Page 1
Adding the TL895 to the Enterprise
Backup Solution
TechNote
First Edition (May 1999)
Part Number ECG029/0399
Compaq Computer Corporation
Page 2
Notice
The information in this publication is subject to change without notice.
COMPAQ COMPUTER CORPORATION SHALL NOT BE LIABLE FOR TECHNICAL OR
EDITORIAL ERRORS OR OMISSIONS CONTAINED HEREIN, NOR FOR INCIDENTAL OR
CONSEQUENTIAL DAMAGES RESULTING FROM THE FURNISHING, PERFORMANCE, OR USE
OF THIS MATERIAL. THIS INFORMATION IS PROVIDED “AS IS” AND COMPAQ COMPUTER
CORPORATION DISCLAIMS ANY WARRANTIES, EXPRESS, IMPLIED OR STATUTORY AND
EXPRESSLY DISCLAIMS THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR
PARTICULAR PURPOSE, GOOD TITLE AND AGAINST INFRINGEMENT.
This publication contains information protected by copyright. No part of this publication may be
photocopied or reproduced in any form without prior written consent from Compaq Computer Corporation.
© 1999 Compaq Computer Corporation.
All rights reserved. Printed in the U.S.A.
The software described in this guide is furnished under a license agreement or nondisclosure agreement.
The software may be used or copied only in accordance with the terms of the agreement.
Compaq, Deskpro, Fastart, Compaq Insight Manager, Systempro, Systempro/LT, ProLiant, ROMPaq,
QVision, SmartStart, NetFlex, QuickFind, PaqFax, ProSignia, registered United States Patent and
Trademark Office.
Neoserver, Netelligent, Systempro/XL, SoftPaq, QuickBlank, QuickLock are trademarks and/or service
marks of Compaq Computer Corporation.
Microsoft, MS-DOS, Windows, and Windows NT are registered trademarks of Microsoft Corporation.
Pentium is a registered trademark and Xeon is a trademark of Intel Corporation.
Other product names mentioned herein may be trademarks and/or registered trademarks of their respective
companies.
Adding the TL895 to the Enterprise Backup Solution
TechNote
First Edition (May 1999)
Part Number ECG029/0399
Page 3
Contents
About This Guide
Symbols in Text............................................................................................................ 7
Where to Go for Additional Help................................................................................. 8
Integrated Management Display...........................................................................8
Telephone Numbers ..................................................................................................... 8
Chapter 1
Introduction
Overview.............................................................................................................10
Chapter 2
Component Summary
The Enterprise Backup Solution ................................................................................ 12
Fibre Channel Technology......................................................................................... 14
Fibre Channel Network.............................................................................................. 14
Fibre Channel Host Controller............................................................................14
Fibre Channel Gigabit Interface Converter (GBIC) ........................................... 14
Fiber Optic Cables .............................................................................................. 15
Fibre Channel Tape Controller ........................................................................... 15
Fibre Channel Storage Hub 12............................................................................ 15
The Compaq StorageWorks TL895 Cartridge DLT Tape Library..................... 16
Integrated Software Solutions.................................................................................... 17
Seagate Software Backup Exec........................................................................... 17
Computer Associates ARCserveIT..................................................................... 17
Page 4
Chapter 3
Installation and Configuration
Unpacking and Installing the TL895 Tape Library....................................................18
TL895 Tape Library Features....................................................................................19
Compaq Storage Options Documentation Library.....................................................20
Adding a TL895 to the Enterprise Backup Solution..................................................21
Connecting the Compaq StorageWorks TL895 Tape Library to the Enterprise
Backup Solution..................................................................................................21
Installation Instructions.......................................................................................22
More Information.......................................................................................................24
Upgrading from Direct Connect to the EBS Using the TL895..................................25
Hardware Connections........................................................................................25
Upgrading from the DLT 15 Cartridge Library Model 35/70 to the TL895.............26
Removing a Compaq DLT 15 Cartridge Library Model 35/70 from the EBS...26
Enterprise Backup Solution Compatibility.........................................................27
More Information................................................................................................28
Page 5
Chapter 4
Performance and Sizing
Lights Out Tests ......................................................................................................... 30
Calculating Tape Retention................................................................................. 30
Calculating Backup Windows............................................................................. 31
More Information................................................................................................31
Sizing..........................................................................................................................32
Calculations................................................................................................................ 32
Sizing the Enterprise Backup Solution ...................................................................... 33
Speed Tests.......................................................................................................... 33
Compression Tests.............................................................................................. 33
Compaq StorageWorks Backup Sizing Tool ............................................................. 35
Parameter Screen................................................................................................. 35
Server Information.............................................................................................. 36
Determining the Configured Primary Storage System ....................................... 36
Compressibility................................................................................................... 37
Selecting Software Options................................................................................. 38
Specifying Tape Rotation and Partial Backups .................................................. 39
Schedule Information Screen.............................................................................. 40
Solution Information........................................................................................... 43
Configuration Information.................................................................................. 44
Graphical and Text Schedule Information..........................................................45
Summary Information......................................................................................... 47
Software Product Information............................................................................. 48
Hardware Product Information ........................................................................... 49
Information and Tools......................................................................................... 50
Chapter 5
Management
Introduction................................................................................................................ 51
Compaq Insight Manager........................................................................................... 53
Overview............................................................................................................. 53
Key Features........................................................................................................ 55
Benefits at a Glance ............................................................................................ 55
Compaq Advantage.............................................................................................56
Page 6
Chapter 6
Diagnostics
Tier 1: Enterprise Server View--Compaq User Diagnostics.....................................58
Compaq Diagnostics for Windows Web Enabler Utility....................................58
Installation...........................................................................................................59
Program Functionality.........................................................................................60
User Diagnostics from the Server Control Panel................................................63
Storage Screen.....................................................................................................64
Tape Drive Diagnostics.......................................................................................65
DLT Tape Library Diagnostic Screen.................................................................66
Move Media Screen............................................................................................67
Information Screens............................................................................................68
Tier 2: Storage Area Network View--Fibre Channel Fault Isolation..........................69
Installing the Utility............................................................................................69
Running the Utility..............................................................................................69
Display of a Fibre Channel Tape Controller.......................................................71
Loop Error Histogram Display...........................................................................73
Display of a FC-AL with a Missing Fibre Channel Tape Controller.................74
Uninitialized Fibre Channel Arbitrated Loop Display.......................................75
Information and Updates.....................................................................................75
Tier 3: TL895 Library View--Compaq Library Diagnostics C1.01..........................76
Compaq Library Diagnostics Program Functionality.........................................77
More Information................................................................................................79
Index
Page 7
About This Guide
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.
Page 8
Where to Go for Additional Help
In addition to this guide, the following information sources are available:
■
User Documentation
■ Compaq Service Quick Reference Guide
■
Service Training Guides
■
Compaq Service Advisories and Bulletins
■
Compaq QuickFind
■
Compaq Insight Manager
■
Compaq Download Facility: Call 1-281-518-1418
Integrated Management Display
Some Compaq server models include a Compaq Integrated Management Display (IMD), an
integrated, 16x4 character display mounted on the front of the server. This display provides
easy-to-use menu-driven access to server information, including model number, LCD firmware
revision, and POST operations.
Telephone Numbers
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
For Compaq technical support:
■
In the United States and Canada, call 1-800-386-2172
■
For Compaq technical support phone numbers outside the United States and Canada, visit
the Compaq website at: http://www.compaq.com.
Page 9
Chapter
1
Introduction
Figure 1-1. The TL895, offering Low cost, High Performance, Reliable Automated Mass
Storage for Departmental and Enterprise Management.
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10 Adding TL895 Tape Drives to the Compaq Enterprise Backup Solution
Overview
According to the Strategic Research, storage requirements are on their steepest ramp ever and
the result is that data protection continues to grow in importance. The Novell and Windows NT
data centers are taking on a higher level of corporate data responsibilities. The trend for
corporations to centralize their servers will continue, while storage requirements become more
critical.
The cost-effective, Compaq StorageWorks TL895 DLT Tape Library helps ensure enhanced
productivity and data protection across the enterprise. By integrating automated backup,
archiving, and Hierarchical Storage Management (HSM) for departmental and enterprise
operations, it keeps pace with other storage schemes.
Targeting the secondary storage needs, adding the TL895 to the Enterprise Backup Solution
(EBS) product mix provides three primary enhancements:
1. Increased performance The TL895 offers up to seven DLT 35/70 drives for transfer
rates above 180 GB/hr for 2:1 compressed data.
2. Increased capacityThe TL895 supports up to 7 TB of data assuming 2:1 compression.
The TL895 is based on industry leading Digital Linear Tape (DLT) technology, featuring
96 data media slots and four portal slots, allowing customers to retain more data.
3. Increased ScalabilityThe TL895 is available in two to seven drive configurations to
match performance and retention needs, allowing lights out operations.
Other TL895 benefits include:
■
Simpler management The TL895 simplifies management by offering high
performance, capacity, and tape retention in one integrated system. Compaq Insight
Manager provides a complete suite of tools to enhance enterprise management.
■
Enhanced cabling systemThe TL895 offers differential SCSI attachments for cabling
requirements up to 20 meters from the Fibre Channel Tape Controller (FCTC). Fibre
Channel cable connections are available up to 500 meters on 50 m Multimode Fiber.
■
CompactWith a footprint of 6 sq. ft. (1.8 sq. m), this compact form factor integrates
well with standard rack environments, utilizing a front load port and drive access door for
normal maintenance and operation.
