Page 1
TA1000 Tape Drive Array
Reference Guide
First Edition (June 2000)
Part Number 189904-001
Compaq Computer Corporation
Page 2
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
Page 3
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
Page 4
iv
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
Page 5
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
v
Index
Page 6
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:
About This Guide
Keys
USER INPUT
FILENAMES
Menu Options,
Command Names,
Dialog Box Names
COMMANDS,
DIRECTORY NAMES,
and DRIVE NAMES
Type When you are instructed to
Enter When you are instructed to
Keys appear in boldface. A plus sign (+) between
two keys indicates that they should be pressed
simultaneously.
User input appears in a different typeface and in
uppercase.
File names appear in uppercase italics.
These elements appear in initial capital letters.
These elements appear in uppercase.
the information
the information and then press the
without
pressing the
information, type
type
Enter
information, type
enter
Enter
key.
key.
Page 7
viii Compaq TA1000 Tape Drive Array Reference Guide
Symbols in Text
These symbols may be found in the text of this guide. They have the following
meanings.
WARNING:
in the warning could result in bodily harm or loss of life.
CAUTION:
could result in damage to equipment or loss of information.
IMPORTANT:
instructions.
Text set off in this manner presents commentary, sidelights, or interesting points
NOTE:
of information.
Text set off in this manner indicates that failure to follow directions
Text set off in this manner presents clarifying information or specific
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.
Text set off in this manner indicates that failure to follow directions
This symbol indicates the presence of hazardous energy circuits or electric
shock hazards. Refer all servicing to qualified personnel.
WARNING:
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:
not open this enclosure.
To reduce the risk of injury from electric shock hazards, do not
To reduce the risk of injury from electric shock hazards, do
Page 8
About This Guide ix
This symbol on an RJ-45 receptacle indicates a Network Interface
Connection.
Weight in kg
Weight in lb
WARNING:
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:
surface to cool before touching.
This symbol indicates that the component exceeds the recommended
weight for one individual to handle safely.
WARNING:
equipment, observe local occupational health and safety requirements and
guidelines for manual material handling.
To reduce the risk of electric shock, fire, or damage to the
To reduce the risk of injury from a hot component, allow the
These symbols on power supplies or systems indicate the
equipment is supplied by multiple sources of power.
WARNING:
remove all power cords to completely disconnect power from
the system.
To reduce the risk of personal injury or damage to the
To reduce the risk of injury from electric shock,
Important Safety Information
Before installing this product, read the
provided.
Important Safety Information
document
Page 9
x Compaq TA1000 Tape Drive Array Reference Guide
Rack Stability
WARNING:
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
To reduce the risk of personal injury or damage to the equipment,
.
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
■
Page 10
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.
About This Guide xi
.
Page 11
1-1
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.
Chapter
1
Tape Array Overview
Figure 1-1. TA1000 Tape Drive Array
Page 12
1-2 Compaq TA1000 Tape Drive Array Reference Guide
1 2
Figure 1-2. Tape Array rear view
EMU
1
Blower
2
WARNING:
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
■
3 4
Power Supply
3
Dual-Port I/O Module
4
An assembled enclosure (all elements installed) weighs more than
A hot-pluggable tape drive in each bay
■
The TA1000 Tape Drive Array supports up to ten 1.6-inch, Compaq hotpluggable 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:
array and could cause overheating. Therefore, always replace it as soon as
possible.
Removing a drive significantly changes the airflow within the tape
Page 13
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
Tape Array Overview 1-3
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:
it until a replacement power supply is available.
Due to airflow considerations, if a power supply fails, do not remove
Page 14
2-1
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.
Chapter
2
Rack Installation
Use the following procedures to install your tape array into the rack.
WARNING:
be sure that:
■
■
■
■
■
To reduce the risk of personal injury or damage to the equipment,
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.
Page 15
2-2 Compaq TA1000 Tape Drive Array Reference Guide
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
Page 16
Attaching the Mounting Brackets
Attach the two mounting brackets.
Tape Array Installation 2-3
IMPORTANT:
round-hole rail design. Where indicated, follow the steps for each rack type.
Some Compaq racks use a square-hole rail design, while others use a
1. For square-hole racks only: Install two alignment clips 1 over the round
tabs on the front of each mounting bracket.
2. For square-hole racks only: Install one alignment clip 2 over the round
tab on the rear of each mounting bracket.
1
2
Figure 2-2. Attaching the alignment clips (for square-hole racks only)
Page 17
2-4 Compaq TA1000 Tape Drive Array Reference Guide
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 1 just
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
Page 18
Tape Array Installation 2-5
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:
it to the rack. The left and right mounting brackets must be parallel.
