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TA1000 Tape Drive Array
Reference Guide
First Edition (June 2000)
Part Number 189904-001
Compaq Computer Corporation

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Notice
© 2000 Compaq Computer Corporation.
Compaq, and the Compaq logo, registered in U.S. Patent and Trademark Office. Microsoft, MS-DOS,
Windows, and Windows NT are registered trademarks of Microsoft Corporation in the United States
and/or other countries. Intel and Pentium are registered trademarks and Celeron and Xeon are
trademarks of Intel Corporation in the United States and/or other countries. UNIX is a registered
trademark of The Open Group. All other product names mentioned herein may be trademarks or
registered trademarks of their respective companies.
Compaq shall not be liable for technical or editorial errors or omissions contained herein. The
information in this document is subject to change without notice.
The information in this publication is subject to change without notice and is provided “AS IS”
WITHOUT WARRANTY OF ANY KIND. THE ENTIRE RISK ARISING OUT OF THE USE OF
THIS INFORMATION REMAINS WITH RECIPIENT. IN NO EVENT SHALL COMPAQ BE
LIABLE FOR ANY DIRECT, CONSEQUENTIAL, INCIDENTAL, SPECIAL, PUNITIVE OR
OTHER DAMAGES WHATSOEVER (INCLUDING WITHOUT LIMITATION, DAMAGES FOR
LOSS OF BUSINESS PROFITS, BUSINESS INTERRUPTION OR LOSS OF BUSINESS
INFORMATION), EVEN IF COMPAQ HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
DAMAGES. THE FOREGOING SHALL APPLY REGARDLESS OF THE NEGLIGENCE OR
OTHER FAULT OF EITHER PARTY AND REGARDLESS OF WHETHER SUCH LIABILITY
SOUNDS IN CONTRACT, NEGLIGENCE, TORT, OR ANY OTHER THEORY OF LEGAL
LIABILITY, AND NOTWITHSTANDING ANY FAILURE OF ESSENTIAL PURPOSE OF ANY
LIMITED REMEDY.
The limited warranties for Compaq products are exclusively set forth in the documentation
accompanying such products. Nothing herein should be construed as constituting a further or additional
warranty.
Compaq TA1000 Tape Drive Array Reference Guide
First Edition (June 2000)
Part Number 189904-001

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Contents
About This Guide
Text Conventions.......................................................................................................vii
Symbols in Text....................................................................................................... viii
Symbols on Equipment............................................................................................ viii
Important Safety Information .............................................................................ix
Rack Stability ..............................................................................................................x
Getting Help ................................................................................................................x
Compaq Technical Support ..................................................................................x
Compaq Website .................................................................................................xi
Compaq Authorized Reseller...............................................................................xi
Chapter 1
Tape Array Overview
Introducing the Array .............................................................................................. 1-1
Tape Array Features ................................................................................................ 1-2
SCSI Buses .............................................................................................................. 1-3
High-Availability..................................................................................................... 1-3
Variable Speed Blowers ................................................................................... 1-3
Power Supplies ................................................................................................. 1-3
Chapter 2
Tape Array Installation
Rack Installation ...................................................................................................... 2-1
Tools Required ................................................................................................. 2-2
Using the Template........................................................................................... 2-2
Attaching the Mounting Brackets..................................................................... 2-3
Installing the Tape Array Into the Rack ........................................................... 2-7

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Tape Array Installation
continued
Connecting the SCSI Cables.................................................................................... 2-9
SCSI Bus Speeds and Lengths.......................................................................... 2-9
I/O Module Connections................................................................................. 2-10
Applying Power ..................................................................................................... 2-10
Verifying Operation ............................................................................................... 2-11
Front Array Status LEDs ................................................................................ 2-11
Rear Array Status LEDs.................................................................................. 2-12
Driver Installation/Upgrade ................................................................................... 2-13
Storage Management Software Installation/Upgrade............................................. 2-13
Chapter 3
I/O Module
Features.................................................................................................................... 3-1
SCSI Bus Connectors............................................................................................... 3-2
Dual-Bus SCSI Address Maps................................................................................. 3-3
I/O Module Power Protection .................................................................................. 3-3
Dual-Port I/O Module Status Displays .................................................................... 3-4
Replacing an I/O module ......................................................................................... 3-5
Chapter 4
Environmental Monitoring Unit
Functions.................................................................................................................. 4-2
Status LEDs ...................................................................................................... 4-3
Temperature...................................................................................................... 4-3
Power Supplies and Blowers ............................................................................ 4-4
Status Reporting....................................................................................................... 4-4
Replacing an EMU................................................................................................... 4-5
Chapter 5
Tape Drives
Status Reporting....................................................................................................... 5-2
Drive Power ............................................................................................................. 5-2
Replacing a Tape Drive ........................................................................................... 5-2