■
Ease of UseThe TL895 is designed with an integrated bar-code reader for automated
media inventory and offers automatic calibration of the robotic arm with respect to drives,
slots and the I/O port. A user-friendly GUI control panel with multi-functional capabilities
makes management and troubleshooting easy.
■
ReliabilityThe TL895 has extremely high robotic reliability, with greater than two
million mean swaps between failure.
■
Increased Investment ProtectionThis new architecture ensures investment protection
by allowing upgrades from existing direct attached solutions to the EBS.
The TL895 will be used as a component of the EBS to provide a centralized data repository for
the backup data. The library will be connected to the Fibre Channel loop via Fibre Channel Tape
Controllers (FCTC) and SCSI differential cabling. The FCTCs are connected to a Compaq
Fibre Channel Hub 12 through Fibre Channel cables. Multiple Compaq servers will also be
connected to this hub.
Application software manages the servers and the library to perform backups and restores. The
library is qualified with Seagate Software Backup Exec version 7.2 or later for NT and Backup
Page 11
Introduction 11
Exec version 8.0 or later for NetWare, running on Compaq servers. Computer Associates
ARCserveIT will be qualified in the near future.
Customers implementing backups and restores of large databases, File & Print servers, On-line
Transaction Processing (OLTP), and internets/intranets ideally do so at a departmental level.
The maximum supported configuration for the TL895, in an EBS environment, will be up to
eight homogeneous (Windows NT or NetWare) Intel servers. Future enhancements will address
the addition of more servers, different server platforms, and different Fibre Channel fabric
structures that will allow greater customer configurations.
Page 12
Chapter
2
Component Summary
Compaq has enhanced the StorageWorks Enterprise Backup Solution (EBS) with support for a
larger Tape Library called the Compaq StorageWorks TL895 DLT Tape Library. The TL895
supports up to seven DLT 35/70 tape drives and up to ninety-six data cartridges for a
compressed capacity of 6.6 TB. The TL895 is a vast improvement in performance and capacity
over the current Compaq DLT 15 Cartridge Library Model 35/70 that has fifteen cartridges.
Combining the high-powered TL895 DLT library with the functionality of the Enterprise
Backup Solution (EBS) makes data management:
■ Easier through centralization.
■ Faster through multiple backup and restores concurrently executing on all seven drives.
■ Scaleable because two to seven drive configurations allow sizing both speed and volume
to meet individual enterprise data zone needs.
The Enterprise Backup Solution
After examining a broad range of technologies, Compaq developed the Enterprise Network
Storage Architecture (ENSA) to take customers well into the 21
st
century. Working closely with
industry-leading independent software vendors (ISVs), Compaq created a fully integrated and
seamless solution--the Compaq StorageWorks Enterprise Backup Solution (EBS). This solution
consists of the following:
■ An independent Fibre Channel loop capable of transferring data at 100 Megabytes per
second (MB/s).
■ Fibre Channel Host Controllers and a Fibre Channel Storage Hub 12, linking the
server to the Fibre Channel loop.
■ Fibre Channel Tape Controllers (FCTCs) that convert Fibre Channel Protocol to
Differential SCSI protocol for the tape libraries. The FCTC also allows autonomous
control of the tape unit.
■ The Compaq StorageWorks TL895 DLT Tape Library with seven DLT drives and up
to 6.6 TB of storage.
■ Storage management software that takes advantage of the added bandwidth of Fibre
Channel and allows multiple servers to access multiple tape drives simultaneously.
Page 13
Component Summary 13
These components are engineered to provide the EBS with efficient backup of massive amounts
of data without adversely affecting network utilization. This architecture offers the best method
to protect large volumes of data and the component integration supports customer needs for
reduced administrative costs, greater manageability, and minimization of network traffic. This
new architecture ensures investment protection by allowing upgrades from existing direct SCSI
attached solutions to the EBS.
The figure below represents a typical Fibre Channel configuration showing how the Compaq
StorageWorks EBS overlays a traditional network.
TL895 Library
w/ 7 DLT 35/70 drives
& 96 cartridges
Fibre Channel
Tape Controllers
Fibre Channel
Storage Hub 12
Network Connections
Primary Storage
Figure 2-1. The Compaq StorageWorks Enterprise Backup Solution, using the Compaq
StorageWorks TL895 DLT Library
For more information on the Enterprise Backup Solution see the tech note The Compaq
StorageWorks Enterprise Backup Solution (Part Number ECG105/0398) at:
http://www.compaq.com/support/techpubs/technotes/.
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14 Adding TL895 Tape Drives to the Compaq Enterprise Backup Solution
Fibre Channel Technology
Fibre Channel is a media-independent, industry-standard interconnect and high-performance
serial I/O protocol that supports simultaneous transfers of multiple protocols. Its Gigabit speed
throws open the door to storage networks of the future. Compaq has partnered with Hewlett
Packard to develop the Fibre Channel Host Bus Adapter (HBA), based on the HP Tachyon chip
that allows high-performance SCSI protocol transmission through a Fibre Channel medium.
Multimode fiber optic cable allows greater transmission distance500 meters presently and 10
kilometers in the near futureperfect where disaster recovery or centralized storage is a
priority.
An integrated set of standards for Fibre Channel is being developed by committees accredited
by the American National Standards Institute (ANSI), defining new protocols for flexible
information transfer. For additional information on the Fibre Channel protocol, see the
Technology Brief Strategic Direction for Compaq Fibre Channel-Attached Storage
(Part Number ECG009/1097) at http://www.compaq.com/support/techpubs.
Fibre Channel Network
Fibre Channel is the next generation in storage technology, combining the reliability and low
latency of a serial channel with a network’s flexibility and connectivity. The result is a
100 Megabytes per second (MB/s) storage network that supports simultaneous transfer of many
different data protocols, including SCSI, IP, and others. Fibre Channel supports an architecture
that separates data and communications traffic. The Compaq vision of the Enterprise Network
Storage Architecture (ENSA) is one that provides benefits such as: increased system
performance, resource consolidation resulting in greater efficiency, manageability, and control,
optimized solution management design and integration with recognized industry partners in
software development.
For more information on Fibre Channel technology, please refer to the technology brief
Strategic Direction for Compaq Fibre Channel-Attached Storage (Part Number ECG009.1097)
available at: http:www.compaq.com/support/techpubs/whitepapers.
Fibre Channel Host Controller
A Fibre Channel Host Controller is installed in each server
and provides the PCI to Fibre Channel interface for
connecting the Fibre Channel Storage Hub 12 to the
servers.
Fibre Channel Gigabit Interface Converter (GBIC)
(GBIC) Fibre Channel GBICs are optical-to-electrical converters that
enable Fibre Channel cables to easily connect the Host Bus Adapter and
Storage Hub 12. These hot-pluggable devices add flexibility and
reliability to the EBS.
Page 15
Component Summary 15
Fiber Optic Cables
Compaq fiber optic cables are available in 2, 5, and 15 meter
lengths. Fibre Channel cables are thin, flexible and easy to
install. Industry Standard SC connectors can be installed by
contractors to meet enterprise design
requirements. The EBS
has been tested to support 500 meter lengths of 50 micron
multimode fiber and 300 meter lengths of 62.5 micron
multimode fiber.
Fibre Channel Tape Controller
A Fibre Channel Tape Controller (FCTC)
translates the Fibre Channel protocol to a SCSI
protocol between the Fibre Channel Network and
the Differential SCSI devices. This allows sharing
of the tape libraries. The controller handles
single-port fiber channel in/single-bus out SCSI.
The FCTC is a rack-mountable unit in a 1U form
factor. To maximize throughput, Compaq
recommends attaching up to two DLT drives per
FCTC.
Fibre Channel Storage Hub 12
A Fibre Channel Storage Hub 12
enables multiple servers and tape
devices to connect to a Fibre Channel
loop. A single storage hub allows up to
12 GBIC direct Fibre Channel
connections for a centralized backup
solution. For example, eight servers
can be connected to the storage hub,
leaving four available ports for
connections to Fibre Channel Tape
Controllers. The storage hub is a rackmountable unit with a 1U form factor.
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16 Adding TL895 Tape Drives to the Compaq Enterprise Backup Solution
The Compaq StorageWorks TL895 Cartridge DLT Tape Library
One of the most important components of the Enterprise Backup
Solution is the tape library. The TL895 is offered with any number
of DLT 35/70 drive combinations starting with a minimum of two
drives and a maximum of seven. Backup performance can range
from 52 GB/hr with two drives to over 180 GB/hr with seven
drives. This flexibility allows customers to match their
performance requirements and add drives as their performance
requirements increase. The maximum capacity of the TL895 is
6.6 TB (2:1 compression) using ninety-six DLT data cartridges.
The TL895 Library automates the tape handling process, freeing
valuable administrative resources and providing 24x7 hours of
continuous dedicated service.
Page 17
Component Summary 17
Integrated Software Solutions
The backup management software is a crucial component of the EBS that allows the hardware
components to work together. Compaq has partnered with Seagate Software Inc. and Computer
Associates Inc. to deliver an integrated, centralized, Fibre Channel storage solution for
Microsoft Windows NT 4.0 and Novell NetWare 4.11 or later. The EBS enables multiple
servers to share libraries.
Seagate Software Backup Exec
Seagate Software's Backup Exec solution combines the benefits of
centralized data storage with a distributed fault-tolerant architecture.
Multiple backup servers share common tape storage devices, yet all
backup servers operate independently and can initiate backups and
restores regardless of the state of other servers. Seagate Software
provides many additional features designed to increase fault tolerance
and data reliability.