The mounting bracket must be parallel from front to rear before you secure
Page 19
2-6 Compaq TA1000 Tape Drive Array Reference Guide
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.
3
2
1
Figure 2-5. Inserting the screws
9. Repeat for the other mounting bracket.
Page 20
Installing the Tape Array Into the Rack
Tape Array Installation 2-7
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.
Page 21
2-8 Compaq TA1000 Tape Drive Array Reference Guide
1. Position the tape array on the mounting brackets with the Compaq logo
in the upper left corner, and slide it in until the tape array flanges 1
contact with the front vertical rails.
2. Once the tape array is fully inserted, verify that both tape array front
flanges contact the rack vertical rail and the rear of the tape array is
properly seated in the mounting brackets.
3. Secure the enclosure using the attached captive thumbscrews.
1
Figure 2-6. Installing the tape array into the rack
Page 22
Connecting the SCSI Cables
To connect the enclosure to a host adapter or SCSI controller, connect the
cables to the I/O module. The I/O module has 68-pin, very high density cable
interconnect (VHDCI) connectors.
SCSI Bus Speeds and Lengths
The maximum bus and cable lengths are a function of the SCSI host controller
or drives attached (LVD or SE). Table 2–1 defines the maximum bus speed,
and bus and cable length based upon the SCSI bus type.
Tape Array Installation 2-9
Table 2-1
Bus Specifications
Termination
Device
LVD Wide Ultra SCSI 40 Mb/s 12 m (39.4 ft)
LVD Wide Ultra2 SCSI 80 Mb/s 12 m (39.4 ft)
Single-ended Wide Ultra SCSI 40 Mb/s 3.7 m (12 ft)
Bus Type
Host Controller
Max. speed Max Bus/cable
length
Page 23
2-10 Compaq TA1000 Tape Drive Array Reference Guide
I/O Module Connections
Figure 2-7 shows the connections for a dual-bus configuration using the
dual-port I/O module.
Figure 2-7. Dual-port I/O module SCSI cable connectors
Latch
1
SCSI Bus A connector
2
Status LEDs
3
SCSI Bus B connector
4
1
2
3
4
To attach the SCSI bus cable:
1. Align the D-shaped cable connector with the D-shaped I/O module
connector and then firmly seat the cable connector on the module
connector.
2. Tighten the thumbscrews to connect the cable.
Applying Power
There are no tape array power control switches. Connecting an AC power cord
from a power source to the power supply is all that is required.
CAUTION:
any other tool to tighten the thumbscrews.
To avoid damaging the cable connector do not use a screwdriver or
Page 24
Verifying Operation
All the devices in the tape array begin operating when power is applied. Check
the tape array status LED indicators in the front, lower right corner. If the
display is not exactly as shown there is an error condition. Check the drive
status LEDs on the front, and the EMU, power supplies, blowers, and I/O
module status LEDs on the rear to verify proper operation.
Front Array Status LEDs
The array status LEDs, are located in the front, lower-right corner of the
enclosure.
Tape Array Installation 2-11
Figure 2-8. Location of LED indicator lights
Flashing On Off
Page 25
2-12 Compaq TA1000 Tape Drive Array Reference Guide
Symbol Meaning
Rear Array Status LEDs
Figure 2-11 shows the location of the rear array status LEDs.
Table 2-2
Status LED symbols
Tape array status (flashing – green LED)
Tape array power (On – green LED)
Tape array fault (Off – amber LED)
1 2 2 3 4 5
Figure 2-9. Typical rear status LED indicators
EMU
1
Power supply/blower
2
I/O module power
3
4
5
I/O Module SCSI bus A
I/O Module SCSI bus B
Page 26
Driver Installation/Upgrade
The following drivers and utilities are required for proper operation of the
TA1000 Tape Drive Array:
Compaq System Management Drivers
■
Compaq PCI Hot Plug Utility
■
Compaq Integration Management Display Utility
■
Compaq SCSI Controllers
■
To install or upgrade these software items:
1. Insert the Compaq SmartStart and Support Software CD, version 4.7 or
greater (located in the Storage Utility Software kit that came with your
unit).
2. Go to the CPQSUPSW (Compaq Supplement Software) directory.
3. Choose your operating system.
4. Proceed with appropriate operating system specific procedures.
Tape Array Installation 2-13
Storage Management Software Installation/Upgrade
For storage management software, refer to the third-party backup solution
software that shipped with your unit.
Page 27
3-1
Chapter
I/O Module
This chapter discusses the operation and function of the dual-bus tape array
pluggable I/O module (commonly referred to as the “module”).
3
Features
Figure 3-1. Dual-bus I/O module
The I/O modules are pluggable elements. Replacing either an I/O module or a
cable requires stopping all data transfers to prevent the loss of data.
