure 5.2.1
1. Enter Volume config.
2. Enter User data volume.
3. Click
.
4. Enter a name for this UDV. Select which VG this UDV will be created
from. Select the CV no. if a dedicated CV has been created (Global CV
will be used as default). Set the capacity to be used for the UDV. Set
the desired stripe height, block size, on/off line status, read/write mode
and priority. Click
set correctly.
after making sure all configurations are
5. Done. A summary page will be created to show the new UDV.
Note
If a dedicated cache volume is needed for UDVs, the cache volume
will have to be created prior the UDV setup. More detail is in section
5.4
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Figure 5.2.2
(Figure 5.2.2: Setup of a UDV named “UDV-R0”, created from “VG-R0”. The size is 100GB,
status is online, write back, high priority with cache volume 107MB.)
Note
VG & UDV can be deleted by simply checking the one you want to
delete then clicking
.
5.3 Attach and detach Bus ID, SCSI ID, and LUN
This section will describe how to attach and detach Bus ID, SCSI ID, and LUN.
5.3.1 Attach LUN to UDV
There are 2 methods to attach Bus ID, SCSI ID, and LUN to UDVs.
1. Enter Volume config, then User data volume. Click
to
to enter
enter setup page.
2. Enter Volume config, then Logical unit. Click
setup page.
Figure 5.3.1.1
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1. Select which UDV to attach.
2. Choose Bus ID, SCSI ID and LUN to attach, and then click
3. Done.
.
Note
Note which channel the SCSI cable is connected to. The SCSI ID of
the UDV must correspond to the SCSI channel and cable setup.
5.3.2 Detach Bus ID, SCSI ID and LUN from UDV
To detach IDs and LUN from the UDV, please follow the procedures below.
Figure 5.3.2.1
1. Enter Volume config.
2. Enter Logical unit.
3. Select the UDV by checking the square for the appropriate UDV.
Click
.
4. A dialog window will pop up for confirmation. Choose
5. Done.
.
Note
If you delete a UDV with attached IDs and LUN from the user data volume
page, it will detach the IDs and LUN automatically.
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5.4 Create dedicated cache
Each UDV will be associated with one specific cache volume (CV) to execute the
data transaction, whether it’s a global CV or a dedicated CV. Each CV can be
assigned a different size. Unless specified, each UDV will use the default global
cache volume. A dedicated cache volume must be created prior to setting up an
UDV with the dedicated cache.
The total cache size will depend on the size of the RAM installed. By default, the
total cache size is set to global cache. To create a dedicated cache volume, the
desired CV size must first be determined then subtracted from the global cache.
Resize the global cache by subtracting the amount needed for the CV. Finally
create a new CV by setting the remainder cache to the new CV.
Figure 5.4.1
1. Enter Volume config.
2. Enter Cache volume.
3. If no more free space remaining for creating a new dedicated cache
volume, cut down the global cache size first by clicking
in the size
column. After resizing, click
page.
to return to cache volume
4. Click
to enter the setup page.
5. Fill in the desired size and click
6. Done.
.
Note
The minimum global cache volume size should be no less than
40MB. The minimum dedicated cache volume size should be no less
than 20MB.
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5.5 Set global spare and dedicated spare disks
Spare disks are used to provide an added layer of protection in case a member
disk of a VG fails. The system will automatically switch a spare disk in place of a
failed disk and start a rebuild. Global spares will be reserved to serve all VGs,
while Dedicated spares will serve only the VG it is assigned to.
Figure 5.7.1
(Figure 5.7.1: Physical disk of slot 4 has been set as global spare disk. Physical disk of
slot 5 has been set as dedicated spare for VG named “VG-R5”.)
1. Enter Volume config.
2. Enter Physical disk.
3. Select the free disk(s) by checking the square for the disk, then
click
to set as global spares.
Or
Select a VG from the upper left pull down menu. Select the free disk(s)
by checking the square for the disk, then click
as dedicated spare for the selected VG.
to set
Note
The upper left box will not be present if no VG have been created or
if the existing VGs are RAID 0 or JBOD. These RAID level will not be
able to take advantage of the added protections from spare disks.