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Chapter 6
Power and Cooling
Storage Array Power ............................................................................................... 6-2
Temperature Sensing ........................................................................................ 6-2
Blower Interface ...................................................................................................... 6-2
Blowers.................................................................................................................... 6-3
Status Reporting ...................................................................................................... 6-3
Replacing a Power Supply or Blower...................................................................... 6-4
Chapter 7
Customer Replaceable Units
Labeling................................................................................................................... 7-2
Electrostatic Discharge Protection........................................................................... 7-2
Basic Replacement Procedures................................................................................ 7-3
Replacing a Drive .................................................................................................... 7-4
Replacing a Variable Speed Blower ........................................................................ 7-5
Replacing a Power Supply....................................................................................... 7-6
Replacing the EMU ................................................................................................. 7-9
Replacing an I/O Module....................................................................................... 7-10
Appendix A
Agency Notices
Federal Communications Commission Notice ........................................................A-1
Class A Equipment ...........................................................................................A-2
Modifications....................................................................................................A-2
Cables ...............................................................................................................A-3
Canadian Notice (Avis Canadien) ...........................................................................A-3
Class A Equipment ...........................................................................................A-3
European Union Notice ...........................................................................................A-3
Japanese Notice .......................................................................................................A-4
Taiwanese Notice.....................................................................................................A-4
Index

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About This Guide
This guide is intended for use as step-by-step instructions for installation and
as a reference for operation, troubleshooting, and future upgrades for the
Compaq TA1000 Tape Drive Array.
Text Conventions
This document uses the following conventions to distinguish elements of text:
Keys Keys appear in boldface. A plus sign (+) between
two keys indicates that they should be pressed
simultaneously.
USER INPUT User input appears in a different typeface and in
uppercase.
FILENAMES File names appear in uppercase italics.
Menu Options,
Command Names,
Dialog Box Names
These elements appear in initial capital letters.
COMMANDS,
DIRECTORY NAMES,
and DRIVE NAMES
These elements appear in uppercase.
Type When you are instructed to type information, type
the information without pressing the Enter key.
Enter When you are instructed to enter information, type
the information and then press the Enter key.

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Symbols in Text
These symbols may be found in the text of this guide. They have the following
meanings.
WARNING: Text set off in this manner indicates that failure to follow directions
in the warning could result in bodily harm or loss of life.
CAUTION: Text set off in this manner indicates that failure to follow directions
could result in damage to equipment or loss of information.
IMPORTANT: Text set off in this manner presents clarifying information or specific
instructions.
NOTE: Text set off in this manner presents commentary, sidelights, or interesting points
of information.
Symbols on Equipment
The following symbols may be placed on equipment to indicate the presence
of potentially hazardous conditions:
This symbol in conjunction with any of the following symbols indicates the
presence of a potential hazard. The potential for injury exists if warnings
are not observed. Consult your documentation for specific details.
This symbol indicates the presence of hazardous energy circuits or electric
shock hazards. Refer all servicing to qualified personnel.
WARNING: To reduce the risk of injury from electric shock hazards, do not
open this enclosure. Refer all maintenance, upgrades, and servicing to
qualified personnel.
This symbol indicates the presence of electric shock hazards. The area
contains no user or field serviceable parts. Do not open for any reason.
WARNING: To reduce the risk of injury from electric shock hazards, do
not open this enclosure.