Page 28
3-2 Compaq TA1000 Tape Drive Array Reference Guide
The I/O module connects the tape array to the host controller through a 68-pin,
VHDCI connector and a SCSI cable. This I/O module can support a maximum
of 10 drives in a single tape array.
The dual-port I/O module has two SCSI buses. Up to five devices are on SCSI
bus A and up to five devices are on SCSI bus B. This configuration requires
two controllers or host adapters.
SCSI Bus Connectors
The I/O module label identifies each 68-pin, VHDCI SCSI bus connector with
a label, as shown in Figure 3-2.
Figure 3-2. I/O module symbol label
Page 29
Dual-Bus SCSI Address Maps
The dual-port I/O module assigns a SCSI address to each drive bay in the
enclosure (see Table 3-2).
Table 3-1
Dual-Bus SCSI IDs
I/O Module 3-3
Bay
12345678910
SCSI Bus A SCSI Bus BSCSI ID
00 01 02 03 04 00 01 02 03 04
I/O Module Power Protection
A voltage sensor in the I/O module detects overcurrent conditions. Should this
error occur, the sensor disconnects the voltage from the I/O module and the
power LED goes Off. This disables the I/O module until one of the following
conditions occurs:
The overcurrent condition no longer exists.
■
The defective I/O module is replaced.
■
Page 30
3-4 Compaq TA1000 Tape Drive Array Reference Guide
Dual-Port I/O Module Status Displays
Table 3-1 describes the dual-port I/O module status displays.
Dual-Port I/O Module Status Displays
LED is On LED is Off LED is Flashing
When the I/O module is operational and the external SCSI bus is functional:
When the I/O module is operational and the external SCSI bus is nonfunctional:
When the I/O module is nonoperational:
Recommended Corrective Action:
1. Check power supplies for proper operation. Replace if defective.
2. Replace I/O module.
SCSI bus A is functional (LED On)
SCSI bus B is functional (LED On)
I/O module power present and I/O module locate function is active (LED
Flashing)
I/O module power present (LED On)
SCSI bus A functional (LED On)
SCSI bus B functional (LED On)
I/O module power present (LED On)
SCSI bus A nonfunctional (LED Off)
SCSI bus B functional (LED On)
I/O module power present (LED On)
SCSI bus A nonfunctional (LED On)
SCSI bus B functional (LED Off)
I/O module power present (LED On)
Backplane terminator A nonfunctional (LED Off)
Backplane terminator B nonfunctional (LED Off)
No I/O module power (All LEDs Off)
I/O module nonoperational
Table 3-2
Page 31
Replacing an I/O module
To replace an I/O module, complete the procedures outlined in Chapter 7,
“Customer Replaceable Units.”
I/O Module 3-5
Page 32
4-1
Chapter
4
Environmental Monitoring Unit
This chapter discusses the Environmental Monitoring Unit (see Figure 4-1).
The EMU is an integral part of every tape array enclosure. This element
performs several functions, including monitoring the enclosure operation,
detecting and indicating errors, and displaying the EMU and enclosure status.
1
Figure 4-1. EMU
When the green LED 1 is flashing slowly, the EMU is operational. If it is on
or off, there is an internal problem. When flashing rapidly, the EMU is
operational and there is a single-ended drive installed in the tape array (see
Figure 4-4).
Page 33
4-2 Compaq TA1000 Tape Drive Array Reference Guide
The EMU mounts in the bay at the left rear 1 of the enclosure
(see Figure 4-2).
1
Figure 4-2. EMU location
Functions
EMU functions include:
Assigning device SCSI addresses (in conjunction with the I/O module)
■
Monitoring the enclosure operation
■
Detecting and reporting enclosure and element errors
■
Displaying the EMU and enclosure status
■
Controlling the LEDs
■
The enclosure functions and operations that the EMU monitors include:
Temperature
■
Power Supplies
■
Blowers
■
EMU internal functions
■
Page 34
Status LEDs
Environmental Monitoring Unit 4-3
The EMU controls the three enclosure status LEDs (see Figure 4-3) that
display the status of the EMU and the enclosure, the enclosure power, and an
enclosure fault.
Figure 4-3. Front status LEDs
The EMU also monitors the power supply and blower LEDs, located on the
rear of the enclosure. The operation of these LEDs is described in the chapters
about each element.
Temperature
The EMU monitors the internal temperature using sensors.
■
■
■
When the tape array internal temperature is 45°C (113°F) or more, the
EMU turns On the amber tape array Fault LED.
A power supply automatically shuts down when the internal power
supply temperature exceeds 85°C (180°F).
When Compaq Insight Manager is installed, it can report an alarm
condition when the internal temperature reaches 50°C (122°F).
