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Copyright
Copyright 1993 by Exabyte Corporation. All rights reserved. This item
and the information contained herein are the property of Exabyte
Corporation. No part of this document may be reproduced,
transmitted, transcribed, stored in a retrieval system, or translated into
any language or computer language in any form or by any means,
electronic, mechanical, magnetic, optical, chemical, manual, or
otherwise, without the express written permission of Exabyte
Corporation, 1685 38th Street, Boulder, Colorado 80301.
Disclaimer
Exabyte Corporation makes no representation or warranties with
respect to the contents of this document and specifically disclaims any
implied warranties of merchantability or fitness for any particular
purpose. Further, Exabyte Corporation reserves the right to revise this
publication without obligation to notify any person or organization of
such revisions or changes.
Trademark Notices
AMP is a trademark of AMP Incorporated. Beckman Industrial is a
trademark of Emerson Electric Company. Dale is a registered
trademark of Dale Electronics, Inc. dataMate is a registered trademark
of Methode Electronics, Inc. EXABYTE is a registered trademark and
EXATAPE is a trademark of Exabyte Corporation. Molex is a
registered trademark of Molex Incorporated. All other product names
are trademarks or registered trademarks of their respective companies.
Revision History
Revision
Date
Description
000
December 1993
Initial release
Exabyte Corporation
1685 38th Street
Boulder, CO 80301
Phone: (303) 442-4333
Fax: (303) 442-7170
306216-000
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Agency Standards
When properly installed with a shielded enclosure, shielded cable,
and adequate grounding the of the SCSI bus and the input power, the
EXB-8500 and EXB-8500c meet the following safety standards: UL
Standard 1950, 1st Edition, Information Technology Equipment;
CAN/ CSA Standard C22.2 No. 950-M-89, Safety of Information
Technology Equipment; and IEC 950/ EN60950, Safety of Information
Technology Equipment including Electrical Business Equipment
(TUV).
FCC Notice
This equipment has been tested and found to comply with the limits
for a Class B digital device pursuant to Part 15 of FCC rules. These
limits are designed to provide reasonable protection against harmful
interference in a residential installation. This equipment generates,
uses, and can radiate radio frequency energy and, if not installed and
used in accordance with the instructions, may cause interference to
radio and television communications. There is no guarantee, however,
that interference will not occur in a particular installation. If this
equipment does cause interference to radio or television reception,
which can be determined by turning the equipment off and on, the
user is encouraged to try to correct the interference by one or more of
the following measures:
■
Reorient or relocate the receiving antenna.
■
Increase the separation between the equipment and receiver.
■
Connect the equipment into an outlet on a circuit different from
that to which the receiver is connected.
■
Consult the dealer or an experienced radio/ TV technician for
help and for additional suggestions.
Changes or modifications not expressly approved by Exabyte
Corporation could void the user’s authority to operate the equipment.
CDC Notice
This digital apparatus does not exceed the Class B limits for radio
noise emissions from digital apparatus set out in the Radio
Interference Regulation of the Canadian Department of
Communication.
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Product Warranty Caution
The EXB-8500 and EXB-8500c 8mm Cartridge Tape Subsystems (tape
drives) are warranted to be free from defects in materials, parts, and
workmanship and will conform to the current product specifications
upon delivery. For the specific details of your warranty, refer to your
sales contract or contact the company from which the tape drive was
purchased.
The warranty for the tape drive shall not apply to failures caused by:
■
Physical abuse or use not consistent with the operating
instructions or product specifications provided by Exabyte’s
personnel or agent for the applicable equipment.
■
Modifications by other than Exabyte’s personnel or agent in any
way other than those approved by Exabyte, provided the
warranty shall not be voided by the repair or replacement of
parts or the attachment of items in the manner described in
maintenance or installation instructions provided by Exabyte.
■
Repair by other than Exabyte’s personnel or agent in a manner
contrary to the maintenance instructions provided by Exabyte.
■
Removal of the Exabyte serial number tag.
■
Physical abuse due to improper packaging of returns.
CAUTION
Returning the tape drive in unauthorized packaging may
damage the unit and void the warranty. Refer to the packing
instructions in this book for information.
If problems with the EXB-8500 or EXB-8500c occur, contact your
vendor; do not void the product warranty by allowing untrained or
unauthorized personnel to attempt repairs.
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Contents
Welcome . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
About This Guide . . . . . . . . . . . . . . . . . . . . . . . . . 8
Conventions Used in This Guide . . . . . . . . . . . . . . . . . 8
For More Information . . . . . . . . . . . . . . . . . . . . . . . 8
1 Installing the Tape Drive . . . . . . . . . . . . . . . . . . 9
Unpacking the Tape Drive . . . . . . . . . . . . . . . . . . . 10
Ensuring ESD Protection . . . . . . . . . . . . . . . . . . . . 10
Setting the SCSI ID . . . . . . . . . . . . . . . . . . . . . . . 11
Preparing the Tape Drive for the SCSI Bus . . . . . . . . . . 14
Installing the Tape Drive in a PC Drive Bay . . . . . . . . . . 17
Performing the Initial Power On . . . . . . . . . . . . . . . . 20
2 Operating the Tape Drive . . . . . . . . . . . . . . . . 23
Reading the LEDs . . . . . . . . . . . . . . . . . . . . . . . 23
Selecting Data Cartridges . . . . . . . . . . . . . . . . . . . 25
Setting the Write-Protect Switch . . . . . . . . . . . . . . . . 26
Loading a Data Cartridge . . . . . . . . . . . . . . . . . . . . 27
Unloading a Data Cartridge . . . . . . . . . . . . . . . . . . . 27
3 Preventive Maintenance . . . . . . . . . . . . . . . . . 29
Determining When to Clean the Tape Drive . . . . . . . . . . 29
Using the 8mm Cleaning Cartridge . . . . . . . . . . . . . . . 30
Caring for Data Cartridges . . . . . . . . . . . . . . . . . . . 31
Replacing Data Cartridges . . . . . . . . . . . . . . . . . . . 32
4 Packing the Tape Drive . . . . . . . . . . . . . . . . . . 33
Packing the Tape Drive for Shipment . . . . . . . . . . . . . 34
Environmental Requirements for Shipment . . . . . . . . . . 35
Appendix A Installation Requirements . . . . . . . . . . 37
SCSI Cable Requirements . . . . . . . . . . . . . . . . . . . 37
SCSI Cable Connector . . . . . . . . . . . . . . . . . . . . . 38
Attaching the Tape Drive to a Frame . . . . . . . . . . . . . . 38
Chassis Grounding (optional) . . . . . . . . . . . . . . . . . . 40
Power Cable Connector . . . . . . . . . . . . . . . . . . . . 40
Appendix B Tape Drive Specifications . . . . . . . . . . 42
Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
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W
elcome
®
Thank you for selecting the EXABYTE EXB-8500 or
EXB-8500c 8mm Cartridge Tape Subsystem (tape drive).