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This symbol on an RJ-45 receptacle indicates a Network Interface
Connection.
WARNING: To reduce the risk of electric shock, fire, or damage to the
equipment, do not plug telephone or telecommunications connectors into
this receptacle.
This symbol indicates the presence of a hot surface or hot component. If
this surface is contacted, the potential for injury exists.
WARNING: To reduce the risk of injury from a hot component, allow the
surface to cool before touching.
These symbols on power supplies or systems indicate the
equipment is supplied by multiple sources of power.
WARNING: To reduce the risk of injury from electric shock,
remove all power cords to completely disconnect power from
the system.
Weight in kg
Weight in lb
This symbol indicates that the component exceeds the recommended
weight for one individual to handle safely.
WARNING: To reduce the risk of personal injury or damage to the
equipment, observe local occupational health and safety requirements and
guidelines for manual material handling.
Important Safety Information
Before installing this product, read the Important Safety Information document
provided.

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Rack Stability
WARNING: To reduce the risk of personal injury or damage to the equipment,
be sure that:
■The leveling jacks are extended to the floor.
■The full weight of the rack rests on the leveling jacks.
■The stabilizing feet are attached to the rack if it is a single rack installation.
■The racks are coupled together in multiple rack installations.
■Only one component is extended at a time. A rack may become unstable if
more than one component is extended for any reason.
Getting Help
If you have a problem and have exhausted the information in this guide, you
can get further information and other help in the following locations.
Compaq Technical Support
In North America, call the Compaq Technical Phone Support Center at
1-800-OK-COMPAQ. This service is available 24 hours a day, 7 days a week.
For continuous quality improvement, calls may be recorded or monitored.
Outside North America, call the nearest Compaq Technical Support Phone
Center. Telephone numbers for worldwide Technical Support Centers are
listed on the Compaq website. Access the Compaq website at
http://www.compaq.com.
Be sure to have the following information available before you call Compaq:
■Technical support registration number (if applicable)
■Product serial number
■Product model name and number
■Applicable error messages
■Add-on boards or hardware
■Third-party hardware or software
■Operating system type and revision level

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Compaq Website
The Compaq website has information on this product as well as the latest
drivers and Flash ROM images. You can access the Compaq website at
http://www.compaq.com.
Compaq Authorized Reseller
For the name of your nearest Compaq authorized reseller:
■In the United States, call 1-800-345-1518.
■In Canada, call 1-800-263-5868.
■Elsewhere, see the Compaq website for locations and telephone
numbers.

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Chapter 1
Tape Array Overview
Introducing the Array
The Compaq TA1000 Tape Drive Array™supports up to 10 Compaq
hot-pluggable tape drives. It supports Wide-Ultra and Wide-Ultra2 SCSI
protocols. The internal bus supports only low voltage differential (LVD)
drives. The external bus (the array to the host controller bus) supports either
Wide-Ultra2 (LVD) or Wide-Ultra single-ended (SE) SCSI protocols. The
information in this guide is based on using the Wide Ultra2 LVD SCSI
protocol, the most efficient means of transferring data.
Figure 1-1. TA1000 Tape Drive Array

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1 2 3 4
Figure 1-2. Tape Array rear view
1EMU 3Power Supply
2Blower 4Dual-Port I/O Module
WARNING: An assembled enclosure (all elements installed) weighs more than
60 lbs (27.2 kg).
Compaq requires a minimum of two individuals to install an empty enclosure
into a rack.
Tape Array Features
The major elements required for proper operation of the tape array include:
■A hot-pluggable environmental monitoring unit (EMU)
■Two hot-pluggable power supplies
■Two hot-pluggable blowers
■A dual-bus Ultra2 I/O module
■A hot-pluggable tape drive in each bay
The TA1000 Tape Drive Array supports up to ten 1.6-inch, Compaq hot-
pluggable tape drives. The array is a rack-mountable device that requires a 3U
vertical opening (5.25-inches) where a “U” is 1.75 inches.
CAUTION: Removing a drive significantly changes the airflow within the tape
array and could cause overheating. Therefore, always replace it as soon as
possible.

