Dell PowerVault TL4000 Dell PowerVault TL4000 Failover Configuration Guide
Dell PowerVault TL4000 Manual
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- Dell PowerVault TL4000 | Dell PowerVault TL4000 Failover Configuration
Guide - Page 1
Samples...4 LT05 Specific Requirements For Failover Support 11 Heterogeneous validated configurations 13 Configuring your Environment to Support Failover 15 Dell PowerVault™ TL2000/TL4000 Library Failover Setup 16 Take the Library Offline...16 Upgrade Library and Drive Firmware to the Latest - Dell PowerVault TL4000 | Dell PowerVault TL4000 Failover Configuration
Guide - Page 2
Half Height Yes No Yes Yes * Table 1: Dell PowerVault™ TL2000 Supported Failover Configuration Matrix *Requires a Dell PowerVault™ TL2000 library configured with two LT05 Half Height drives 2|Page 12/31/09 version 2.0 Always refer to www.dell.com\support for latest documentation and updates - Dell PowerVault TL4000 | Dell PowerVault TL4000 Failover Configuration
Guide - Page 3
. Basic Environment Configuration Requirements There are some basic configuration environments that are required in order to support the failover feature available in the Dell PowerVault™ TL2000/TL4000 library. Refer to table below for full details Important Notes: Mixed drive generations are not - Dell PowerVault TL4000 | Dell PowerVault TL4000 Failover Configuration
Guide - Page 4
installed in the host or Windows 2008 R2 installed on the host server server • Dell PowerVault™ TL4000 library device • Dell PowerVault™ TL4000\TL2000 library driver running on host server device driver /09 version 2.0 Always refer to www.dell.com\support for latest documentation and updates - Dell PowerVault TL4000 | Dell PowerVault TL4000 Failover Configuration
Guide - Page 5
port Fibre Channel HBA, two Fibre Channel switches and one Dell PowerVault™ with two Fibre Channel drives In this configuration, failover occurs if one of the following occurs: ‐ One of the drives in the library fails (hardware failure or drive is disconnected from the Fibre Channel switch) ‐ One - Dell PowerVault TL4000 | Dell PowerVault TL4000 Failover Configuration
Guide - Page 6
Dell PowerVault™ TL4000/TL2000 Failover Guide Failover configuration (one host, two HBAs, two switches, two FC drives) Main Path Failover Path Figure 2: Reference Configuration 2 Failover Reference Configuration 3: One host with dual port SAS HBAs and one Dell PowerVault™ with two SAS drives In - Dell PowerVault TL4000 | Dell PowerVault TL4000 Failover Configuration
Guide - Page 7
Dell PowerVault™ TL4000/TL2000 Failover Guide Failover configuration (one host with two HBAs, and two SAS drives) Main Path Failover Path Figure 3: Reference Configuration 3 Failover Reference Configuration 4: One Host with dual Fibre Channel HBAs, two Fibre Channel switches and a Dell PowerVault - Dell PowerVault TL4000 | Dell PowerVault TL4000 Failover Configuration
Guide - Page 8
/TL2000 Failover Guide Failover configuration (Host with dual port HBAs, two FC switches, and two FC drives) Main Path Failover Path Figure 4: Reference Configuration 4 Failover Reference Configuration 5: Two hosts with dual Fibre Channel HBAs, two Fibre Channel switches and one Dell PowerVault - Dell PowerVault TL4000 | Dell PowerVault TL4000 Failover Configuration
Guide - Page 9
event of a failure along the communication path between the host and the drive or library, but the environment manager must monitor the state of the system to ensure all the paths are active. Failover Reference Configuration 6: One host with dual port SAS HBA and one Dell PowerVault™ with a single - Dell PowerVault TL4000 | Dell PowerVault TL4000 Failover Configuration
Guide - Page 10
™ TL4000/TL2000 Failover Guide Single SAS Drive Failover Configuration (one host with two HBAs, and One SAS drive) Main Path Failover Path Figure 6: Reference Configuration 6 Failover Reference Configuration 7: One host with two Fibre Channel HBAs, one Fibre Channel switch and one Dell PowerVault - Dell PowerVault TL4000 | Dell PowerVault TL4000 Failover Configuration
Guide - Page 11
TL4000/TL2000 Failover Guide Single FC Drive Failover configuration (Two HBA adapters, One FC switch, and one FC drive) Main Path Failover Path Figure 7: Reference Configuration 7 LT05 Specific Requirements For Failover Support The introduction of LT05 drive support in the Dell PowerVault™ TL2000 - Dell PowerVault TL4000 | Dell PowerVault TL4000 Failover Configuration
Guide - Page 12
Dell PowerVault™ TL4000/TL2000 Failover Guide Failover failure or is drive disconnected from the HBA port) ‐ One of the HBA controller port fails ‐ One port in a SAS drive fails 12 | P a g e 12/31/09 version 2.0 Always refer to www.dell.com\support for latest documentation and updates - Dell PowerVault TL4000 | Dell PowerVault TL4000 Failover Configuration
Guide - Page 13
Dell PowerVault™ TL4000/TL2000 Failover Guide Failover configuration (one host with three dual port HBAs, and three SAS drives) Main Path Failover Path Figure 9: Reference Configuration 9 Important Note: This configuration can be extended up to four drives provided the host system can support - Dell PowerVault TL4000 | Dell PowerVault TL4000 Failover Configuration
Guide - Page 14
the event a SAS drive fails; failover will result on control path and data moved to the additional drive in the library The physical connection of this configuration is shown in Figure 11 14 | P a g e 12/31/09 version 2.0 Always refer to www.dell.com\support for latest documentation and updates - Dell PowerVault TL4000 | Dell PowerVault TL4000 Failover Configuration
Guide - Page 15