The EXB-8500 and the EXB-8500c (shown below) are
high-capacity, high-performance, and highly reliable
streaming tape drives for PC, super-mini, and mainframe
computer systems. Packaged in a standard 5.25-inch
form-factor, the EXB-8500c and EXB-8500 are identical on
the outside except for the letter “c” on the EXB-8500c’s
front panel unload button.
The EXB-8500 provides up to 5.0 GBytes of data storage
capacity on a single, standard 112m EXATAPE™ 8mm
Data Cartridge. Using an average data compression ratio
of 2:1, the EXB-8500c can store up to 10.0 GBytes of data
on an 8mm data cartridge.
The tape drive incorporates a single-ended or differential
Small Computer System Interface (SCSI) controller and is
ideally suited for back-up and restore tasks, data
archiving, and data file interchange.
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About This Guide
Use this guide as you install and operate the tape drive.
In addition to instructions for installation and operation,
this guide provides information about selecting and
maintaining data cartridges, cleaning the tape drive, and
packing the tape drive for shipment.
Conventions Used in This Guide
This guide uses the following conventions to highlight
special information:
Note: Notes provide hints or suggestions about the topic
or procedure being discussed.
Important
Information in Important boxes will help you
successfully complete a procedure or avoid
additional steps in a procedure.
CAUTION
Information in Caution boxes explains how to avoid
damaging the tape drive, the data cartridge, other
equipment, or data recorded on tape.
For More Information
For tape drive specifications, refer to the EXB-8500 and
EXB-8500c 8mm Cartridge Tape Subsystems Product
Specification (510200). For information about
programming SCSI commands for the tape drive, refer to
the EXB-8500 8mm Cartridge Tape Subsystem User’s Manual
(510201) or the EXB-8500c 8mm Cartridge Tape Subsystem
User’s Manual (510209).
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1 Installing the Tape Drive
This section provides instructions for the following tasks:
■
Unpacking the tape drive and ensuring ESD
protection (page 10)
■
Setting the SCSI ID (page 11)
■
Preparing the tape drive for the SCSI bus (page 14)
■
Installing the tape drive in a PC drive bay (page 17)
■
Connecting the tape drive to the power supply (page
20)
■
Performing the initial power on (page 20)
Table 1 lists the tools and equipment you will need.
Table 1 Tools and equipment for installing the CTS
Required Tools and Equipment
SCSI cable
See page 37 for SCSI cable requirements.
(not provided)
Power cable
See page 40 for power cable requirements.
See page 42 for power specifications.
Power supply
Optional Tools and Equipment
®
SCSI ID jumpers or
remote switch
Use a female Molex 22-55-2061 (or
equivalent) cable connector on the remote
switch cable.
External SCSI
bus terminator
(not provided)
Differential tape drive: If the tape drive
terminates the SCSI bus, use a Methode
®
Electronics, Inc. dataMate DM103-01-0 (or
equivalent) differential external terminator.
Single-ended tape drive: If the tape drive
terminates the SCSI bus, you can remove
the tape drive’s internal terminators (R-packs)
and use a dataMate DM103-02-0 (or equi-
valent) single-ended external terminator.
Mounting frame
or brackets, four
Depending on your installation requirements,
can be used to mount the tape drive.
#6-32 screws, screwdriver
Flat-nose
wiring pliers
Can be used to remove the R-packs from a
single-ended tape drive. See page 15.
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1⁄4-inch female spade
connector or M3-0.5
Can be used for additional chassis
grounding.
6
mm self-tapping screw
Unpacking the Tape Drive
The tape drive’s packaging is designed to protect the tape
drive from shock, vibration, moisture, and electrostatic
discharge (ESD). Save all original packaging in case you
need to repack or ship the tape drive.
CAUTION
If the temperature of the room in which you are
unpacking the tape drive differs from the storage
location by 15° C (27° F) or more, let the tape drive
acclimate in its packaging to the room environment
for at least 12 hours before opening the box. This
helps prevent condensation damage to the drive.
After you unpack the tape drive, check the contents of the
carton against the packing list and inspect the tape drive
for possible damage. If a part is missing or the tape drive
is damaged, notify the carrier and your vendor
immediately.
Note: If the tape drive has been stored for more than six
months, follow the instructions on page 21 when
applying power for the first time. (Check the
MLCH label on the top of the tape drive to find
out when the tape drive was manufactured.)