Page 35
4-4 Compaq TA1000 Tape Drive Array Reference Guide
Power Supplies and Blowers
The green LED on the power supply assembly is On when both the power
supply and the blower are operational. When there is either a power supply or
blower fault, the EMU turns Off both the green power supply and the
enclosure power LEDs. See Chapter 6, “Enclosure Power and Cooling,” for a
description of the operation of the power supply LED.
Status Reporting
The green EMU status displays the EMU status and identifies the drive types,
either LVD or single-ended. This LED flashes at two different rates (see
Figure 4-4).
On Off On Off
Single-Ended Drive Installed
On Off On Off On Off On Off
Figure 4-4. EMU LED display
During normal operation it flashes at a rate of approximately once per
■
second. This is the “heartbeat.” The EMU and Enclosure LED on the
front of the enclosure (see Figure 4-3) display is identical.
Heartbeat
When a single-ended drive is installed in the enclosure the LED is “on”
■
twice per second.
Page 36
Environmental Monitoring Unit 4-5
Table 4-1
EMU LED Status Displays
LED is On LED is Off LED is Flashing
When the EMU and the tape array are operational:
When flashing once per second (see heartbeat in Figure 4-4) both the EMU and the
tape array are operational.
When flashing twice per second (see single-ended drive in Figure 4-4) both the EMU
and the tape array are operational but there is a single-ended drive installed..
When there is an EMU or tape array error:
There is an internal EMU problem.
Either there is no enclosure power or there is an internal EMU problem.
Recommended Corrective Action:
1. Check power supplies for proper operation. Replace if defective.
2. Replace EMU.
Replacing an EMU
To replace an EMU, complete the procedures outlined in Chapter 7,
“Customer Replaceable Units.”
Page 37
5-1
Chapter
5
Tape Drives
The storage array supports Compaq hot-pluggable, Wide-Ultra2 SCSI, LVD
tape drives. This chapter describes the tape drive features, functions, and
characteristics. The 10-tape array supports 1.6-inch, hot-pluggable drives (see
Figure 5-1).
CAUTION:
array and could cause overheating. Therefore, always replace it as soon as
possible.
Never remove more than one drive from an operating enclosure at the same
time.
Removing a drive significantly changes the airflow within the tape
1
2
3
4
Figure 5-1. Tape Drive
Page 38
5-2 Compaq TA1000 Tape Drive Array Reference Guide
Status Reporting
All drives have three status LEDs (see Figure 5-1) to define the operational
status of the drive. To determine the drive status you must observe all three
LEDs (see Table 5-1).
Tape Drive LED Status
Callout Icon Description
Table 5-1
1
2
3
4
Refer to your tape drive manual for additional information regarding the status
LEDs.
Drive Power
Backplane overcurrent sensors monitor the +5 VDC and +12VDC drive
voltages. When there is a drive overcurrent condition the sensor disconnects
the voltage from the drive. This disables the drive, ensuring that no data is
written to it. The drive is disabled until one of the following conditions occurs:
The defective drive is replaced.
■
The overcurrent condition no longer exists.
■
Replacing a Tape Drive
To replace a tape drive, see the procedures outlined in Chapter 7, “Customer
Replaceable Units.”
Busy LED
Tape LED
Status LED
Eject Button
CAUTION:
array and could cause overheating. Therefore, always replace it as soon as
possible.
Removing a drive significantly changes the airflow within the tape
Page 39
6-1
Chapter
Power and Cooling
This chapter describes the functions and general operation of the tape array
power supply and blowers. See Figure 6-1 for major component locations.
NOTE:
Compaq provides country-specific power cords with each array.
1
6
5
6
2
3
Figure 6-1. Power and blower elements
Power supply element
1
AC input connector
2
Module latch
3
4
5
6
4
5
4
Power supply and blower status LED
Blower tabs
Blower element
Page 40
6-2 Compaq TA1000 Tape Drive Array Reference Guide
Storage Array Power
The power supply and blower assembly mount in the rear of the enclosure.
The power supply is auto-ranging and operates on an AC input voltage of 100
to 242 VAC ±10%, 50 to 60 Hz ± 5% (90 to 264 VAC, 47 to 63 Hz).
The DC outputs of this power supply are:
+5.1 VDC for the EMU, I/O module, backplane, and drives.
■
+12.1 VDC for the drives.
■
+12.5 VDC for the blower.
■
The power supply circuitry provides protection against:
Overloads
■
Short circuits
■
Thermal protection against overheating
■
Power supply status and diagnostic information is reported to the EMU with
voltage, current, and temperature signals.
Temperature Sensing
The power supply temperature sensor provides a temperature range signal to
the EMU. The EMU can use this signal to set the blower speed. The power
supply internal temperature can also set the speed of the blower. The higher
the power supply temperature, the faster the speed of the blower. Should the
power supply temperature exceed a preset value, the power supply is shut
down.