Computer Associates ARCserveIT
Computer Associates ARCserveIT solution within the Enterprise Backup
Solution is designed around a centralized primary server. A primary
ARCserveIT server manages and controls all tape device access and
coordinates task distribution. This primary server will automatically allocate
shared devices to queued backup/restore jobs. In the event a device is
unavailable, the primary ARCserveIT server will automatically assign
another available device to the queued backup job.
Page 18
Chapter
3
Installation and Configuration
Unpacking and Installing the TL895 Tape Library
The TL895 Tape Library is a precision
instrument that can provide years of
dependable service if care and planning are
applied during handling and setup. Detailed
documentation and instructions are included
with each library in multiple languages.
The TL895 Tape Library Unpacking &
Installation Guide Instruction manual
provides step-by-step instructions to:
■ Inspect the shipping box
■ Choose an installation site
■ Unpack and move the library
■ Store the packing materials
Careful planning for mechanical, power, and
environmental requirements are essential.
When the library is successfully installed the
library can be powered up for calibration and
testing.
Page 19
Installation and Configuration 19
TL895 Tape Library Features
The TL895 Tape Library User Guide
provides a library overview and detailed
features for operations. New users should
study the manual before connecting the
library to the Enterprise Backup Solution
and fully understand these features and
operations:
■ Load Port Operations
■ Control Panel Operations
■ Access Doors and Functions
■ Robot and Gripper Operations
■ Tape Drives and Cartridges
■ Configuring the Library
■ Run Library Self-Tests
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20 Adding TL895 Tape Drives to the Enterprise Backup Solution
Compaq Storage Options
Documentation Library
Compaq Product Quality Statements, Important
Information advisories, and the CD-based
Compaq Storage Options Documentation
Library are included for more in-depth
information with support for the following
languages:
■ English
■ French
■ Italian
■ German
■ Spanish
■ Japanese
■ Danish
■ Netherlands
Page 21
Installation and Configuration 21
Adding a TL895 to the Enterprise Backup Solution
Connecting the Compaq StorageWorks TL895 Tape Library to the
Enterprise Backup Solution
1
3
9
6
Port 5
Port 3
Port 1
Port 7
2
6
4
5
5
5
7
6
8
8
Bubble Number Component Name
1
TL895 Tape Library
2
Fibre Channel Tape Controllers (FCTC)
3
Storage Hub 12
4
Server
5
Differential SCSI Cables
6
50 mMultimode Optical Cables
7
External differential terminator
8
GBIC Modules
9
Fibre Channel Host Bus Adapters
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22 Adding TL895 Tape Drives to the Enterprise Backup Solution
Installation Instructions
Choose a suitable location and unpack the components according to the unpacking instructions
included with each component.
WARNING: Make sure the power is off to each component and power cords are
unplugged before making any of these connections.
IMPORTANT: Read the documentation included with each component for additional operating
instructions before installing.
Installing the Fibre Channel Host Bus Adapter into each Server
Install a Fibre Channel Host Adapter in each server to be connected to the Enterprise Backup
Solution. Refer to the documentation provided in the Fibre Channel Host Adapter Kit.
Connecting the TL895 Library to the FCTC
1.
Connect the TL895 library to the FCTC(s) using SCSI cables.
2.
The other SCSI port on the FCTC must be terminated with the Differential Terminator
supplied.
Refer to the table below to perform Steps 1 and 2. The number of cables and Fibre Channel
Tape Controller(s) (FCTC) used varies depending upon the number of drives in each library.
Table 3-1
Hardware Reference Table
Number of Drives Number of FCTC(s) &
SCSI Cables
Library Port Connectors
21
3 2 1 and 3
4 2 1 and 3
5 3 1,3, and 5
6 3 1,3,5, and 7
7 4 1,3,5, and 7
NOTE: Do not connect to or externally terminate SCSI Ports 2, 4, 6, & 8.
Connecting the FCTC(s) to the Storage Hub 12
Connect the FCTC(s) to Storage Hub 12 using Fibre Channel cables.
1.
Connect one end of a Fibre Channel cable to each FCTC.
2.
Install a GBIC-SW module into each hub port you plan to use.
3.
Connect the Fibre Channel cables to the GBIC modules.
Page 23
Installation and Configuration 23
Connecting Each Server to Storage Hub 12
The Storage Hub 12 is connected to the server's Fibre Channel Host Adapter using Fibre
Channel cables and GBIC modules.
1.
Install one end of a Fibre Channel cable into a GBIC module in Hub 12.
2.
Install the other end of the cable into a GBIC module within each server’s Host Adapter.
Applying Power
Make sure the power switch is off to each component.
1.
Install each component's power cord and then plug it into the AC power source.
2.
Apply power to each component in the following sequence:
a.
Fibre Channel Storage Hub 12
b.
TL895 Tape Library
c.
Fibre Channel Tape Controllers
d.
Servers
Upgrade ISV Software
Refer to the specific documentation delivered with any ISV software supporting the EBS and
upgrade if necessary.
Prepare the TL895 for Operation
After the TL895 is installed and connected to the host, perform the procedures listed below.
Table 3-2
Post Installation Procedures
Procedure Information Location
1. Load the library with cartridges Chapter 4 of the
TL895 Tape Library User’s
Guide
, “Tape Drives and Cartridges,” or
the
35/70 DLT Tape Drive Installation
Instructions Manual
.
2. Define the library power-up state
3. Enable/disable the Auto Clean option
4. Enable/disable the Auto Load option
5. Set the number of bar code retries
6. Enable/disable the Auto Drive Unload
option
7. Perform an inventory
Chapter 5 of the
TL895 Tape Library User’s
Guide
, “Control Panel.”
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24 Adding TL895 Tape Drives to the Enterprise Backup Solution
Place the Library On-line
With the library ON and the control panel displaying “System Off-line,” press the Control Panel
Standby button to place the library on-line.
More Information
Refer to the Compaq StorageWorks TL895 Tape Library User Guide
(Part Number 340968-001) or the Compaq StorageWorks TL895 Diagnostic Software Program
User Guide (Part Number 340967-001) for complete instructions on configuring and testing the
library.
Page 25
Installation and Configuration 25
Upgrading from Direct Connect to the Enterprise
Backup Solution Using the TL895
This section will assist with the migration from a Compaq TL895 Tape Library connected
directly to a server to one connected through an enterprise environment with Fibre Channel
Tape Controllers (FCTCs).
Hardware Connections
1.
Remove the power cord from the SCSI converter devices located between the server and
the TL895 library.
2.
Remove each converter unit and the SCSI cables that are attached to the server. Leave the
other SCSI cables attached to the TL895 library.
3.
Install the required number of Compaq FCTCs to the Storage Hub 12. For TL895
connection procedures, see the Quick Setup Guide called Connecting the Compaq
StorageWorks TL895 Tape Library to the Enterprise Backup Solution
(Part Number 330558-001).
Table 3-3
Hardware Connection Reference Table
Number of Drives Number of FCTC(s) and
SCSI Cables
Library Port Connectors
211
3 2 1 and 3
4 2 1 and 3
5 3 1,3 and 5
6 3 1,3 and 5
7 4 1,3,5 and 7
4.
Connect the SCSI cables between the TL895 library and the FCTCs.
5.
Install or upgrade the backup software that will be used in the EBS environment.
6.
Power off the servers that had the direct connections.
NOTE: The SCSI Host Bus Adapter (HBA) that was used for the direct connection may remain in
place or be removed from the server. However, if the HBA is removed, the system configuration
utility, found on the system partition or the SmartStart CD, must be run to ensure proper system
recognition.
7.
For instructions on applying power, refer to Step 5 of the Quick Set-up Guide called
Connecting the Compaq StorageWorks TL895 Tape Library to the Enterprise Backup
Solution (Part Number 330558-001).
For further information, refer to the documentation delivered with the Fibre Channel
components.
Page 26
26 Adding TL895 Tape Drives to the Enterprise Backup Solution
Upgrading from the DLT 15 Cartridge Library Model
35/70 to the TL895
Current Enterprise Backup Solution configurations support the DLT 15 Cartridge Library Model
35/70 or the TL895 Tape Library, not both simultaneously. This section assists with the
removal of a DLT 15 Cartridge Library Model 35/70 prior to installing a TL895 Tape Library to
the EBS. It also provides information on compatibility with previous releases of the TL895.
WARNING: Before making any changes, make sure power is off to the DLT 15 Cartridge
Library Model 35/70 and the power cord is removed. Also turn power off to the Fibre
Channel Tape Controller (FCTC).
Removing a Compaq DLT 15 Cartridge Library Model 35/70 from
the EBS
1.
Turn off power and remove the power cord from the DLT 15 Cartridge Library Model
35/70. Turn off the FCTC power.
2.
To remove the DLT 15 Cartridge Library Model 35/70 from the EBS:
If using a new SCSI cable, unplug the SCSI cable from the FCTC.
If reusing the existing SCSI cable, unplug the SCSI cable from the DLT 15 Cartridge
Library Model 35/70.
NOTE: A SCSI cable and differential terminator must be used.
3.
Refer to the Quick Setup Guide called Connecting the Compaq StorageWorks TL895 Tape
Library to the Enterprise Backup Solution (Part Number 330558-001) to connect a TL895
Tape Library to the EBS.
4.
Reboot the primary server to recognize the new device.
5.
Consult backup application documentation to configure the new library to the EBS.
Page 27
Installation and Configuration 27
Enterprise Backup Solution Compatibility
The serial numbers indicated below require TL895 revisions.