Ensuring ESD Protection
Follow these procedures to protect the tape drive from
electrostatic discharge (ESD):
■
Leave the tape drive in its antistatic bag until you are
ready to install it.
■
Use an antistatic mat and grounded static protection
wristband. If a mat and wristband are unavailable,
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discharge static electricity from your body before
handling the tape drive. (Touch a known grounded
surface, such as your computer’s metal chassis.)
■
If you must lay the tape drive down, place it into or
on top of the antistatic bag.
Setting the SCSI ID
After unpacking the tape drive, you can change the tape
drive’s default SCSI ID, if necessary. Do not use SCSI ID
7. This SCSI ID is used by your SCSI adapter card.
You can use any of the following methods to set the ID:
■
Set the DIP switches on the rear of the tape drive.
■
Attach jumpers (shunts) to the pins on the tape
drive’s SCSI ID jumper block. Jumpers are already
installed on the jumper block when the tape drive is
shipped.
■
Connect a remote switch to the SCSI ID jumper block
on the back of the tape drive.
These methods are explained in the following sections.
Important
If you are using a remote switch or jumpers to set
the SCSI ID, make sure that the DIP switches are set
to SCSI ID 0 (the default). Similarly, if you are using
the DIP switches to set the SCSI ID, make sure that
the remote switch or jumpers are set to SCSI ID 0.
If you set both the DIP switches and the remote
switch to a particular SCSI ID, the actual SCSI ID
will be the logical OR of the two settings. For
example, if the remote switch is set for SCSI ID 1
and the DIP switches are set for SCSI ID 2, the
actual SCSI ID will be 3.
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Setting the SCSI ID with the DIP Switches
To set the SCSI ID using the DIP switches, follow these
steps:
1. Locate the SCSI ID DIP switches on the back of the
tape drive, as shown in Figure 1.
2. Change the DIP switch settings to the correct SCSI
ID for your configuration. Figure 2 shows the
settings for SCSI IDs 0 through 7.
3. Make sure that the remote switch or jumpers are set
to SCSI ID 0.
Figure 1 SCSI ID DIP switches and jumper block
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On
Off
On
Off
Figure 2 DIP switch settings for the tape drives’s SCSI
Setting the SCSI ID with Jumpers
To set the SCSI ID using jumpers, follow these steps:
1. Locate the SCSI ID jumper block on the back of the
tape drive, as shown in Figure 1.
2. Install the jumpers on the jumper block to obtain
the correct SCSI ID for your configuration. Figure 3
shows how to position the jumpers for SCSI IDs 0
through 7.
3. Make sure that the DIP switches are set to SCSI ID 0.
Figure 3 Jumper settings for the tape drive’s SCSI ID
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Setting the SCSI ID with a Remote Switch
If you want to set the SCSI ID remotely, you can attach a
remote switch assembly (not provided with the tape
drive) to the tape drive’s SCSI ID jumper block. To set the
SCSI ID with a remote switch, follow these steps:
1. Locate the SCSI ID jumper block on the back of the
tape drive, as shown in Figure 1.
2. If necessary, remove the jumpers from the pins.
3. Connect a remote switch to the jumper block.
Ensure that the remote switch is no more than
30.5 cm (12 inches) from the jumper block. See
Table 1 on page 9 for connector requirements.
4. Make sure that the DIP switches (Figure 1) are set
to a SCSI ID of 0.
5. Change the settings on the remote switch to the
correct SCSI ID for your configuration. The switch
settings should emulate the jumper positions shown
in Figure 3.
Note: For specific information about pin
assignments for the SCSI ID jumper block,
refer to the EXB-8500 and EXB-8500c Product
Specification.
Preparing the Tape Drive for the SCSI Bus
The SCSI bus that you attach the tape drive to must be
terminated correctly to ensure proper operation. The
devices that are physically located at each end of the SCSI
cable must have terminators installed. All other devices
on the SCSI cable must not have terminators installed.
If the tape drive will be located at the end of the SCSI bus,
you must terminate the tape drive. The procedure you
use depends on whether the tape drive uses a
single-ended or a differential SCSI configuration.
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Terminating a Single-Ended Tape Drive
The single-ended tape drive includes two single in-line
package resistor terminators (R-packs) that can be left in
place if the tape drive terminates the SCSI bus.
CAUTION
The R-packs must be removed if the tape drive does
not terminate the SCSI bus or if you plan to use an
external SCSI bus termination.
Optional External Termination
If desired, you can terminate the single-ended tape drive
externally by removing the R-packs from the back of the
tape drive and installing an external terminator. Exabyte
recommends a Methode Electronics, Inc. dataMate
DM103-02-0 single-ended external terminator.
Removing the R-Packs
To remove the R-packs, follow these steps:
1. Locate the two R-packs on the back of the tape
drive, as shown in Figure 4.
Figure 4 Location of R-packs (single-ended
configuration)
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2. Using a pair of flat-nose wiring pliers, grasp each
R-pack at the center and pull it straight out. Be
careful not to squeeze the pliers too tightly or you
may break the R-pack.
Replacing the R-Packs
If you need to put the R-packs back in the tape drive,
make sure that pin 1 of each R-pack is aligned with pin 1
of the socket and that no pins are bent. As shown in
Figure 4, the writing on the R-pack should face upward.
Pin 1 of the R-pack is marked with a colored line or dot
and should line up with the right side of the socket.
CAUTION
If you replace an R-pack, be sure to use the correct
type to avoid damaging the tape drive. The tape
drive uses two 10-pin, 9-resistor R-pack
terminators, rated at 110 ohms. Replacement
R-packs are available from Exabyte (part number
002228).