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The hot-pluggable tape array elements are replaceable without stopping SCSI
bus data transfers. The TA1000 Tape Drive Array is designed to support only
Compaq hot-pluggable tape drives.
A full description of the individual elements and their functions can be found
in the following chapters, including removal and replacement procedures.
SCSI Buses
The tape array supports Wide-Ultra2 SCSI, wide (16-bit) internal LVD buses.
Depending on the host interface, the external SCSI bus (the bus between the
I/O module and the host) can be either Wide Ultra or Wide-Ultra2, LVD or
SE. The SCSI bus type determines the bus length, speed, and maximum cable
length. Each tape array has two internal SCSI buses with up to five devices on
each bus. The I/O module has 68-pin very high density cable (VHDCI)
connectors.
For detailed information about the SCSI buses, see Chapter 2 and Chapter 3.
High-Availability
The high-availability features of the tape array allow the array to continue to
function even if a variable speed blower or power supply fails.
Variable Speed Blowers
All tape arrays have two variable speed blowers. In all configurations, the
failure of one blower automatically causes the other blower to operate at a
higher speed. This ensures that the failure of a single blower does not disable
the tape array.
Power Supplies
The redundant power supply configuration (two power supplies) prevents the
failure of a single power supply from disabling the enclosure. A single power
supply can support all enclosure operations.
CAUTION: Due to airflow considerations, if a power supply fails, do not remove
it until a replacement power supply is available.

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Chapter 2
Tape Array Installation
This chapter describes:
1. Installing a TA1000 Tape Drive Array into a rack.
2. Connecting the SCSI cables.
3. Applying power to the array.
4. Verifying proper operation.
5. Installing/Upgrading drivers.
Rack Installation
Use the following procedures to install your tape array into the rack.
WARNING: To reduce the risk of personal injury or damage to the equipment,
be sure that:
■The leveling jacks are extended to the floor.
■The full weight of the rack rests on the leveling jacks.
■The stabilizing feet are attached to the rack if it is a single rack installation.
■The racks are coupled together in multiple rack installations.
■Only one component is extended at a time. A rack may become unstable if
more than one component is extended for any reason.

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Tools Required
■No. 2 Phillips screwdriver
■3/8-inch nut driver
Using the Template
Use the rack template to mark the rail attachment points on the front and rear
of the rack.
Figure 2-1. Using the rack template

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Attaching the Mounting Brackets
Attach the two mounting brackets.
IMPORTANT: Some Compaq racks use a square-hole rail design, while others use a
round-hole rail design. Where indicated, follow the steps for each rack type.
1. For square-hole racks only: Install two alignment clips 1over the round
tabs on the front of each mounting bracket.
2. For square-hole racks only: Install one alignment clip 2over the round
tab on the rear of each mounting bracket.
1
2
Figure 2-2. Attaching the alignment clips (for square-hole racks only)

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3. If necessary, loosen the three screws in the middle of the mounting
bracket to adjust the length of the bracket to fit your rack.
4. For square-hole racks only: Position the left mounting bracket 1just
behind the front vertical rail, aligning the middle two mounting bracket
holes with the rail holes previously marked using the template. Be sure
the alignment clip flanges are positioned within the mounting rail square
holes.
1
Figure 2-3. Square-hole rack bracket alignment

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5. For round-hole racks only: Extend the mounting bracket through the
rear vertical rail holes. Be sure that the mounting bracket fingers are
inserted into the corresponding vertical inner rail holes.
1
Figure 2-4. Round-hole rack bracket alignment
IMPORTANT: The mounting bracket must be parallel from front to rear before you secure
it to the rack. The left and right mounting brackets must be parallel.

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6. Secure the bracket to the rear vertical rail using two washers and two
Kep nuts 1.
7. Secure the mounting bracket to the front vertical rail using two pan head
SEMS screws 2(10-32 x 5/8 in).
8. Tighten the three mounting bracket screws 3.
2
3
1
Figure 2-5. Inserting the screws
9. Repeat for the other mounting bracket.

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Installing the Tape Array Into the Rack
CAUTION: Enclosure weight, with all elements installed exceeds 60 lbs
(27.2kg). To prevent personal injury, at least two people are required to install
the tape array safely.
WARNING: To reduce the risk of personal injury or damage to the equipment:
■Observe local Occupational Safety guidelines for lifting heavy equipment.
■Obtain adequate assistance to lift and stabilize the chassis during
installation or removal.
■Remove all pluggable power supplies and disk drives to reduce the weight
of the chassis.
■The unit will be unstable when not mated with the rails.
CAUTION: Keep the tape array parallel to the floor while sliding it into the
mounting brackets to prevent damaging the chassis and ease insertion.