Blower Interface
The blower mounts on the rear of the power supply. A power supply connector
is the interface between the blower and the enclosure. The interface signals
include:
Blower speed control to the blower
■
Blower speed to the EMU through the power supply
■
Power supply high speed enable
■
Blower operating voltage
■
Page 41
Blowers
Power and Cooling 6-3
The power supply-mounted blowers cool the enclosure by circulating air
through the enclosure and elements. The rate at which air moves (the airflow)
determines the amount of cooling. This airflow is a function of blower speed
(rpm). These blowers, under the control of the EMU or the associated power
supply, can operate at multiple speeds. This ensures that when the enclosure
temperature changes the blowers can automatically adjust the airflow.
If a blower operates too slowly or stops (a “blower failure”) internal circuitry
automatically causes the operational blower to operate at a higher speed.
Status Reporting
The green status LED on the blower displays the status of both the power
supply and the blower. See Table 6-1 for definitions of the LED displays.
LED is On LED is Off LED is Flashing
When the blower and the power supply are operational
Both the power supply and the blower are operational.
Either the power supply or the blower locate function is active.
When either the blower or the power supply is nonoperational:
Either the power supply or the blower is nonoperational. When there is a blower
problem, the other blower runs at a higher speed.
Recommended Corrective Action
1. Check the power supplies for proper operation. Replace if defective.
2. Check the blower for proper operation. Replace if defective.
WARNING:
immediately when power is removed. Avoid touching the rotating blades when
removing the blower.
The blower blades rotate at a high speed and do not stop
Table 6-1
Power Supply and Blower Status Displays
:
Page 42
6-4 Compaq TA1000 Tape Drive Array Reference Guide
Replacing a Power Supply or Blower
To replace a power supply or blower use the procedure described in Chapter 7,
“Customer Replaceable Units.”
NOTE:
As long as there is one operational power supply, you can replace a defective
power supply without stopping data transfers. This is true whether the power supply has
failed or is failing.
Page 43
Chapter
Customer Replaceable Units
Each replacement CRU (Customer Replaceable Unit) contains detailed
replacement instructions. This chapter describes the general replacement
procedures.
Table 7-1
CRU Replacement Methods
Device Method
Drive Hot-pluggable
EMU Hot-pluggable
7
Blower Hot-pluggable
I/O Module Pluggable
Replacing an I/O module requires stopping all
data transfers
Power Supply-Dual Hot-pluggable
In a dual redundant power supply configuration,
the array is not disabled when the power supply
fails.
SCSI Bus Cables Pluggable
Connecting or disconnecting a SCSI bus cable
requires stopping all data transfers
Page 44
7-2 Compaq TA1000 Tape Drive Array Reference Guide
Labeling
To order a CRU, you must use the Compaq spare part number that appears on
the CRU product label (see Figure 7–1). The first six characters identify the
CRU. The last three define the revision level.
Figure 7-1. Typical CRU product label
Electrostatic Discharge Protection
When you replace a CRU, you must take precautions to prevent the possibility
of electrostatic discharge (ESD) damaging sensitive electronic items.
Always transport and store CRUs in a static-free container.
■
Do not remove the CRU from the static-free container until you are
■
ready to install it.
Avoid touching the CRU connector pins, leads, or circuitry.
■
Page 45
Basic Replacement Procedures
The following procedures apply to all CRU replacement procedures.
Customer Replaceable Units 7-3
CAUTION:
NOT require halting all data transfers on the SCSI bus.
Replacing a pluggable I/O module or a SCSI cable always requires halting all
data transfers on the SCSI bus.
Some controllers may require removing power when replacing an I/O module or
SCSI cable.
IMPORTANT:
CAUTION:
or circuitry.
Remove the defective CRU from the enclosure.
1.
Remove the replacement CRU from the static-free container. Check the
2.
The hot-pluggable power supplies, blowers, EMU, and drives DO
Always transport and store CRUs in a static-free container.
To prevent ESD damage, never touch the CRU connector pins, leads,
label to be sure that it is a compatible replacement (see Figure 7-1).
Align the CRU with the enclosure guide slots.
3.
Slide the CRU into the enclosure until it is against the backplane
4.
connector.
Fully seat the CRU in the enclosure and verify that it is operating
5.
properly.
Place the defective CRU in the static-free container for shipment.
6.
Page 46
7-4 Compaq TA1000 Tape Drive Array Reference Guide
Replacing a Drive
If a tape drive fails, replace it using the following procedures.
CAUTION:
the enclosure to overheat.
To prevent overheating and ensure proper operation, Compaq recommends
installing a tape drive of equal or greater capacity, or a drive blank, as soon as
possible.