Table 3-4
Upgrade Requirements
Series Version: A01
DS-TL895-BA
A01
DS-TL895-H2
B01
DS-TL895-BA
C01
DS-TL895-BA
or
DS-TL895-H2
EBS Compatible
S/N Start 5J80500006 5J83400001 5J83400001 2G91CBB5T001
S/N End 5J83200010 5J90400005 5J90400005 2G91CBB5X014
Robotic FW
Version
N2.20 N2.30 N2.30 N2.31
Robotic FW
Upgrade Method
Tapelib Diag.
and N2.31
Tapelib Diag.
and N2.31
Tapelib Diag.
and N2.31
None Required
Tape Library S/N N/A N/A N/A 12 Digit
Upgrade Method EBS Label EBS Label EBS Label N/A
GUI FW Version 1.2 1.22 1.23 1.23
Upgrade Method Tapelib Diag.
and 1.23
Tapelib Diag.
and 1.23
None Required None Required
Drive FW Version V55 DGL V80 CPA-2 V80 CPA-2 V80 CPA-2
Upgrade Method FUP Tapes None Required None Required None Required
NOTE:
If your system is a Series A01 or B01, contact your Compaq Services
Representative for on-site revision information. Phone support may be accessed by
calling 1-800-OKCOMPAQ.
IMPORTANT: Only certified service representatives are qualified to implement these system
revisions.
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28 Adding TL895 Tape Drives to the Enterprise Backup Solution
More Information
Compaq StorageWorks TL895 Tape Library Reference Guide
For detailed information on upgrading your EBS environment by adding the Compaq
StorageWorks TL895 Tape Library, see the Compaq StorageWorks TL895 Tape Library
Reference Guide (Part Number 138244-001). Included in the upgrade kit, this document explains
how to properly operate the TL895 in the Enterprise Backup Solution (EBS) and configure it
with the latest drive, robotic, and GUI firmware revisions.
Compaq recommends visiting the following sites for additional
information:
■ Websites for TL895 documents and EBS information:
On the Compaq Intranet: http://qicvax.shr.dec.com
http://www.compaq.com/storageworks/
■ For robotic serial number configuration:
Customer Advisory at: http://www.compaq.com/support/techpubs/customer_advisories
■ Latest drivers, diagnostic tools, documentation and software:
http://www.compaq.com/storageworks/
To install backup applications from independent software vendors (ISVs), reference their
solutions CD.
NOTE: SmartStart version 4.22 or later and Storage Management Solutions 3.20 or later support
EBS.
Page 29
Chapter
4
Performance and Sizing
The TL895 Tape Library adds scalability for tape retention and performance demands. This
powerful tape library is available in models using from two to seven drives, featuring high
performance DLT 35/70 drives to fit any lights out enterprise backup solution needs.
Compaq also developed industry leading performance tests that analyze the affects automated
tape libraries have on enterprise based lights out backup solutions.
The tech note called Compaq StorageWorks Enterprise Backup Solution
(Part Number ECG105/0398) found at: http://www.compaq.com/support/techpubs/technotes
contains in-depth details of factors affecting performance (Chapter 4: Performance) and factors
to consider in calculating tape retention (Chapter 8: Sizing). This tech note introduced the
Backup and Restore formulas that allow easy estimation of performance at varying rates of
compression. Benchmark testing and additional calculations of performance impacted by tape
changes, controller feed speeds, and backup job type are described and tested.
With the integration of the TL895 Tape Library into the Compaq StorageWorks Enterprise
Backup Solution, new performance levels exceeding 180 Gigabytes per hour can now be
reached.
The enhanced Compaq StorageWorks Backup Sizing Tool allows either the TL895 or the DLT
15 Cartridge Library Model 35/70 libraries to be selected for performance solutions in an EBS
environment. This state of the art tool applies all the calculations to real world solutions,
yielding realistic performance estimates.
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30 Adding TL895 Libraries to the Compaq Enterprise Backup Storage System
Lights Out Tests
Lights out tests were designed to consider factors that would affect backup rates when
automated tape libraries are connected to the EBS. Tape retention policies determined the
number of tapes needed to maintain several sets of backups that can be overwritten after the
retention period has expired. Full, Incremental, and Differential backups were analyzed to find
factors that would affect performance when large quantities of data were processed.
Calculating Tape Retention
How you store the backup data on tape and how long you keep the tapes before they are erased
greatly impacts the total number of tapes needed to maintain the desired backup schedule.
Follow the procedure below to determine the amount of storage you will need.
Definition
There are three basic types of tape rotation within each backup cycle. Each method offers
advantages and disadvantages in cartridge use and restore time.
■
(F) Full Backups Only--All data is backed up every time a backup is conducted.
■
(I) Full/Incremental Backups--Each backup cycle will include one full backup and
multiple incremental backups. Incremental backups back up all data that has changed
since the last backup of any type.
■
(D) Full/Differential Backups--Each backup cycle will include one full backup and
multiple differential backups. Differential backups back up all the data that has changed
since the last full backup.
Procedure
1. Calculate data sets. Determine the number of full, incremental, and/or differential data
sets to be retained.
2. Assign percentages to each backup set for a given number of days. For example:
Full (F) = 100%
Incremental (I) = 20%*
Differential (D) = 20%*
*NOTE: Actual Incremental and Differential percentages vary for every backup set, based on the
actual amount of data changed.
3. Total the percentages.
4. Calculate total storage needed:
Total Percentage * Data Set (in GB) = Total Storage Needed (in GB)
5. Calculate storage capacity of each tape:
35 GB * Compression Rate = Tape Capacity
6. Calculate number of tapes needed:
(Total Data * Retained Percentage)/Tape Capacity = Number of Tapes Required
Page 31
Performance and Sizing 31
Calculating Backup Windows
■
Volume Calculations--Backup windows can be set at virtually 24 hours per day with the
EBS due to the use of a separate Storage Area Network (SAN) for data movement.
However, many administrators prefer to schedule backups at off hours for management
reasons. To calculate the time needed to perform various backup jobs, the backup rate, as
defined in the Backup Formula section, must be compared to the data sets being backed
up.
■
Tape Change Adjustment--Backup windows are determined by the total elapsed time
required to backup sets of data. The number of DLT Drives can be increased by adding
Tape Libraries to the EBS to meet the most demanding needs. A 3% reduction in
performance should be applied to all backups that exceed the volume of one tape.
■
Incremental or Differential Adjustment--Incremental and differential backups must
compare archive bits of all files in the 180 GB data set and only back up the files that have
changed since the last differential or full backup. A 14% reduction in performance should
be applied to all Incremental and Differential backups.
IMPORTANT: Real world effects on Incremental and Differential backups will vary depending
on the percentage of changed files in each data set.
More Information
For detailed information and data for Lights Out testing see the whitepaper entitled Sizing the
Compaq StorageWorks Enterprise Backup Solution (Part Number ECG551/0399) at:
http://www.compaq.com/support/techpubs/whitepapers/.
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32 Adding TL895 Libraries to the Compaq Enterprise Backup Storage System
Sizing Calculations
Before you can begin the sizing process, you must have a thorough understanding of the
network, the type of data to be backed up, and the back-up window parameters. The easiest and
most precise way to size an Enterprise Backup System is to use the Compaq StorageWorks
Enterprise Backup Solution sizer software, which may be obtained from the Internet at
http://www.compaq.com/products/storageworks/ebs/ebstoolsbackupsizing.html.
If you do not have access to the software, the whitepaper entitled Sizing the Compaq
StorageWorks Enterprise Backup Solution (Part Number ECG551/0399) found
at: http://www.compaq.com/support/techpubs/whitepapers/ will walk you through the manual
sizing process. The basic steps are:
1. Calculate the Base Rate
2. Adjust the Base Rate
3. Calculate Number of DLT Drives Needed
4. Determine the Retention Parameters
5. Determine Number of Tapes Required
6. Determine Number of Libraries Needed
Page 33
Performance and Sizing 33
Sizing the Enterprise Backup Solution
Speed Tests
Determining the speed of Backup and Restore processes in a real-world environment is the most
important factor in designing and implementing the Compaq StorageWorks EBS. Fibre Channel
is designed to produce a theoretical maximum of 1.0625 Gigabits per hour. This equates to
100 Megabytes per second or 360 Gigabytes per hour. (Test results are expressed in GB/H for
clarity).
IMPORTANT: A single DLT 7000 drive is rated at a theoretical maximum of 18 GB/H.
To determine the approximate speed of backup and restore jobs in an EBS environment,
Compaq began testing non-compressible (1:1) data.
IMPORTANT: Compaq tested both the Seagate Backup Exec and Computer Associates (CA)
ARCserveIT in an EBS environment to benchmark the DLT performance. Both Seagate and CA
generated consistent throughput of approximately 15 GB/H.
Tests were performed with each job configured to write to a single DLT drive. Tests show nearlinear scalability. The TL895 supports seven DLT 7000 tape drives.
1:1 Backup & R estore
0
14.87
29.93
44.77
59.70
74.25
89.49
109.16
0
14.76
29.97
44.88
58.14
69.87
80.36
90.15
0
20
40
60
80
100
120
1234567
Number of DLT Drives
Gigabytes Per Hour
Backup Restore
Figure 4-1. Test Results of Backup and Restore Jobs.
Compression Tests
IMPORTANT: The amount of compression has a direct impact on the rate that a DLT 7000 tape
drive can write data
.