Terminating a Differential Tape Drive
The differential tape drive does not include internal
terminators. If a differential tape drive terminates the
SCSI bus, it must be terminated externally. See page 9 for
information about the recommended terminator.
Connecting the SCSI Cable
The tape drive uses a standard 50-pin single-ended SCSI
cable connector. Push the keyed connector on the SCSI
cable on to the SCSI connector on the back of the tape
drive. The connector is keyed so that it can be connected
only one way.
Figure 5 shows the location of the SCSI connector.
Note: The SCSI cable for connecting the tape drive to
the host is not provided with the tape drive. Refer
to page 37 for information about the requirements
for the SCSI cable.
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Figure 5 Location of SCSI connector
Installing the Tape Drive in a PC Drive Bay
If you are planning to mount the tape drive in a full-high
PC drive bay, follow the guidelines in this section.
Otherwise, refer to Appendix A for installation
requirements, then resume reading on page 20,
“Performing the Initial Power On.”
Before beginning, prepare your computer as follows:
1. Turn off the computer and attached devices.
2. Unplug the power cord.
3. Remove the computer’s cover as described in your
computer owner’s manual.
4. Remove the cover plate(s) from the drive bay(s) you
intend to use. Refer to your computer owner’s
manual for instructions.
Note: For some computers you may need to use two
half-high drive bays to accommodate the tape
drive.
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5. If necessary, remove one of the floppy disk drives
to provide an empty full-high drive bay for the tape
drive.
CAUTION
If you remove floppy disk drive B to install the tape
drive, be sure to change your system configuration
to reflect this. Refer to your computer owner’s
manual for details on running the system’s setup
program.
Mounting Procedure
Follow these steps to mount the tape drive:
1. Check for the presence of a load resistor in the
computer. If it is present, disconnect the load
resistor cable from the power supply. Refer to your
computer owner’s manual for more information.
2.
Use #6 32 screws to attach two slide rails to the
sides of the tape drive (see Figure 6). The tapered
end of each rail should point toward the rear of the
tape drive.
Figure 6 Attaching the slide rails to the tape drive
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3. From the front of the computer, thread the SCSI
cable into the computer through the open bay. Slide
the tape drive into the bay until the faceplate is
flush with the front of the bay.
4. Secure the tape drive to the drive bay as instructed
in your computer owner’s manual.
5. Connect the SCSI cable to your SCSI adapter card
(see Figure 7).
Figure 7 Inserting the drive into the drive bay and
connecting the SCSI cable to the SCSI
6. If you need additional chassis grounding, connect a
1
grounding wire fitted with a ⁄4-inch female spade
connector to the ground tab on the back of the tape
drive. Or, use an M3-0.5 6 mm self-tapping screw
to connect the wire to the grounding hole. The
ground tab and grounding hole are shown in
Figure 8.
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Figure 8 Location of grounding tab, grounding hole,
and power connector
7. Connect power cable from the power supply to the
4-pin power connector on the back of the tape drive.
CAUTION
■
■
Make sure that the PC power is off before you
connect the cable.
Do not force the plug into the connector. The keyed
edges of the plug and the connector must match.
8. Replace the computer’s cover.
Performing the Initial Power On
The procedure you use to perform the initial power on
depends on how long the tape drive has been stored. If
you are not sure how long the tape drive has been stored,
check the MLCH (machine level control history) label on
the top of the tape drive to find out when the tape drive
was manufactured. Although the tape drive may have
been operated since it was manufactured, for the purpose
of the initial power on, assume that it has been stored
throughout this period.
Tape Drive Stored for Less Than Six Months
If the tape drive has been stored for less than six months,
the only step you need to perform for the initial
power-on is to apply power to the tape drive.
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When power is applied, the tape drive performs its
power-on initialization and self-test (POST). Assuming
that no data cartridge is loaded and that the tape drive is
connected correctly, POST takes about 65 seconds, as
follows:
■
During the first part of POST, both the amber and
green LEDs are lit.
■
During the second part of POST, various
combinations of the LEDs may be lit, depending on
whether the tape drive is connected to the SCSI bus
and whether a data cartridge is loaded.
■
After the power-on initialization and self-test have
completed, both LEDs will be turned off if there is no
data cartridge loaded. If a data cartridge is loaded,
the green LED will remain on.
Important
If the amber LED does not go out after the
power-on initialization and self-test are complete,
an error has occurred. Contact your vendor.
When POST completes, the tape drive is ready for normal
operation.
Tape Drive Stored for Six Months or More
If the tape drive has been stored for six months or more,
perform the following steps using your backup software
to ensure that the tape drive’s internal lubrication is
properly distributed:
1. Apply power to the tape drive. The tape drive
performs its POST as on page 20.
2. Locate a data cartridge that does not contain any
valuable information. Set the write-protect switch
to write enabled (see page 26).
3. Press the unload button on the front of the tape
drive. Insert the data cartridge with the label side
up and the write-protect switch facing you.
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4. Push the door shut and wait while the tape drive
loads the tape and positions it at LBOT. When the
amber LED is off and the green LED is on, the tape
is loaded and the tape drive is ready.
5. Write approximately 500 MBytes of data to the tape.
6. Read the data written in step 5.
7. Repeat steps 5 and 6 at least two times or for two
hours (whichever is greater).
Note: If errors occur, reset the tape drive and
repeat steps 5 though 7 as appropriate. If the
error recurs, contact your vendor.
When you have completed step 7, the tape drive is ready
for normal operation.
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2 Operating the Tape Drive
This section includes information about the following:
■
Reading the tape drive’s LEDs
■
Setting the write-protect switch on the data cartridge
Loading and unloading a data cartridge
■
Figure 9 shows the controls and indicators on the front
panel of the EXB-8500c. (The front panel of the EXB-8500
is the same except that it has no “c” on the unload
button.)