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5.6 Migration / Expansion
Migration and expansion allows users to change RAID levels to improve
performance and reliablity, and to add drives to increase capaciy. For migration
and expansion, the total size of new array must be larger or equal to the original
array. To perform an expansion, migrate to the same RAID level of the original
VG with added drives.
Figure 5.6.1
1. Enter Volume config.
2. Enter Volume group.
3. Select which VG to perform migration / expansion by clicking
RAID column next the RAID level.
in the
4. Change the RAID level by selecting from the pull down menu
. A warning window will pop up if the current
available disks are not enough to support the new RAID level. Click
to increase or change hard disks to be included in the new
RAID array, then click
.
5. Check the setting of RAID level and RAID PD slots and click
.
6. A confirmation page will show details of the current and new RAID
array. Start the migration process by clicking
.
7. During migration, M will be displayed in status 3 column of the VG page.
In User data volume page, the status of the migration will also be
shown in status 4 column and the percentage completion of migration
in R%.
Figure 5.6.2
(Figure 5.6.2: A 4-Way RAID 1 array migrates to RAID 3 array.)
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Figure 5.6.3
(Figure 5.6.3: A 4-Way RAID 1 array migrates to RAID 3 array, completion is 9%.)
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Appendix A: Frequently Asked Questions (FAQ)
Q: I've connected my ProSATA SS8 and can see the drives using the Web-based GUI, but I
can't add the drives to a volume group. What's wrong?
A: Before drives can be added to a volume group they must be set to the status "Free Disk". To
do this, browse to the "Physical Disk" page under the "Volume Config" heading. From here select
the drives you would like to use and click "Free Disk". Once you've done that you should be able
to configure the Free Disks into any setup you like.
Q: My ProSATA does not mount when I turn it on.
A: Because the ProSATA utilizes an internal operating system, it's important to let it completely
initialize before mounting the drive to a computer. The ProSATA should take 2-3 minutes to
initialize each time you start it up. The unit will let you know this process is complete with a short,
3-toned beep code (high-low-high). After the beep code sounds, you will need to restart your
computer before the ProSATA will mount. Your computer's OS should detect the SCSI device
during boot up and your ProSATA should be mounted and ready for use once you reach the
desktop.
Q: Can I remove the sides for better access?
A: Some users of the ProSATA may want to remove the side panels of the unit to allow for better
access to internal components. However, doing this puts the unit at risk of overheating. Without
the sides in place the fans are unable to provide the proper air flow necessary to keep the drives
cool. When the unit is fully assembled, the fans are able to create a wind tunnel effect that
constantly pushes fresh air through the unit and over the drives, keeping them from overheating.
Q: What happens when the beep alarm goes off?
A: If the unit starts to emit a regular beeping alarm, this is probably caused by a problem with the
fan. Check the fan to make sure it is spinning. If so, make sure the wires connected to the fan are
fully connected and are not caught in the fan's blades.
Q: What type of cable connector plugs into the Ultra-320 SCSI port on the back of this
product?
A: The Ultra-320 SCSI port on the ProSATA SS8 is of the HD68 (female) connector type. A SCSI
cable with a HD68 male connector will plug into the ProSATA.
Q: I set up my ProSATA with a volume larger than 2TB, but when I connect to the Mac to
format, Disk Utility shows the volume as exactly 2TB.
A: This problem has to do with the block size that the ProSATA's volume is using. This option is
set during the creation of a User Data Volume. The only way to change the block size is to delete
the current UDV and re-create a new one. Use block size 4096 for volumes larger than 2TB and
your Mac should have no trouble seeing the full capacity.
Q: Can I move my drives from one ProSATA SS8 to another?
A: Changing a set of trays/drives from one ProSATA to another is tricky. You must reattach the
LUN (Logical Unit Number) in the GUI after swapping the drives. LUN is the identifying number
assigned to a UDV (User Data Volume) that allows the host system to distinguish between
different UDVs.
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Appendix B: RAID Explained
Disk striping of any number of drives.
Minimum of 2 disks.
RAID 0
Disk mirroring of 2 disks.
RAID 1
Disk Mirroring of N disks.
N-way
mirroring
Choose N number of disks and set as RAID 1 array.