Tests showed the number of DLT drives and compression scaled near 1:1, but the total rate of
combined throughput declined slightly as compression increased. It was also determined that the
maximum throughput on a single DLT drive was 43 GB/H.
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34 Adding TL895 Libraries to the Compaq Enterprise Backup Storage System
Restore rates also scaled near 1:1 with the same effect of compression and one additional factor.
The maximum combined restore rate topped out at 90 GB/H for various numbers of drives and
compression rates.
NOTE: The test results were based on a controlled set of variables, but real-world data
compression varies from file to file. The EBS Tech Note details test variables and other factors
that can affect performance.
A formula was derived that closely approximates the backup performance for various levels of
compression. The formula was compared to actual backup and restore jobs at all tested
compression rates.
Backup S p eed vs. Compression
0.00
20.00
40.00
60.00
80.00
100.00
120.00
140.00
160.00
180.00
200.00
1234567
Numbe r o f DLT Dr ives
Gigabytes Per Hour
1:1 Backup 1.7:1 Backup 2:1 Formula 2:1 True 2.5:1 Backup
Figure 4-2. Comparisons of actual compressed jobs and the formula
Backup Formula
If ((Base Rate * Compression) – (Compression2)) < 43
Then ((Base Rate * Compression)–(Compression
2
)) * Drives) = Backup Rate
Else (43 * Drives) = Backup Rate
■
The Base Rate for 1:1 Backups is 15 GB/H
■
The Drives equal the number of DLT Drives backing up data
■
The Compression Loss (CL) is equal to Compression Squared
IMPORTANT: The formula can approximate backup and restore rates for the EBS, but every
backup or restore job in the real world is subject to performance variables. The formula and Sizer
Tool are only estimates, designed to be as close as possible to real world conditions.
Page 35
Performance and Sizing 35
Compaq StorageWorks Backup Sizing Tool
Compaq developed a sizing tool that:
■
Allows easy input of the many variables that affect backup performance.
■
Calculates the number of tapes and libraries necessary to allow Lights Out operations.
■
Speeds calculations to ensure that backup windows are not exceeded.
The tool allows selection of server configurations that can be replicated or modified to represent
enterprise zones. Detailed calculations and equipment required are presented, showing
quantities and part numbers necessary to deploy the Compaq StorageWorks Enterprise Backup
Solution. The Compaq StorageWorks EBS Sizer Tool is available at:
http://www.compaq.com/products/storageworks/ebs/ebstoolsbackupsizing.html.
Parameter Screen
The Parameters view collects information about the tape management implementation. First
choose the operating system your solution will support, then add a server to be supported in the
solution. After completing the interview session for that server, the Parameters view displays
again. At this time, you can choose to copy, edit, or delete that server. You can also add another
server.
Figure 4-3. Parameter Selection screen
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36 Adding TL895 Libraries to the Compaq Enterprise Backup Storage System
Server Information
Enter a server name and the estimated total Gigabytes of data to be backed up.
Figure 4-4. Server Information screen
Determining the Configured Primary Storage System
The primary storage configuration is an important link in the backup performance calculation. It
has a direct effect on the speed at which the server can send data to the tape device. Select the
type and configuration that most closely matches your server’s primary storage system. Pull
down the menu selections for various hard disk controllers to select the approximate feed speed
of the primary storage system. You may also select Automatic to test the performance of disk
drives physically connected to the machine the sizer tool is running on.
Ideal primary storage feed speed would be above three times the backup rate (3:1) of each DLT
drive. This will allow the data to stream to the DLT drive and achieve near 100% performance.
If the feed speed is 2:1 but less than 3:1, the backup performance is reduced by approximately
20%. If the feed speed is less than 2:1, the backup performance is reduced by approximately
50%. The sizer tool uses the reduction ratios to better estimate the actual performance for
various primary storage controller systems.
IMPORTANT:
These percentages are only estimates and individual performance may vary.
Page 37
Performance and Sizing 37
Compressibility
The compressibility screen allows specification of the type of backup data. Tests have shown
that not all data can be compressed equally. The compression ratio will affect the amount of data
that can be stored on each tape cartridge, as well as the speed at which the tape drives can
read/write the data. If you have been performing tape backups on servers with DLT tape drives,
you should already have a good idea of the expected compression ratio for your data. Select the
type of data that most closely matches your environment, or enter this information in the Other
field. If your server has multiple types of data, select the anticipated composite average
compression ratio.
Figure 4-5. Data Compressibility Information screen
A compression ON/OFF check box allows you to calculate performance with Compression
turned off. For data sets with low compressibility, turning Compression OFF may increase
performance.
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38 Adding TL895 Libraries to the Compaq Enterprise Backup Storage System
Selecting Software Options
Choose the appropriate options for the server being configured. This information is used to
select the software modules that are detailed in the solution. These options do not affect the
performance calculations. The part numbers for selected items are displayed in the Solution and
Summary screen. When selecting Oracle, Exchange, SQL, or SAP, the appropriate agent
software and part numbers will be included in the Solution and Summary Screens.
Figure 4-6. Software Information screen
Page 39
Performance and Sizing 39
Specifying Tape Rotation and Partial Backups
The Partial Backups screen allows you to enter the type of tape rotation to be used within each
backup cycle. There are three basic types of tape rotation within each backup cycle. Each
method offers advantages and disadvantages in cartridge use and restore time.
Figure 4-7. Tape Rotation and Partial Backups screen
For additional tape rotation information, see the sizer tool help screens.
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40 Adding TL895 Libraries to the Compaq Enterprise Backup Storage System
Schedule Information Screen
The Schedule Information screen allows you to enter your backup schedule.
Data to be Backed Up
For each day of the week, specify the type of backup that will be performed. Selecting the only
data that has changed option will refer to either differential or incremental backups as defined
on the previous screen. Differential backups back up all data that has been changed since the last
full backup, while incremental backups back up all data that has been changed since the last
backup of any type.
Percentage Changed
Estimate the percentage of data that will have changed for this backup. This will help estimate
the amount of data being backed up during this operation.
Backup can Occur
Specify the beginning and ending time for the backup window for this server. You can specify a
different backup window for each day of the week, or you can specify one single backup
window that will apply to all days.
Figure 4-8. Schedule Information screen
Page 41
Performance and Sizing 41
Retention Screen
Figure 4-9. Tape Retention Information screen
Full Backup Retention
Specify how many cycles of full backups you will want stored within the tape library.
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42 Adding TL895 Libraries to the Compaq Enterprise Backup Storage System
Keeping Partial Backups
This allows you to define the way tape sets are managed between the full and partial backups.
There are three options:
1. On the same tape set as the full backup--Full and partial backups for one cycle (usually
one week) are all part of a single tape set. The retention schedules for these cartridges
must be equal. With this option, all partial backups are retained as long as the preceding
full backup is retained.
2. Together on a different tape set from the full backup--Partial backup data is written to
a dedicated tape set that is separate from the full backup tape set. Each day’s partial
backup is “appended” to the end of the last partial backup. One retention period is defined
for the entire partial backup tape set. This is the most common option since most users
choose to define a longer retention period for full backup tape sets than the partial backup
tape sets.
3. On individual tape sets--Each day’s partial backup is written on a separate tape set. Any
excess capacity remaining on the last tape of the day’s partial backup is wasted since the
next day’s backup is written to a new tape set.
Erase Partial Backups
This allows you to define the retention procedure and erase schedule for your partial backups.
This option does not appear if you selected “On the same tape set as the full backup” on the
previous question.
Between Full Backups
This only appears if you choose to perform differential backups and also choose to keep each
partial backup on a separate tape set. There are two options:
1. Keep all differential backups--Each differential backup within a cycle is retained until
the time stated within the “Erase partial backups.”
2. Keep no more than this many differential backups--Differential backup tape sets will
be recycled after there are the specified number of differential backups or when the time
stated within the “erase partial backups” is reached. For example, if you are performing
differential backups on M-F and specify “2” for this question, you will perform
differential backups on Monday and Tuesday. On Wednesday, Monday’s tape set will be
deleted. On Thursday, Tuesday’s tape set will be deleted.
Tape Sets
This shows the number of tapes required for this server.
Page 43
Solution Information
The Solutions view displays the list of solutions that support the performance and business
requirements specified for the tape management implementation. General information displays,
including the necessary software type, version and number of servers, tape libraries, and tapes
you will need for the solution.
All of the suggested components are listed to create the solution recommendations, including
quantity needed, part number, and description. Part numbers shown are based on US Domestic
product descriptions. Consult your Compaq Authorized Dealer or reseller for specific
configurations.
Performance and Sizing 43
Figure 4-10. Solution Information screen--TL895
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44 Adding TL895 Libraries to the Compaq Enterprise Backup Storage System
Configuration Information
This view graphically displays each component necessary for the configured solution. Each
selection can be expanded to show detailed configuration information.
Figure 4-11. Configuration Information screen--DLT 15 Cartridge Library Model 35/70
Page 45
Performance and Sizing 45
Graphical and Text Schedule Information
The Schedule screens allow you to view your backup schedule. The Schedule view displays the
complete backup schedule you have selected through the interview session dialog. Elapsed
times are based on the formulas described in the Summary View Help Screen. For detailed
information, refer to the tech note called Compaq StorageWorks Enterprise Backup Solution
(Part Number ECG1050398) at:
http://www.compaq.com/products/storageworks/ebs/ebswhitepaper.html.
Figure 4-12. Graphical Schedule Information screen--TL895
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46 Adding TL895 Libraries to the Compaq Enterprise Backup Storage System
The text schedule Information Screen shows start times and detailed elapsed times of each job
configured.