Figure 9 Unload button and LEDs
Reading the LEDs
The tape drive uses two LEDs to indicate its operating
states. The LEDs indicate the following general
conditions:
■
The green LED indicates that the tape drive can
accept a tape access command.
■
The amber LED indicates SCSI bus activity and tape
drive error conditions
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Table 2 shows specific combinations of LEDs that may
occur during tape drive operation. You may occasionally
observe LED combinations and sequences not described
in Table 2. These other combinations represent special or
unusual conditions that are beyond the scope of this
table. (For example, a fairly complex LED sequence
occurs when you load new microcode from tape.)
Table 2 Tape drive states indicated by the LEDs
LEDs
= Off
Tape Drive
(
= On
= Flashinga)
Green LED
■
State
Amber LED
POSTb
POST (passed)c
Ready (tape loaded)
Normal tape motion
High-speed search/rewind
Servo errore
■
■
slow
d
■ or
fast
■ or or
four s then
CRC failf
Unrecoverable faultf
slow
■ or
■ or
Failed POST
fast
Unload button fail
a
b
Slow flash = 1 flash/second (0.94 Hz).
Fast flash = 4 flashes/second (3.76 Hz).
The tape drive is performing power-on self-test diagnostics. This takes
about
65 seconds.
c
The green LED may go off before the amber LED if no tape is loaded.
d
The amber LED is on (■) during data transfer over the SCSI bus.
The amber LED is off ( ) when no data transfer is occurring. The
combination of on and off may appear as an irregular flash.
e
f
Refer to page 27 for information about clearing servo errors.
CRC failures occur only within the first two seconds after a power-on reset.
An unrecoverable fault can occur anytime during operation.
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Selecting Data Cartridges
By selecting high-quality data cartridges and storing
them properly, you can expect a long shelf-life and
optimal data integrity from them. High quality tapes also
help maintain tape drive reliability by minimizing wear
on the recording heads.
Choosing High-Quality Data Cartridges
Available from Exabyte, EXATAPE™ 8mm Data
Cartridges are formulated specifically for use in Exabyte
products. EXATAPE data cartridges reduce head and
tape path wear and have a shelf life exceeding 30 years
when used according to recommendations. Available in
three sizes (112m, 54m, and 15m), EXATAPE data
cartridges are the only data cartridges recommended for
use with all Exabyte products.
CAUTION
Exabyte strongly recommends that you use
EXATAPE data-grade metal-particle media in the
tape drive.
Never use video-grade tape for data storage.
Video-grade tape can be less accurate than
data-grade tape when recording high-density data
and more abrasive to tape drive recording heads. In
particular, Exabyte strongly discourages use of the
following types of video-grade tapes:
✗ “Extended length” (such as 135-, 140-, and
150-minute tapes)
✗ Hi-8 metal particle (MP), metal evaporative
(ME), or barium ferrite (BaFe) tapes. These tapes
will be ejected automatically by the tape drive.
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Setting the Write-Protect Switch
EXATAPE™ 8mm data cartridges are equipped with a
write-protect switch, shown in Figure 10, to prevent data
on the tape from being unintentionally overwritten.
Before loading a data cartridge in the tape drive, ensure
that the write-protect switch is set correctly for the
desired operation. You can use a ball-point pen or similar
instrument to set the write-protect switch as follows:
■
To write protect the data cartridge, move the
write-protect switch away from the edge of the data
cartridge. If the red tab is visible, the cartridge is
write protected and cannot be written to or erased.
■
To write enable the data cartridge, move the
write-protect switch toward the edge of the data
cartridge. If the red tab is not visible, the data
cartridge is write enabled and can be written to or
erased.
Figure 10 Write-protect switch on an EXATAPE 8mm
data cartridge
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Loading a Data Cartridge
To load a data cartridge into the tape drive, follow these
steps:
1. Ensure that the write-protect switch has been set
correctly for the desired operation, as explained on
page 26.
2. If you have just powered on the tape drive, be sure
that the green LED is off, indicating that the tape
drive has passed its power-on self-test and is ready
to load the data cartridge.
3. If necessary, press the unload button to open the
door on the tape drive.
4. Insert the data cartridge into the tape drive with the
label side up and the write-protect switch facing
you.
5. Gently close the door. The tape drive automatically
loads the data cartridge and indicates ready status
(green LED on).
Note: Most tape drives load the data cartridge
automatically. However, your application
software may disable the autoload function. If the
data cartridge does not go to the ready state after
you close the door, consult your software
documentation for information.
Unloading a Data Cartridge
Unload Button
The unload button is the only operator control on the
tape drive. It is used to unload the tape from the tape
drive.
The unload button can also be used to clear servo and
other errors. If a servo or hardware error occurs, press the
unload button to reset the tape drive. Then, if necessary,
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wait a few seconds and press the button again to eject the
tape.
To unload a data cartridge, press the unload button on
the tape drive’s front panel. The tape drive completes the
current operation, writes any buffered data to tape,
unloads the tape from the tape path, and ejects the
cartridge.
Note: Some tape drives are configured to eject the tape
immediately when the unload button is pressed.
Refer to the EXB-8500 and EXB-8500c Product
Specification if you have a tape drive configured in
this way.
Error During Unload Procedure
If an error exists before or during the unload procedure,
the unload sequence will be suspended and the amber
LED will flash. If the unload button is pressed again, the
unload sequence will be reattempted; however,
unwritten data in the buffer will not be written to tape.
The buffer and errors will be cleared.