Striping with parity on the dedicated disk.
Minimum of 3 disks.
RAID 3
Striping with interspersed parity over all member disks.
Minimum of 3 disks.
RAID 5
2-dimensional parity protection over all member disks.
Minimum of 4 disks.
RAID 6
Mirroring of RAID 0 volumes.
RAID 0+1
RAID 10
RAID 30
Minimum of 4 disks and array needs to consist of even number of disks.
Striping over RAID 1 volumes.
Minimum of 4 disks and array needs to consist of even number of disks.
Striping over RAID 3 volumes.
Minimum of 6 disks. With 6 disks, two arrays of RAID 3 are striped into one
array as RAID 30.
Striping over RAID 5 volumes.
RAID 50
RAID 60
JBOD
Minimum of 6 disks. With 6 disks, two arrays of RAID 5 are striped into one
array as RAID 50.
Striping over RAID 6 volumes.
Minimum of 8 disks. With 8 disks, two arrays of RAID 6 are striped into one
array as RAID 60.
The abbreviation of “Just a Bunch Of Disks”. JBOD will set the disks as
individual disks.
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Appendix C: Glossary
Cache Volume
CV
Cache is memory used to speed up data transfer to and from a
disk. A Cache Volume is assigned to each UDV for execution of the
data transaction. Each CV can have different cache memory size.
Types of Cache Volume:
Dedicated Cache is a Cache Volume that is assigned to a
specified UDV.
Global Cache is a Cache Volume that is shared by all UDVs.
Degrade mode
Degrade mode is a status alert on the GUI to show which VG
has degraded or failed.
Graphical User Interface
GUI
Host Bus Adapter
HBA
HBA is a device that connects the host system to a storage
system and allows users to pass and retrieve data on this
bus.
Host System
Host
LUN
PD
A computer, typically a server or a workstation, which
operates and monitors the storage system.
Logical Unit Number
LUN is the identifying number assigned to a UDV that allows the
host system to distinguish between different UDVs.
Physical Disk
The PD refers to the actual hard drive that can be selected to
be a member of a volume group.
Redundant Array of Independent Disks
RAID
RAID is a disk array consisting of two or more disks to provide fault
tolerance and better performance. There are different RAID levels
with different degrees of the data protection. Please see Appendix
A.2 for more information on RAID levels and minimum
requirements.
Reserved
This disk was part of a VG and contains data from the VG.
The reserved status may be caused by removal of drive while
system was running. In reserved status, this disk can only be
used to rebuild the VG. To make this disk usable, perform a
Free Disc by manually selecting the disk and click
.
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SCSI Accessed Fault-Tolerant Enclosures
SAF-TE
SAF-TE commands are used to monitor information about the
status of the drives in the array, such as rebuilding, failed,
and spare. SAF-TE also monitors certain environmental
information about the system such as temperature, voltage,
power supply, and fan health.
Small Computer System Interface
SCSI
Self-Monitoring, Analysis and Reporting Technology
Monitoring tool to display drive’s health status.
SMART
Spare Disk
Spare
A disk that is assigned that be a spare is used automatically
to replace a failed drive in a RAID array or a Volume Group.
Spare disks remain idle until the systems detects a failed
drive.
Types of Spares:
Dedicated Spare disks
These are spare disks that only belong to only one specified
VG for recovery/rebuilding.
Global Spare disks
The Global Spare disks are accessible by all VGs to do
rebuilding/recovery.
User Data Volume
UDV
VG
Each VG could be divided into different UDVs. The UDVs
from one VG share the same RAID level, but may have
different volume capacity.
Volume Group
A Volume Group is a RAID array that consists of multiple
physical disks.
Write-Back cache write policy
A caching method that delays copying data modification to
system memory until absolutely necessary. This method
offers a better performance than write-through method, but at
the risk of losing the modifications if the system crashes.
Write-Through cache write policy
A caching method that writes data modifications to both the
cache memory and system memory. This method provides
data consistency between the cache and system memory, but
at a slower performance than the write-back method.
World Wide Name (WWN)
WWN
Also known as World Wide Identifier (WWID). WWN is an
unique identifier created for each physical disk in a Fibre
Channel storage network.
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