refer to failover configuration support matrix. • A network connection to your Dell PowerVault™ TL2000/TL4000 library for management purposes. Refer to the Dell PowerVault™ TL4000\TL2000 Tape Library User's Guide for more information • A Dell PowerVault™ TL4000\TL2000 Tape Library failover license - Dell PowerVault TL4000 | Dell PowerVault TL4000 Failover Configuration
Guide - Page 16
the instructions for taking the library offline in the Dell PowerVault™ TL2000 Tape Library and TL4000 Tape Library User's Guide. In the event you do not have a copy of this document, it can be downloaded from the Dell support site at http://support.dell.com. Upgrade Library and Drive Firmware to - Dell PowerVault TL4000 | Dell PowerVault TL4000 Failover Configuration
Guide - Page 17
will not activate the feature on the library. Please refer to the Dell PowerVault™ TL2000 tape Library and TL4000 Tape library User's Guide for instructions for navigating with the OCP. 17 | P a g e 12/31/09 version 2.0 Always refer to www.dell.com\support for latest documentation and updates - Dell PowerVault TL4000 | Dell PowerVault TL4000 Failover Configuration
Guide - Page 18
the Dell PowerVault™ TL2000 Tape Library and TL4000 Tape Library User's Guide for instructions on bringing the library back online. Backup Host Control Path Failover Setup The host system must have Microsoft Windows 2003, 2008 0r 2008 R2 (32‐ or 64‐bit). You must install the Dell PowerVault™ TL4000 - Dell PowerVault TL4000 | Dell PowerVault TL4000 Failover Configuration
Guide - Page 19
Dell PowerVault™ TL4000/TL2000 Failover Guide Note: Please follow the steps under Backup Application Setup and Support for Configuring Dual Host Bus Adapters even if your library configuration contains SAS drives or Fibre Channel direct attached drives. The configuration settings under Configuring - Dell PowerVault TL4000 | Dell PowerVault TL4000 Failover Configuration
Guide - Page 20
Configure your library per the instructions in this document Configuration is complete and library is configured in CommVault 2 Verify your library is accessible by running a small backup Job completes successfully job with a piece of scarp media Start a new backup to a single tape drive. 3 Make - Dell PowerVault TL4000 | Dell PowerVault TL4000 Failover Configuration
Guide - Page 21
considerations The failover feature requires the Dell PowerVault™ TL2000/TL4000 library device driver. The additional driver functionality results in a noticeable performance impact. 21 | P a g e 12/31/09 version 2.0 Always refer to www.dell.com\support for latest documentation and updates - Dell PowerVault TL4000 | Dell PowerVault TL4000 Failover Configuration
Guide - Page 22
all drive failures will result in a drive replacement. Replacing the drive with the same type (generation) has no effect on failover settings. Refer to the PowerVault™ TL2000 Tape Library and TL4000 Tape Library User's Guide for the drive replacement instructions. After the drive is installed, you
Dell PowerVault™ TL4000/TL2000 Failover Guide
1|
Page
12/31/09
version
2.0
Always refer to www.dell.com\support for latest documentation and updates
Dell PowerVault™ TL4000/TL2000 Failover Configuration Guide
This document describes the failover feature, outlines the supported failover configurations for the Dell
PowerVault
™
TL4000 and TL2000 products and provides instructions for configuring the library, drives,
and host server for failover.
Please note the supported configurations are closely related to the LTO drive generation and form factor
installed in the tape library. Please refer Dell PowerVault™ supported Failover configuration matrix table
1 and 2
Contents
What is Failover?
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2
Dell PowerVault™ TL2000/TL4000 Configuration Support matrix
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2
Basic Environment Configuration Requirements
..........................................................................................
3
Failover Support Configuration Details
.........................................................................................................
4
Configuration Samples
..................................................................................................................................
4
LT05 Specific Requirements For Failover Support
......................................................................................
11
Heterogeneous validated configurations
...................................................................................................
13
Configuring your Environment to Support Failover
....................................................................................
15
Dell PowerVault™ TL2000/TL4000 Library Failover Setup
..........................................................................
16
Take the Library Offline
...............................................................................................................................
16
Upgrade Library and Drive Firmware to the Latest Version
.......................................................................
16
Backup Host Control Path Failover Setup
...................................................................................................
18
Backup Application Setup and Support
......................................................................................................
18
Failover Configuration Verification
.............................................................................................................
20
Failover Test Procedure
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20
Failover Performance considerations
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21
Appendix A
‐
Recovering from a failover event
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22