Eject media, if possible.
1.
Push up and in on the ejector button 1 and pull out on the handle 2.
2.
Figure 7-2. Removing a tape drive
Pull the drive out until it is disconnected from the backplane connector.
3.
Never remove more than one tape drive at a time, as this can cause
2
1
Insert the replacement drive into the tape array until it is seated firmly
4.
against the backplane connector.
Observe the drive status LEDs (see Chapter 6) to ensure the replacement
5.
drive is functioning properly.
Page 47
Replacing a Variable Speed Blower
NOTE:
The power supply design ensures that removing a blower does not change the
airflow within the enclosure. However, do not remove a blower until the replacement
blower is available.
Customer Replaceable Units 7-5
WARNING:
immediately when power is removed. Avoid touching the rotating blades when
removing the blower.
To remove the blower from the power supply, push in on the two blower
1.
The blower blades rotate at a high speed and do not stop
tabs 1 while pulling on the blower element.
1
1
Figure 7-3. Location of blower tabs
CAUTION:
Only press on the outer edge of the blower when installing the blower.
Pressing on the center section of the blower can damage the blades.
Page 48
7-6 Compaq TA1000 Tape Drive Array Reference Guide
Align the blower guide post 2 with power supply connector 1. Slide
2.
the replacement blower 3 into blower base until the tabs 4 snap into
place.
1
4
2
Figure 7-4. Blower replacement
Make sure that the blower starts operating immediately and the blower
3.
LED is On.
Replacing a Power Supply
CAUTION:
the tape array. The system could shut down because of overheating unless the
power supply is replaced within 5 minutes.
NOTE:
Replacement power supply assemblies do not include a variable speed blower.
Therefore you must remove the operational blower from the defective power supply and
install it on the new supply.
To replace a power supply or a blower mounting assembly:
Disconnect the AC power cord from the defective supply.
1.
Removing a power supply significantly changes the airflow within
4
3
Page 49
Customer Replaceable Units 7-7
While lifting the power supply port-colored module latch 1 up, grasp
2.
the blower element 2 and pull the defective power supply out of the
enclosure.
2
1
Figure 7-5. Removing a power supply
Install the replacement supply by lifting the power supply module latch
3.
1 up and pushing the blower base 2 in until the assembly is fully
seated in the enclosure.
Figure 7-6. Inserting a new power supply
1 2
Page 50
7-8 Compaq TA1000 Tape Drive Array Reference Guide
Remove the operational blower from the defective power supply by
4.
pushing the two blower tabs 1 in and pulling the blower element to the
rear.
1
Figure 7-7. Removing the blower
1
CAUTION:
Only press on the outer edge of the blower when installing the blower.
Install the blower on the replacement supply by aligning the blower
5.
Pressing on the center section of the blower can damage the blades.
guide post 2 with power supply connector 1. Slide the blower 3 into
blower base until the tabs 4 snap into place.
4
1
2
4
Figure 7-8. Installing the replacement blower
3
Page 51
Connect the AC power cord and observe the power supply for proper
6.
operation.
! The blower starts operating immediately.
! The blower LED is ON.
! The blower on the other supply no longer operates at high speed.
Replacing the EMU
NOTE:
Removing an EMU significantly changes the airflow within the tape array and
could cause overheating. Therefore, always replace it as soon as possible.
Grasp the EMU handle and pull the EMU out of the tape array.
1.
Customer Replaceable Units 7-9
Figure 7-9. EMU
Insert the replacement EMU into the tape array.
2.
Press the EMU firmly in to seat it in the connector. The EMU should
3.
start operating immediately.
Page 52
7-10 Compaq TA1000 Tape Drive Array Reference Guide
Replacing an I/O Module
CAUTION:
is being transferred causes the loss of data. To prevent errors, always stop all
data transfers on the SCSI bus before removing or installing an I/O module or
SCSI cable.
Some controllers may require removing power when replacing an I/O module or
SCSI cable.
CAUTION:
tape array, and could cause overheating. Therefore, always replace it as soon as
possible.
Connecting or disconnecting an I/O module or SCSI cable while data
Removing an I/O module significantly changes the airflow within the
To replace an I/O module:
Make sure that a current system back up is available.
1.
When the controller does not support replacing an I/O module with
2.
power applied, remove power from the tape array.
Stop all data transfers.
3.
Disconnect the SCSI cables from the I/O module connector 3. Label the
4.
cables as you remove them.
While grasping the I/O module handle, press down on the I/O module
5.
latch 1 and pull the I/O module out of the tape array.
1
2
3
Figure 7-10. I/O module replacement
Slide the replacement I/O module into the enclosure.
6.
Page 53
Customer Replaceable Units 7-11
While grasping the I/O module handle, press the I/O module latch 1
7.
down and push the I/O module into the enclosure until it is fully seated.