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3 Preventive Maintenance
The only routine maintenance required by the tape drive
is regular cleaning of the tape drive heads and tape path.
Use only an Exabyte or Exabyte-approved 8mm Cleaning
Cartridge. Proper storage and maintenance of your data
cartridges will maximize the shelf life of your tapes and
assure data integrity.
Important
Using a cleaning method other than the Exabyte
8mm Cleaning Cartridge or an Exabyte-approved
cleaning cartridge will void the warranty for the
tape drive and can lead to premature head wear.
Determining When to Clean the Tape Drive
You should clean the tape drive’s heads and tape path
after every 30 tape motion hours. This cleaning
frequency is independent of the format in which you
write and read data. However, if you are using the tape
drive in a particularly dirty environment, or if you
operate it infrequently, you may want to clean the tape
drive more often than every 30 tape motion hours.
Some backup software programs may notify you when
the tape drive needs cleaning. Refer to the documentation
for your backup software for more information.
Note: The tape drive keeps track of its tape motion
hours internally. To determine when the tape
drive needs to be cleaned, issue a REQUEST
SENSE (03h) command and look at the setting of
the CLN and CLND bits (byte 21, bits 3 and 4). If
the CLN bit is set to 1, the tape drive needs to be
cleaned. This bit is reset to 0 when you perform a
successful cleaning cycle. The CLND bit is set to 1
when the tape drive has been cleaned and is reset
to 0 when the next REQUEST SENSE command is
received.
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Using the 8mm Cleaning Cartridge
CAUTION
To prevent contamination of the tape drive and
damage to the heads, do not use the cleaning
cartridge for more than the number of cleaning
cycles specified on the cartridge label. Reusing the
material in the cleaning cartridge will redistribute
contaminants previously removed from the tape
path. Discard the cleaning cartridge after you have
used it for the specified number of cleaning cycles.
To use the cleaning cartridge, follow these steps:
1. Apply power to the tape drive. When the power-on
self-test is complete, press the unload button and
remove any data cartridge from the tape drive.
2. Check the usage record on the label of the cleaning
cartridge to make sure that there is at least one
cleaning cycle remaining (see Figure 11). If there are
no cleaning cycles remaining, discard the cleaning
cartridge and use a new one.
Figure 11 Exabyte 8mm Cleaning Cartridge with label
showing cleaning cycles left
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3. Insert the cleaning cartridge in the tape drive and
close the door.
4. The cleaning cycle is performed automatically by
the tape drive and takes approximately 38 seconds.
When the cleaning cycle is complete, the cleaning
cartridge is automatically unloaded and ejected
from the tape drive.
Important
If there are no more cleaning cycles remaining for
the cleaning cartridge, the tape drive ejects it
without completing the cleaning cycle.
Note: To confirm that a cleaning was done, issue a
REQUEST SENSE (03h) command and check
the setting of the CLND bit. If set to 1, this bit
indicates that the cleaning was successful. A
setting of 0 indicates that the cleaning was
not done.
5. If the cleaning cycle was successful, record the date
the cleaning was performed on the cleaning
cartridge label. Store the cleaning cartridge for
future use if it still has cycles remaining. Or,
discard it if no more cleaning cycles remain.
Caring for Data Cartridges
To maximize the shelf life of your tapes and assure data
integrity, follow these guidelines when storing data
cartridges:
■
Place a label or other reference information on the
cartridge adjacent to the write-protect switch.
■
Store cartridges in a cool, non-magnetic environment.
Follow the cartridge manufacturer’s specifications
for storage temperature and other environmental
requirements. Do not allow the temperature and
humidity in the storage environment to fluctuate.
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■
Keep the storage location as free of airborne
particulates as possible. To eliminate obvious
sources of particulates, do not permit anyone to smoke,
eat, or drink near the storage area, and do not store
cartridges near a copier or printer that may emit
toner and paper dust.
■
Store data cartridges as soon as possible after you
have written data to them. mmediate storage helps
avoid many of the conditions that can damage tapes,
such as temperature and humidity fluctuation,
particulate contamination, and excessive handling.
■
■
Store data cartridges with the write-protect switch
in the protected position. See page 26.
Store each cartridge on one of its long edges, not
flat on its side (see Figure 12). When a data cartridge
is stored on its side, the tape inside the cartridge is
actually on its edge. In this position, stress is placed
on the tape edges and can lead to tape damage. For
the same reason, never stack cartridges on top of
each other or lean them at an angle for extended
periods of time.
Figure 12 Do not store a data cartridge on its side
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Replacing Data Cartridges
Approximately once each year, you may want to run
each tape through a full pass and check its error statistics.
If errors have increased significantly since the previous
test or if they exceed a certain predetermined threshold,
you should re-archive the data to a new tape and discard
the old tape.
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4 Packing the Tape Drive
You can ship the tape drive with either one drive per
carton (single-pack) or with four drives per carton
(four-pack). Figure 13 on page 34 shows the single-pack
carton and packing materials.
CAUTION
■
To avoid damaging the tape drive and voiding
your
warranty, be sure to use the original shipping
materials (or replacement materials obtained
from Exabyte) when repacking and shipping
the tape drive.
■
To ensure that the packaging meets the required
specifications, do not modify the packaging in
any way. The shipping carton and packing
materials are not intended to be used for shipping
items other than or in addition to a tape drive.
Table 3 shows the dimensions and weights of the
single-pack and four-pack shipping cartons.