Figure 4-13. Text Schedule Information Screen--TL895
Page 47
Performance and Sizing 47
Summary Information
The Summary Information screen recaps all data collected and the solution developed by the
Sizer tool, based on the calculation information presented in the beginning of this chapter.
Adding Additional Servers
By returning to the Parameters screen, you can add, copy, or delete additional servers to develop
the Enterprise Backup Solution that represents your environment. You can navigate forward and
backward through the dialog screens to vary volume, conditions, tape rotation schemes and view
the results.
Warning messages pop up when the configured solution exceeds the capacity of the maximum
configuration currently supported.
Figure 4-14. Summary Information screen
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48 Adding TL895 Libraries to the Compaq Enterprise Backup Storage System
Software Product Information
This screen lists available software products and describes their function and capabilities.
Figure 4-15. Software Product Information screen
Page 49
Performance and Sizing 49
Hardware Product Information
This screen lists all pertinent hardware product information.
Figure 4-16. Hardware Product Information screen
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50 Adding TL895 Libraries to the Compaq Enterprise Backup Storage System
Information and Tools
For more information on sizing your system, entitled Sizing the Compaq StorageWorks
Enterprise Backup Solution (Part Number ECG551/0399) at:
http://www.compaq.com/support/techpubs/whitepapers/.
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Chapter
5
Management
Introduction
Management of distributed enterprise environments is a prominent benchmark
in today’s competitive business world. To address this need, Compaq has
developed a plan that integrates systems and storage-management software.
Compaq provides Compaq Insight Manager as a server management tool,
controlling storage as an extension of the server. Compaq Insight Manager
provides Element Management and other utilities to manage configurations of
subsystems.
The impending introduction of Compaq Insight Manager XE, a Web-based
Enterprise Management (WBEM) application, will build an infrastructure for
the integration of all storage management software components. The
StorageWorks Command Console (SWCC) management utility will be
included to manage and configure StorageWorks subsystems.
Partnering with Seagate Software Inc. and Computer Associates Inc., Compaq
is developing key software to integrate their management consoles into this
architecture. Although Enterprise Backup Solution (EBS) components are
transparent to the server and the tape library, additional management features
will be implemented in the Storage Hub 12 and the Fibre Channel Tape
Controller (FCTC) components in future product releases.
Tape management is progressing through continuous industry-standard efforts
to address the new virtual enterprise storage networks. Tape Alert is a major
effort to put advanced device management and reporting functions in the
hands of Network Administrators. Compaq uses software applications created
together with Seagate Software Inc. and Computer Associates Inc., both who
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support Tape Alert. The DLT drive firmware passes information from the
drives to the application. For more information on Tape Alert, consult:
http://www.hp.com/tape/tapealert/tawg.html.
While aggressively developing standards-based storage management solutions,
Compaq consistently researches new ways to improve storage management.
Cooperation with industry leaders has allowed Compaq to deliver on its
promise to manage and control accelerating information needs by providing
innovative and comprehensive solutions for enterprise storage.
Page 53
Management
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Compaq Insight Manager
Overview
Today's distributed enterprise networks are some of the most complex ever
constructed. As companies deploy more and more business-critical
applications, networks continue to rapidly expand, becoming more
sophisticated and difficult to manage. In this fast-changing environment,
manageability and management have become one of the leading success
criteria for today's highly competitive business environment.
Compaq Insight Manager is a comprehensive management tool used to
monitor and control the operation of Compaq servers and clients and
DIGITAL X86 and Alpha-based servers.
Compaq Insight Manager consists of two components:
■ A Windows-based console application.
Figure 5-1. Compaq Insight Manager Console screen
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■ Server or client-based management data collection agents.
Figure 5-2. Compaq Insight Manager Agents screen
Management agents monitor over 1,000 administrative parameters. Key
subsystems are instrumented to make health, configuration, and performance
data available to the agent software. The agents act upon that data, by
initiating alarms in the event of faults, and by providing updated management
information, such as network interface or storage subsystem performance
statistics.
Compaq Insight Manager provides real-time control over systems, with
monitoring and alerting capabilities for the critical systems in a distributed
enterprise.
Compaq Insight Manager continues the Compaq tradition of delivering
industry-leading scalability and management functionality by taking advantage
of the pervasive web style of computing to provide access to Insight Manager
Device and Configuration information from everywhere there is network
access.
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Management
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Key Features
■ Comprehensive fault management allows proactive management of
the distributed enterprise by providing advance notice of system
failures. Alarms can be sent to systems administrator via electronic mail
or pager. In addition, Windows NT monitoring capability allows faster
determination of the root cause determination of system and application
faults by being able to quickly determine if hardware or software causes
the failure event.
■ Broad configuration management gives detailed inventory collection,
Insight Version Control and Integration Server Maintenance enable
effective deployment and maintenance of consistent, manageable
configurations.
■ Performance management/resource utilization helps to determine
how servers are utilized. Does this line go with the next? he ability to
monitor and report on exceeded thresholds helps identify performance
bottlenecks and keep systems running at peak levels
■ Remote management minimizes costly downtime by supporting a full
complement of remote maintenance and control facilities that assist in
quick recovery from critical failures.
Benefits at a Glance
■ Reduces system management cost by providing centralized fault,
configuration and performance information.
■ Improves operational efficiency through extensive remote
management capabilities.
■ Decreases server downtime through proactive fault management and
version control.
■ Enhances information provided by existing enterprise management
products such as HP OpenView and IBM NetView.
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Compaq Advantage
■ Most comprehensive systems management across the widest range of
operating systems.
■ Web based management for anytime - anywhere access to
management information.
■ Breadth of remote management capabilities from in-band to out-of-
band and configuration to diagnostics.
■ Predictive fault management and Pre-Failure Warranty for storage,
memory and CPU.
■ Ability to provide up-to-date version control information for server
and workstation firmware, drivers and utilities.
■ UPS management and multi-server shutdown capabilities.
■ Extensive online help documentation.
■ Integration with management software products such as BMC
Software's PATROL, Boole & Babbage Ensign, Cabletron
SPECTRUM, CA Unicenter TNG, HP OpenView, IBM NetView,
Microsoft Systems Management Server, Seagate Nervecenter Pro,
SunNet Manager and Tivoli TME 10.
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Chapter
6
Diagnostics
Compaq has developed a three-tier suite of tools to assist in troubleshooting
and diagnosing problems.
■ Tier 1: Enterprise Server ViewCompaq User Diagnostics
■ Tier 2: Storage Area Network ViewFibre Channel Fault Isolation
Utility
■ Tier 3: TL895 Library ViewCompaq Library Diagnostics C 1.01
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Tier 1: Enterprise Server View
Compaq User Diagnostics
With the introduction of Compaq User Diagnostics XE Web Based element
level diagnostics is available throughout the enterprise. A new version 2.03H
incorporating the TL895 Tape Library is available for download at
http://www.compaq.com/storageworks.
This browser or control panel-based utility provides a quick check of storage
devices including serial numbers, firmware versions, status checks, and even
firmware downloading for future enhancements.
Compaq Diagnostics for Windows Web Enabler
Utility
The Compaq Diagnostics Utility is a service tool designed to allow you to
view information about your computer’s hardware and software configuration
and perform diagnostic testing.
Compaq Diagnostics also takes advantage of the Internet and Intranet
technologies prevalent in the industry and participates as part of the Web
Based Enterprise Management (WBEM) initiative. Currently, the Compaq
Diagnostics Utility provides the following executable components: For
Microsoft Windows NT and Windows 95/98:
■ CPQDiag.ExeWindows based inspect and diagnostic utility.
■ CPQDiagR.Exeon-line configuration tool and Hyper Media
Managed Object (HMMO).
The hardware and software configuration of the computer provides insight into
potential system issues. The Compaq Diagnostics Utility delivers this critical
data, and addresses customer requirements for enhanced service tools and
higher computer availability through its comprehensive feature design:
■ On-line installation and operationNo requirement to take the
computer off-line or reboot the server in order to use the Compaq
Diagnostics Utility
■ Hardware and Software configuration capture under a single
toolGathers detailed hardware and operating system configuration
information under a single tool.
■ Perform hardware diagnosticsPerforms detailed hardware
diagnostics to identify failing computer components.
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The Compaq Diagnostics Utility now includes a web browser interface in
addition to the command-line interface. This enables remote control of the
utility and facilitates easy transfer of Compaq Diagnostic’s information from
remote machines to a service provider.
The information the Compaq Diagnostics Utility gathers is accessible from
two locations:
■ locally on the computer’s console
■ remotely or locally from a browser
This combination of features simplifies the service process and minimizes
downtime. Versions of the Compaq Diagnostics Utility are available for
Microsoft Windows 95/98 and NT. The utility is supported on all Compaq
computer products.
Compaq Diagnostics is just one part of a larger architecture that will enhance
problem resolution and support of Compaq computers. It also demonstrates the
capabilities of the WBEM initiative.
Installation
Compaq Diagnostics Utility can be installed through the SmartStart setup
process (except Windows 95/98), from the Compaq Softpaq Utility, or the
software pre-install process in the factory. The Compaq Diagnostics Utility
can only be installed on computers running Windows 95/98 or NT. The utility
is installed on the same drive as the operating system in the
<WINDIR>\CPQDiag directory.
Installation Through SmartStart
To install the Compaq Diagnostics Utility through the SmartStart setup
process, refer to the SmartStart Installation Poster
(Part Number 298138-008) included with the SmartStart kit. This method
installs operating system and Compaq products on a server. Do not use this
method to add the Compaq Diagnostics Utility to an existing system.