Connect the cable connector to the same connectors (see Step 4).
8.
If power was removed in Step 2, apply it to the enclosure.
9.
10. Activate the SCSI bus and observe the LEDs to verify that the I/O
module is functioning properly.
Page 54
Federal Communications Commission Notice
Part 15 of the Federal Communications Commission (FCC) Rules and
Regulations has established Radio Frequency (RF) emission limits to provide
an interference-free radio frequency spectrum. Many electronic devices,
including computers, generate RF energy incidental to their intended function
and are, therefore, covered by these rules. These rules place computers and
related peripheral devices into two classes, A and B, depending upon their
intended installation. Class A devices are those that may reasonably be
expected to be installed in a business or commercial environment. Class B
devices are those that may reasonably be expected to be installed in a
residential environment (personal computers, for example). The FCC requires
devices in both classes to bear a label indicating the interference potential of
the device as well as additional operating instructions for the user. )
Appendix
A
Agency Notices
The rating label on the device shows which class (A or B) the equipment falls
into. Class B devices have an FCC logo or FCC ID on the label. Class A
devices do not have an FCC ID on the label. Once the class of the device is
determined, refer to the following corresponding statement.
Page 55
A-2 Compaq TA1000 Tape Drive Array Reference Guide
Class A Equipment
This equipment has been tested and found to comply with the limits for a Class
A digital device, pursuant to Part 15 of the FCC Rules. These limits are
designed to provide reasonable protection against harmful interference when
the equipment is operated in a commercial environment. This equipment
generates, uses, and can radiate radio frequency energy and, if not installed
and used in accordance with the instructions, may cause harmful interference
to radio communications. Operation of this equipment in a residential area is
likely to cause harmful interference, in which case the user will be required to
correct the interference at personal expense.
Declaration of Conformity for Products Marked
with the FCC logo – United States Only
This device complies with Part 15 of the FCC Rules. Operation is subject to
the following two conditions: (1) this device may not cause harmful
interference, and (2) this device must accept any interference received,
including interference that may cause undesired operation.
For questions regarding your product, contact:
Compaq Computer Corporation
P. O. Box 692000, Mail Stop 530113
Houston, Texas 77269-2000
or call 1-800- 652-6672 (1-800-OK COMPAQ). (For continuous quality
improvement, calls may be recorded or monitored.)
For questions regarding this FCC declaration, contact:
Compaq Computer Corporation
P. O. Box 692000, Mail Stop 510101
Houston, Texas 77269-2000
or call (281) 514-3333.
To identify this product, refer to the Part, Series, or Model number found on
the product.
Modifications
The FCC requires the user to be notified that any changes or modifications
made to this device that are not expressly approved by Compaq Computer
Corporation may void the user's authority to operate the equipment.
Page 56
Cables
Connections to this device must be made with shielded cables with metallic
RFI/EMI connector hoods in order to maintain compliance with FCC Rules
and Regulations.
Canadian Notice (Avis Canadien)
Class A Equipment
This Class A digital apparatus meets all requirements of the Canadian
Interference-Causing Equipment Regulations.
Cet appareil numérique de la classe A respecte toutes les exigences du
Règlement sur le matériel brouilleur du Canada.
European Union Notice
Products with the CE Marking comply with both the EMC Directive
(89/336/EEC) and the Low Voltage Directive (73/23/EEC) issued by the
Commission of the European Community.