Table 3 Dimensions and weights of CTS shipping cartons
Size
Dimensions
Weight (with tape drive)
34.3 cm long
27.3 cm wide
22.2 cm high
(13.5 10.75
8.75 inches)
1 tape drive: 3.6 kg (8.0
Single-pack
lbs)
58.4 cm long
34.9 cm wide
29.8 cm high
(23.0 13.75
11.75 inches)
4 tape drives: 10.4 kg
Four-pack
(23.0 lbs)
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Packing the Tape Drive for Shipment
To pack the tape drive for shipment, follow these steps:
1. Obtain the original shipping carton or contact your
vendor to receive a new one.
2. Assemble the carton and tape it shut at the bottom
with two-inch (51 mm) packing tape.
3. Place each tape drive in an antistatic bag. Tape the
bag shut.
4. Place the bottom packing cushion in the carton,
with the fitted area for the tape drive or tape drives
facing up.
5. Single-pack shipping carton (Figure 13):
a.
b.
Place the tape drive into the fitted area in the
packing cushion.
Place the top packing cushion over the tape
drive, with the cardboard side facing down.
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Figure 13 Single-pack carton and packing materials
6. Four-pack shipping carton:
CAUTION
Do not use the four-pack shipping carton for fewer
than four tape drives. If you are shipping one, two,
or
three tape drives, use a single-pack carton for each
tape drive.
a.
Place four tape drives in the bottom packing
cushion’s slots. You can place the tape drives
in the packing cushion so that either the front
or rear panel faces up.
b.
Place the top packing cushion over the tape
drives.
7. Close the carton and tape the top seam so that the
carton is completely closed.
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Environmental Requirements for Shipment
When shipping a tape drive, be sure to comply with the
environmental specifications shown in Table 4.
Table 4 Environmental specifications for shipping the tape drive
Temp. Range
–40° C to +60° C (–40° F to +140° F)
Temp.
Variation
1° C per minute up to a maximum of 20° C per hour
(2° F per minute up to a maximum of 36° F per hour)
Rel. Humidity
Wet Bulb
10% to 90% non-condensing
26° C max (79° F max)
Altitude
–304.8 m to +12,192 m (–1,000 ft to +40,000 ft)
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Appendix A Installation Requirements
This appendix provides specific installation requirements
for the tape drive. It also provides guidelines for the
following tasks:
■
Selecting the correct SCSI cable and connector (pages
37 and 38)
■
Attaching the tape drive to a frame (page 38)
■
Providing chassis grounding (page 40)
■
Connecting the tape drive to the power supply (page
40)
If you have already installed the tape drive in a PC, you
can skip this appendix.
SCSI Cable Requirements
The SCSI cable for connecting the tape drive to the host is
not provided with the tape drive. You must provide a
cable that complies with the appropriate safety and
regulatory agency requirements. To comply with FCC,
Canadian DOC, and VDE limits, the tape drive requires
shielded cables when the cables are external to the
mounting enclosure.
General Requirements
Use a 50-conductor flat cable or 25-signal twisted pair
cable. A minimum conductor size of 28 AWG is
recommended to minimize noise effects and ensure
proper distribution of terminator power.
Ideally, to match the cable terminators, the cable should
have a characteristic impedance of 122 ohms (differential)
or 132 ohms (single-ended). However, since cables with
this high of a characteristic impedance are not generally
available, somewhat lower impedances are acceptable. A
characteristic impedance of 100 ohms ± 10% is
recommended for unshielded flat or twisted-pair ribbon
cable. A characteristic impedance greater than 90 ohms is
recommended for shielded cables.
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Note: To minimize discontinuities and signal
reflections, ensure that cables used on the same
bus have the same impedances.
Cable Length Requirements for Differential
Configurations
For differential SCSI configurations, ensure that the sum
of all the SCSI cable lengths does not exceed 25.0 meters
(82.02 feet). A stub length of no more than 0.2 meters
(8 inches) is allowed off the mainline interconnection
within any connected equipment. The stub length within
the tape drive is less than 50 mm (1.97 inches).
Cable Length Requirements for Single-Ended
Configurations
For single-ended SCSI configurations, ensure that the
sum of all the SCSI cable lengths does not exceed 6.0
meters (19.68 feet). A stub length of no more than 0.1
meters (4 inches) is allowed off the mainline
interconnection within any connected equipment. The
stub length within the tape drive is less than 50 mm
(1.97 inches).
SCSI Cable Connector
To connect the tape drive to the SCSI bus, use a 50-pin
female ribbon cable connector (AMP™ No. 1-746285-0 or
equivalent). The tape drive’s SCSI connector is located at
the rear of the tape drive. The connector is a 50-pin male
ribbon cable connector, consisting of two rows of 25 pins
with adjacent pins 2.54 mm (0.1 inch) apart. For
information about the specific SCSI connector pin
assignments for differential and single-ended tape drives,
refer to the EXB-8500 and EXB-8500c Product Specification.
Attaching the Tape Drive to a Frame
The main housing of the tape drive includes two sets of
mounting holes (one set on the sides and one set on the
bottom, as shown in Figures 14 and 15) to allow for a
number of mounting positions. These mounting holes
accommodate #6-32 screws. Refer to the EXB-8500 and
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EXB-8500c Product Specification for detailed information
about the spacing of these mounting holes.
When mounting the tape drive, follow these guidelines:
■
The mounting location must meet the environmental
requirements discussed in the EXB-8500 and
EXB-8500c Product Specification. These requirements
specify limits for operating temperature, humidity,
airflow, particulate contamination, shock, and
vibration.
■
The tape drive must be mounted solidly and
securely. To assure reliability, there must be no
distortion of the tape drive’s metal housing. Do not
install the tape drive in such a way that its frame is
unsupported. For example, do not hang the tape
drive by an edge.
■
Use either the four mounting holes on the sides or the
four mounting holes on the bottom (“A” or “B,” as
shown in Figures 14 and 15). Using combinations of
mounting holes from different sets may distort the
frame.