Installation Through Compaq Softpaq Utility
To install the Compaq Diagnostics Utility from the Compaq Softpaq Utility,
run SETUP.BAT from the Compaq Diagnostics diskettes created from
Softpaq.
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NOTE: The Compaq Diagnostics for Windows NT installation methods (except
SmartStart) are also used for Windows 95/98 installation.
Program Functionality
Sample Device Home Page for Compaq
Diagnostics
This web-based browser screen allows administrators to view and diagnose
devices from any Internet or Intranet console.
Figure 6-2. Compaq WBEM Device Home screen
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Compaq Diagnostics Device Test Selection
The Device Test screen allows individual components to be tested.
Figure 6-4. Device Test screen
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Compaq Diagnostics Device Test Results
Test results are immediately available to view or print.
Figure 6-6. Device Test Results screen
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User Diagnostics from the Server Control Panel
Introduction Screen
Figure 6-9. Display of Compaq Diagnostics for Windows NT
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Storage Screen
The Storage Screen displays all SCSI devices that appear to the server whether
they are Fibre Channel attached or directly attached with conventional SCSI
controllers and cables. The figure below shows the expanded view of a Fibre
Channel Tape Controller (FCTC).
Figure 6-10. Expanded view of the FCTC
The firmware revision and World Wide Name are displayed to easily identify
each device. The devices attached to each FCTC are also displayed. A unique
feature of Compaq User Diagnostics is the ability to upgrade firmware in the
FCTC. By selecting the Firmware Upgrade check box, the Firmware File
dialog box appears with the ability to enter the path and file name of the
appropriate firmware revision. By selecting Begin Testing, the firmware
upgrade procedure will commence.
NOTE: A qualified technician should perform firmware upgrades. Abnormal
interruption of the process can render the FCTC unusable.
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Tape Drive Diagnostics
By expanding the DLT Tape Drive section, the firmware revision is available,
including descriptions of SCSI Bus, Target and LUN information. This
information is very important when troubleshooting or identifying devices in
complex enterprise environments. Physical tests can also be performed by
selecting Test Unit Ready and Buffer Tests. These tests are non-destructive, do
not require moving media to the DLT Tape drives, and can quickly determine
the health of drives. For in-depth diagnostics of a suspect drive in the TL895
Tape Library, consult the TL895 Tape Library Diagnostic Software Program
User Guide
(Part Number 340967-001).
Figure 6-11. Expanded view of a DLT Tape Drive
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DLT Tape Library Diagnostic Screen
By expanding the DLT Tape Library section, firmware versions, SCSI
Identification information, and Library Element Status are displayed. In
addition to Test Unit Ready commands, a Force Inventory and Move Media
Command are available. These diagnostic routines will verify existence of
tapes and allow the testing of the robotic controller and mechanical
mechanisms within the library. Firmware upgrades are available for the
robotic controller, and should be used with extreme caution.
Figure 6-12. Expanded view of the DLT Tape Library Diagnostics screen
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Move Media Screen
The Move Media command is a good way to access the DLT Tape Library
from remote locations to determine the health of the robotic controller,
mechanical mechanisms and the Load & Unload ability of the DLT Drives.
Caution should be taken to ensure that scratch media is used in testing the
Move Media commands. Any time a tape is loaded and unloaded in a DLT
drive, there is the possibility of destroying stored data or the actual media
itself. Selections can be made to return the media to it s original position or
leave it in the drives. Care should be taken to return media to its original
position to ensure the integrity of bar code element status and application
software inventory requirements.
Figure 6-13. Move Media command screen
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Information Screens
Additional Status, Log, and Error screens are available for review of test
results. Information Icons display general system information. Full versions of
Compaq User Diagnostics and additional information are available at:
http://saturn.wins.compaq.com/Revolution/Default.htm.
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Tier 2: Storage Area Network View
Fibre Channel Fault Isolation Utility
The Fibre Channel Fault Isolation Utility (FFIU) verifies the integrity of a new
or existing FC-AL installation. When used with troubleshooting flow charts,
this utility provides fault detection and help in locating a failing device on the
FC-AL.
Each device on the FC-AL has an Arbitrated Loop Physical Address (ALPA).
The ALPA is allocated dynamicallyit can change with each power-up or as
new devices are added to the loop. The fault isolation utility indicates all
devices that are active on the FC-AL. The utility dynamically updates the
screens to show the current ALPA of each component. Additionally, a Loop
Error Histogram is displayed when specific servers or components are
highlighted to further analyze the health of individual components. The utility
analyzes Fibre Channel components including the Host Bus Adapter and the
Fibre Channel Tape Controller. The Fibre Channel Storage Hub 12 is logically
transparent to the operations of the FC-AL, but even a failed Storage Hub 12
can be detected when the Fault Isolation Utility is used in combination with
the Troubleshooting Flow Charts.
Details and Flow Charts are available in the Fibre Channel Troubleshooting
Guide (Part Number 297877-004).
Installing the Utility
The latest files for the Fibre Channel Fault Isolation Utility, as well as
information about installing the utility, are located on the Compaq SmartStart
and Support Software CD. To access these files, create a set of Compaq
diskettes from the Compaq SmartStart and Support Software CD.
Running the Utility
CD Operations
To run the Fibre Channel Fault Isolation Utility:
1.
Insert the SmartStart CD in the CD ROM drive.
2.
Select Run Fibre Channel Diagnostics.
3.
Select Next. The Windows-based utility will load automatically.
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Program Displays
The utility's main display is shown below. It displays each FC-AL from the
perspective of the server. All Fibre Host Controllers in the server are shown
with a slot number and indicate a PCI (/P) or EISA (/E)
NOTE: The Enterprise Backup Solution only supports PCI Host Bus Adapters to
ensure adequate performance.
Each Fibre Channel Array and Fibre Channel Tape Controller is shown as a
branch of the Fibre Host Controller that it is connected to. The Arbitrated
Loop Physical Address (ALPA) is shown for each Fibre Channel Controller.
Figure 6-14. The Fibre Channel Fault Isolation Utility’s Main Display
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Display of a Fibre Channel Tape Controller
The Fibre Channel Fault Isolation Utility displays detailed information about
any Fibre Channel Tape Controller connected to the FC-AL. The figure below
shows a Fibre Channel Tape Controller selected, with detailed information
about this tape controller displayed to the right. A Fibre Channel Disk Array
Controller is also shown on a separate FC-AL.
Figure 6-15. Detailed information Displayed about a Tape Controller
The information displayed in the data field includes:
■ Vendor ID: Identifies the vendor of the target controller
■ Product ID: Identifies the product
■ Product Revision: Revision level of the product
■ World Wide Name: A unique identifier in a Fibre Channel system,
different for each Fibre Channel Component.
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There is no correspondence between the order in which Fibre Channel target
controllers appear on this screen and how they are physically connected on the
FC-AL. The display shows the Fibre Channel target controllers are connected
to the same FC-AL as the Fibre Channel Controller indicates.
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Loop Error Histogram Display
The Loop Error Histogram indicates errors detected on the FC-AL when a
Fibre Channel Host Controller is highlighted. Each bar represents a 3 second
period of activity. The histogram scrolls from right to left. The figure below
shows a single error period. Notice that FC-AL errors do not update the
histogram unless a Fibre Channel Host Controller is highlighted. This occurs
because the server's only view of the FC-AL is through the Fibre Channel Host
Controller, yielding no real indication of where the source of errors may be.
When errors are displayed, individual components may be disconnected from
the FC-AL to determine the failing cable, GBIC, or component. The flow
charts in the Troubleshooting Guide help you through this process.
Figure 6-16. The Loop Error Histogram, showing a single 3 second error
interval
Selecting the server causes the sum of all errors on all FC-ALs to be displayed.
Selecting a different Fibre Channel Host Controller will display the errors
associated with that FC-AL.
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Display of a FC-AL with a Missing Fibre Channel
Tape Controller
The figure below shows a Fibre Channel Host Controller highlighted with a
Fibre Channel Tape Controller missing. This indicates that while the Tape
Controller has become inactive on the FC-AL since the utility was started.
This could mean that it has been physically disconnected or that errors are
occurring on the FC-AL at a great enough frequency to prevent the device
from maintaining login.
If there are a large number of errors occurring in the FC-AL, the Fibre
Channel Host Controller may not be able to communicate with the Fibre
Channel Tape Controllers on the FC-AL. In this case, the Fibre Channel
Controllers may appear to be offline in the program, although in reality they
are physically connected to the FC-AL. When a FC-AL shows errors, the Fibre
Channel Array and Tape Controllers may alternate between being logged-on
the FC-AL or missing.
Figure 6-17. Display of a FC-AL with a Fibre Channel Tape Controller
shown as missing
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Uninitialized Fibre Channel Arbitrated Loop Display
In the figure below, the FC-AL connected to the Fibre Channel Host
Controller in Slot 1 has not initialized. This can be derived from the Fibre
Channel Host Controller having the default ALPA of 255. If this controller
was already initialized as part of an FC-AL, it would have a valid ALPA.
Figure 6-18. Display showing uninitialized FCTC in Slot 1
Information and Updates
For more information on Fibre Channel Arbitrated Loop, see additional
whitepapers at: http:www.compaq.com/support/techpubs/whitepapers.