Agency Notices A-3
Compliance with these directives implies conformity to the following
European Norms (in brackets are the equivalent international standards):
EN55022 (CISPR 22) - Electromagnetic Interference
■
EN50082-1 (IEC801-2, IEC801-3, IEC801-4) - Electromagnetic
■
Immunity
EN60950 (IEC950) - Product Safety
■
Page 57
A-4 Compaq TA1000 Tape Drive Array Reference Guide
Japanese Notice
Taiwanese Notice
Page 58
Index
A
AC
input connector 6-1
input voltage 6-2
address maps 3-3
airflow 5-1, 5-2, 6-3
alignment clips, attaching 2-3
B
blowers
element 6-1
failure 6-3
location of 1-2
purpose 6-3
replacing 7-5
speed 6-2
status LEDs 6-3
tabs 6-1
brackets
mounting
adjusting length 2-4
aligning 2-4, 2-5
attaching 2-3
securing to the rack 2-6
C
cables
FCC compliance
statement A-3
SCSI, attaching 2-10
Canadian Notice (Avis
Canadien) A-3
CE Marking A-3
Compaq
authorized reseller xi
Insight Manager 4-3
website xi
connectors
SCSI bus 3-2
Customer Replaceable Unit (CRU)
label 7-2
methods 7-1
D
data transfers, halting 6-4, 7-3
DC
output 6-2
Declaration of Conformity A-2
drivers, required 2-13
dual-port I/O module See I/O
module
Page 59
ii Compaq TA1000 Tape Drive Array Reference Guide
E
electric shock
icon viii
symbol viii
electrostatic discharge 7-2
EMU
functions 4-2
illustrated 4-1
items monitored 4-2, 4-3
LED
flashing rapidly 4-1, 4-4
flashing slowly 4-1, 4-4
location of 2-12
location of 1-2
replacing 7-9
European Union Notice A-3
exclamation point icon viii
F
features
high availability 1-3
I/O module 3-1
tape array 1-2
Federal Communications
Commission (FCC)
Class A compliance
notice A-2
notice A-1
functions
EMU 4-2
H
hazard symbol viii
hazardous conditions symbols on
equipment viii
hazardous energy circuits
symbol viii
help
additional sources x
Compaq authorized resellers,
telephone numbers xi
Compaq website xi
technical support telephone
numbers x
high availability features 1-3
hot-pluggable devices 7-1
http://www.compaq.com xi
I
I/O module
connectors
defined 2-9
location 2-10
controller connection 3-2
controller requirement 3-2
drives supported 3-2
features 3-1
illustrated 3-1
location of 1-2
power LED 2-12
power protection 3-3
replacing 3-1, 7-10
SCSI bus configuration 3-2
SCSI bus LED 2-12
icons
on equipment viii
tape drive, defined 5-2
Important Safety Information
document ix
L
labels
CRU product 7-2
I/O module symbol 3-2
on equipment viii
Page 60
Index iii
LEDs
EMU 4-1
location of front 2-11
rear 2-12
status displays
blower 6-3
I/O module 3-4
power supply 6-3
tape drive 5-2
symbols, defined 2-12
M
modifications
FCC compliance
statement A-2
mounting brackets
aligning 2-4, 2-5
attaching 2-3
securing to the rack 2-6
O
operation, verifying 2-11
overcurrent condition 3-3
overheating 5-2
avoiding 5-1
P
power
applying 2-10
cords, provided with array 6-1
module, latch 6-1
protection 3-3
protection, I/O module 3-3
supply
element 6-1
location of 1-2
replacing 7-6
specifications 6-2
status LEDs 2-12, 6-3
temperature 6-2
switch (none) 2-10
tape drive 5-2
protocols supported 1-1
R
rack
safety warning 2-1
template, using 2-2
replacement procedures
basic 7-3
blower 7-5
EMU 7-9
I/O module 7-10
power supply 7-6
tape drive 7-4
RJ-45 receptacle symbol ix
S
safety information ix
screwdriver icon viii
SCSI
bus
speeds 2-9
types 2-9
bus configuration 3-2
bus connector labels 3-2
cable
attaching 2-10
cables
lengths 2-9
cables, connecting 2-9
IDs 3-3
software
driver installation 2-13
storage management 2-13
status LEDs See LEDs
storage management software 2-13
symbols
in text viii
on equipment viii
tape array LED
fault 2-12
power 2-12
status 2-12
Page 61
iv Compaq TA1000 Tape Drive Array Reference Guide
T
TA1000 Tape Drive Array
features 1-2
front view 1-1
installation procedures 2-1
installing into the rack 2-7
rear view 1-2
weight 1-2, 2-7
tape drive
disabled 5-2
form factor 1-2
icons defined 5-2
illustrated 5-1
power 5-2
replacing 7-4
status LEDs 5-2
supported 1-3, 5-1
technical support x
telephone
numbers xi
symbol ix
temperature
limits 4-3
power supply 6-2
sensor 4-3, 6-2
template, rack, using 2-2
text conventions vii
tools, required for installation 2-2
troubleshooting
blower
failure 6-3
LED Off 6-3
speed 6-3
stopped 6-3
data transfers 6-4
EMU
LED is Off 4-5
LED is On 4-5
LED Off 4-1
I/O module
all LEDs Off 3-4
LED Off 3-3
SCSI bus LED Off 3-4
overheating
avoiding 5-1
power supply
failure 6-3
LED Off 4-4, 6-3
shut down 4-3
raised temperature 4-3
tape array
fault LED On 4-3
power LED Off 4-4
tape drive
disabled 5-2
U
utilities, software 2-13
V
voltage sensor 3-3
Page 62
Index v
W
warnings
blower blades 6-3, 7-5
electric shock viii
heavy weight ix
hot surfaces ix
installation requirements 1-2
multiple sources of power ix
network interface
connection ix
rack stability x, 2-1
RJ-45 receptacle ix
weight 2-7
weight
tape array 1-2
weight, tape array 2-7
www.compaq.com x
Loading...