■
Objects such as screw heads, cables, or adjacent
devices must not press against the frame of the tape
drive.
■
The ventilation slots at the sides and top of the tape
drive must be free of obstruction so that adequate
airflow is provided.
■
There must be sufficient space to access and operate
the front panel controls.
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Figure 14 Mounting holes on the sides of the tape drive
Figure 15 Mounting holes on the bottom of the tape
drive
Chassis Grounding (optional)
If additional chassis grounding is desired, connect a
1⁄4-inch female spade connector to the ground tab at the
rear of the tape drive. Or, connect an M3-0.5 6 mm
self-tapping screw to the grounding hole. The ground tab
and grounding hole are shown in Figure 8 on page 19.
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Note: The power supply returns are connected to the
chassis, so you cannot isolate logic common
ground from chassis ground.
Power Cable Connector
The tape drive operates from standard +5 VDC and +12
VDC supply voltages; it cannot use external AC power.
Safety agency certification requires that the supplied
voltage be from a Safety Extra-Low Voltage source (per
IEC 950). Refer to Appendix B for tape drive power
specifications.
CAUTION
The tape drive does not provide any overvoltage or
over current protection. For this reason, be certain
that the power is off before connecting the tape
drive to a power supply.
The power connector used in the tape drive is compatible
with power connectors used for standard 5.25-inch
devices. To connect the tape drive to a power cable, use
an AMP 1-480424-0 series or equivalent female connector.
For information about the specific power connector pin
assignments, refer to the EXB-8500 and EXB-8500c Product
Specification.
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Appendix B Tape Drive Specifications
General
Front panel Unload button, LED indicators for
SCSI activity, tape motion,and errors
Back panel SCSI cable connector, power
connector, jumper block and DIP
switch for SCSI ID, SCSI terminator
R-packs (single-ended configuration)
Interface SCSI-1 and SCSI-2, single-ended or
differential
Physical Characteristics
Form factor 5.25-inch full-high
Size
82.5 mm (3.25 inches) high
146.0 mm (5.75 inches) wide
203.2 mm (8.00 inches) deep
Weight 1.2 kilograms (2.6 pounds)
Environmental
Operating temperature
+5°C to +40°C (+41°F to +104°F)
–40°C to +60°C (–40°F to +140°F)
Non-operating temperature
Operating rel. humidity 20% to 80%
Non-operating rel. humidity 10% to 90%
Sustained Data Transfer Rate
8200 format 262.5 KBytes/sec
8200ca format (EXB-8500c) 500 KBytes/sec
8500 format 500 KBytes/sec
8500ca format (EXB-8500c) 1 MByte/sec
Capacity of EXATAPE 112m Data Cartridge
8200 format 2.5 GBytes
8200ca format (EXB-8500c) 5.0 GBytes
8500 format 5.0 GBytes
8500ca format (EXB-8500c) 10.0 GBytes
Power and Reliability
Supply voltages
Standard +5 VDC and +12 VDC ±5%
Tolerance 125 mVpp max.b
Maximum current 2.09 Amps at +5 VDC;
0.75 Amps at +12 VDC
Maximum power 10.45 watts at +5 VDC;
consumption 9.1 watts at +12 VDC
Mean time between failure 40,000 hours @ 10% duty cycle
a Assuming an average compression ratio of 2:1.
b The ripple voltage is included in the total voltage tolerance.
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M
Index
maintenance
see preventative maintenance
mounting requirements 38 – 39
A
agency standards
3
O
C
operating the tape drive 23 – 24, 27 – 28
cable requirements
power cable 40
SCSI cable 37 – 38
P
packing the tape drive 33 – 35
power cable requirements 40
power supply
connecting tape drive to 20, 40
preventive maintenance 29 – 31
cartridges
see data cartridges
chassis grounding 19, 40
cleaning the tape drive
frequency 29
instructions 30 – 31
condensation 10
R
R-packs 15 – 16
remote switch for setting SCSI ID 14
resistor terminators 15 – 16
D
data cartridges
S
care of 31 – 32
loading 27
SCSI bus
cable requirements 37 – 38
connecting the tape drive to 14, 16
differential SCSI 38
single-ended SCSI 38
stub length 38
replacing 32
storing 31 – 32
unloading 27 – 28
write-protect switch 26
differential SCSI
cable requirements 38
termination 9, 16
DIP switches for setting SCSI ID 12
termination 9, 15 – 16
SCSI ID
requirements for setting 11
setting with DIP switch 12
setting with jumpers 13
setting with remote switch 14
shipping the tape drive 33 – 35
single-ended SCSI
E
electrostatic discharge 10
EXATAPE 8mm Data Cartridge 25
G
cable requirements 38
termination 15 – 16
grounding, chassis 19, 40
H
T
handling the tape drive 10
tape drive
cleaning 29 – 31
I
controls and indicators 23 – 24
installation 9 – 21, 38 – 40
loading a data cartridge 27
packing and shipping 33 – 35
providing chassis grounding 19
unloading a data cartridge 27 – 28
unpacking 10
installation
attaching to a frame 38 – 39
cable requirements 37 – 38
connecting the power supply 20
connecting to the SCSI bus 14, 16
grounding 19, 40
power cable requirements 40
setting the SCSI ID 11
terminators for SCSI bus 9, 15 – 16
U
J
unload button
jumpers for setting SCSI ID 13
location 23
operation 27
L
LEDs
unload procedure 27 – 28
unpacking instructions 10
location 23
states indicated by 23 – 24
load procedure 27
W
write-protect switch 26
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Exabyte Corporation
1685 38th Street
Boulder, Colorado USA 80301
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