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Tier 3: TL895 Library View
Compaq Library Diagnostics C1.01
The TL895 Tape Library is shipped with a
diskette containing an advanced diagnostic
program. The program is DOS-based and
can be run from any laptop or from a DOS
Window from any NT server. A serial cable
is supplied with the library to connect to a
port at the rear of the library.
This detailed diagnostic program allows
calibration, configuration and individual
component testing of the TL895 Tape
Library.
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Compaq Library Diagnostics Program Functionality
Main Menu
Figure 6-19. Diagnostic Software main menu
The main menu screen displays six categories of diagnostic functions:
■ User Test
■ System
■ Status
■ Move Actuators
■ Align/Calibrate
■ Config
To navigate the main menu:
1.
Use the left and right arrows to highlight one of the diagnostic
categories.
2.
When the category is highlighted, press Enter to select it. A drop-down
menu appears listing the available options. See the menu structure on
the next page.
3.
To execute an option, highlight it and press Enter. Press Esc to exit any
submenu or popup window.
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Menu Structure
Loop Mode
Set Loop Count
Track Mode
User Input Cmd
PP.TST
PP1.TST
Actuator Status
Report Statistics
Reset Statistics
Sys Test Info
System Info
Display Serial #
Element Status
Calibrate
Library SCSI ID
Report Lib SCSI ID
Drive SCSI ID
Reset Drive
Report Drive
Bin Position
Drive Position
Load Port Position
Loop Mode
Set Loop Count
Exercise Horizontal
Exercise Vertical
Exercise Extension
Exercise Gripper
Pick/Place All
Report Calibrations
Bin Sys Test
Bin/Drive Sys Test
Random Sys Test
Random Bin Sys Test
Random Bin/Drive
Sys Test
Abort Command
Self Test All
Home All
Horizontal Axis
Vertical Axis
Extension Axis
Gripper
Drive Door
Load Port
Unload Tape
Move Cartridges
Barcode Cartridges
Configure System
Report System
Init Inventory
Init Non-Vol Ram
Recovery
Auto Drive Unload
Barcode Retries
Auto Inventory
No Barcode
Clean Tape
STANDBY Mode
Flash Download
Configuration
Align/Calibrate
MAIN MENU
Move Actuators
Status
System
User Test
Figure 6-20. Diagnostic Software menu options
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Configuration Screen
The Config menu lets you:
■ Set or display the overall library configuration
■ Initialize an inventory sequence, NVRAM, or the bar code scanner
■ Enable or disable recovery options or the tape cleaning feature
■ Perform a flash download
■ Enable or disable bar code reading and set number of retries
■ Enable or disable Autodrive Unload feature
■ Go into Standby Mode or Line Mode
Figure 6-21. Configuration menu
More Information
For detailed information on Compaq Library Diagnostics, see the TL895 Tape
Library Diagnostic Software Program and User Guide
(Part Number 340967-001).
Page 80
Index
A
ALPA See Arbitrated Loop Physical
Address
Alpha-based servers 53
American National Standards
Institute (ANSI) 14
ANSI See American National
Standards Institute
Arbitrated Loop Physical
Address 69, 70
B
backup and restore
test results of, Illus. 33
backup formula
base rate 34
compression rate 34
drive number 34
backup performance
formula 34
Backup Sizing Tool 35
Backup Speed vs. Compression,
Illus. 34
backup windows
calculating 31
incremental or differential
adjustment 31
tape change adjustment 31
volume calculations 31
backups
assigning percentages 30
calculating data sets 30
calculating number of tapes 30
calculating storage capacity 30
calculating total storage 30
differential, definition 30
backups
(continued)
formula 34
full, definition 30
incremental, definition 30
management software 17
sizer tool 35
speed 33
totalling percentages 30
backup and restore
formulas 29
C
cables 15
calculating tape retention 30
Compaq Diagnostics device test
selection 61
Compaq Diagnostics for Windows
NT 63
Compaq Diagnostics Utility 58
device test results 62
expanded view of FCTC 64
information screens 68
installation through Compaq
Softpaq utility 59
installation through
SmartStart 59
on-line installation and
operation 58
program functionality 60
sample WBEM homepage 60
tape drive diagnostics 65
TL895 Tape Library Diagnostic
Software Program User
Guide 65
Compaq Download Facility,
telephone number 8
Page 81
Index 81
Compaq Insight Manager 10, 51, 53
administrative parameters 54
agents screen 54
benefits at a glance 55
broad configuration
management 55
Compaq advantage 56
comprehensive fault
management 55
console screen 53
integration with management
software products 56
operational efficiency 55
performance
management/resource
utilization 55
remote management 55
server downtime 55
system management cost 55
Compaq Insight Manager XE 51
Compaq Library Diagnostics 76
configuration screen 79
main menu 77
menu structure 78
TL895 Tape Library Diagnostics
Software Program and User
Guide 79
Compaq Storage Options
Documentation Library 20
Compaq StorageWorks Enterprise
Backup Solution 29
Compaq StorageWorks Enterprise
Backup Solution
illus. 13
Compaq StorageWorks TL895
Cartridge DLT Tape Library 16
Compaq User Diagnostics
DLT Tape Library diagnostic
screen 66
Move Media screen 67
storage screen 64
Compaq User Diagnostics XE 58
website 58
compression tests 33
Computer Associates
ARCserveIT 17
CPQDiag.Exe 58
CPQDiagR.Exe 58
D
data transfer speed 12
Differential Terminator 22
DIGITAL X86 53
69
DLT 35/70 Mini-Library
removing 26
DLT 7000 33
Documentation library
languages 20
E
EBS See Enterprise Backup Solution
EISA (/E) 70
ENSA See Enterprise Network
Storage Architecture
Enterprise Backup Solution
compatibility 27
hardware connections 25
illus. 13
integrated software solutions 17
performance levels 29
sizing 33
upgrade requirements 27
upgrading from direct
connect 25
upgrading from direct DLT 35/70
Mini-Library 26
Enterprise Network Storage
Architecture 14
FCTC
expanded view 64
F
FCTC See Fibre Channel Tape
Controller
FFIU See Fibre Channel Fault
Isolation Utility
fiber optic cables 15
Fibre Channel
cables 15
configuration 13
network 14
protocol 14
speed 14
standards 14
technology 14
Fibre Channel Fault Isolation
Utility 69
main display 70
detailed tape controller
information 71
FCTC product ID 71
FCTC product revision 71
FCTC vendor ID 71
FCTC world wide name 71
information and updates 75
installation 69
loading from CD 69
Page 82
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Fibre Channel Fault Isolation
Utility
(continued)
Loop Error Histogram
display 73
program displays 70
running 69
showing a missing Fibre Channel
Tape Controller 74
uninitialized FC-AL display 75
webpage 75
Fibre Channel Gigabit Interface
Converter 14
Fibre Channel Host Bus Adapter 14
installing 22
Fibre Channel Host Controller 12,
14
Fibre Channel loop 12
Fibre Channel Storage Hub 12 12,
15
Fibre Channel Tape Controller 12,
15
connecting to Storage Hub
12 22
Fibre Channel Troubleshooting
Guide 69
G
Gigabit Interface Converter 14
GUI 10
H
HBA See Fibre Channel Host Bus
Adapter
help
additional sources 8
Compaq Authorized Resellers,
telephone numbers 8
Compaq website 8
technical support telephone
numbers 8
Hewlett Packard 14
Hierarchical Storage Management
(HSM) 10
HMMO See Hyper Media Managed
Object
HP OpenView 55
HP Tachyon chip 14
HSM See Hierarchical Storage
Management
http://www.compaq.com 8
Hyper Media Managed Object 58
I
IBM NetView 55
Independent Software Vendors 12
Integrated Software Vendors
upgrading software 23
ISVs See Independent Software
Vendors
L
lights out tests 30
M
multimode fiber optic cable 10, 14
lengths 15
transmission distance 14
P
PCI (/P) 70
PCI Host Bus Adapter 70
primary storage feed speed 36
R
restore speed 33
S
SCSI protocol 14
Seagate Software Backup Exec 17
server
connecting to Storage Hub
12 23
sizer tool 35
compressibility 37
configuration information 44
estimating percentage
changed 40
full backup retention 41
hardware product
information 49
parameters 35
partial backups 39, 42
primary storage
configuration 36
schedule information 40, 45
server information 36
software options 38
software product information 48
solution information 43
specifying beginning and ending
times 40
specifying data backup 40
Page 83
Index 83
sizer tool
(continued)
summary information 47
tape sets 42
webpage 35
speed tests 33
Storage Hub 12 12, 15
storage management software 12
StorageWorks Command
Console 51
SWCC See StorageWorks
Command Console
symbols in text 7
T
Tape Alert 52
website See
tape retention calulation
procedure 30
tape retention policies 30
technical support
Compaq website 8
telephone numbers 8
telephone numbers
Compaq Authorized Resellers 8
Compaq Download Facility 8
technical support 8
TL895 Tape Library
application software 10
adding to the EBS 21
applying power 23
backup performance 16
benefits 10
cabling requirements 10
TL895 Tape Library
(continued)
capacity 12
centralized data repository 10
compressed capacity 12
connecting to the FCTC 22
enhanced cabling system 10
figure 9
footprint 10
GUI control panel 10
increased capacity 10
increased investment
protection 10
increased performance 10
increased scalability 10
installation instructions 22
maximum capacity 16
post installation procedures 23
preparing for operation 23
reliability 10
scalability 29
three primary enhancements 10
Unpacking & Installation Guide
Instruction manual 18
user guide 19
W
WBEM See Web-based Enterprise
Management
Web-based Enterprise
Management 51
websites 28
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