HP 12000 HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 143

TSM General Guidelines, HP Enterprise Backup Solution with Tivoli Storage Manager

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Figure 62 TSM LAN-free backups 1. Data on large application servers (D-G) is backed up by TSM server via the SAN directly to the tape storage pool. 2. Data is copied from the primary tape storage pool to a copy storage pool, making a set of tapes send off-site for disaster protection. TSM General Guidelines The following TSM guidelines apply to a VLS regardless of whether deduplication is enabled or disabled: • Configuration of libraries: See the HP Enterprise Backup Solution with Tivoli Storage Manager implementation guide for details on how to configure the device drivers for HP libraries and drives, including how to set the library element numbers, install the appropriate "tsmscsi" drivers, etc. The "HP VLS" library emulation is only supported in TSM version 5.5.2.1 or higher. • Disable client compression: When configuring clients on the TSM server, HP recommends not enabling client compression. The built-in compression in the virtual library device gives better performance. In addition, the client compression prevents deduplication from operating. Therefore, when registering a new client node on the server, set the client compression setting to NO rather than CLIENT. The default value for the COMPression parameter for the REGister Node command is CLIENT. • TSM server/client performance: There are a multitude of settings available in the TSM server options file that make TSM very configurable in a wide variety of environments. However, there are a few key recommended settings shown in Table 24 (page 144) and Table 25 (page 144) to improve performance with backup and restore to tape libraries. See the IBM Tivoli Storage Manager Performance Tuning Guide for more information on server and client performance. IBM TSM 143

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Figure 62 TSM LAN-free backups
1.
Data on large application servers (D-G) is backed up by TSM server via the SAN directly to
the tape storage pool.
2.
Data is copied from the primary tape storage pool to a copy storage pool, making a set of
tapes send off-site for disaster protection.
TSM General Guidelines
The following TSM guidelines apply to a VLS regardless of whether deduplication is enabled or
disabled:
•
Configuration of libraries: See the
HP Enterprise Backup Solution with Tivoli Storage Manager
implementation guide
for details on how to configure the device drivers for HP libraries and
drives, including how to set the library element numbers, install the appropriate "tsmscsi"
drivers, etc.
The "HP VLS" library emulation is only supported in TSM version 5.5.2.1 or higher.
•
Disable client compression: When configuring clients on the TSM server, HP recommends not
enabling client compression. The built-in compression in the virtual library device gives better
performance. In addition, the client compression prevents deduplication from operating.
Therefore, when registering a new client node on the server, set the client compression setting
to NO rather than CLIENT. The default value for the
COMPression
parameter for the
REGister Node
command is
CLIENT
.
•
TSM server/client performance: There are a multitude of settings available in the TSM server
options file that make TSM very configurable in a wide variety of environments. However,
there are a few key recommended settings shown in
Table 24 (page 144)
and
Table 25 (page
144)
to improve performance with backup and restore to tape libraries. See the
IBM Tivoli
Storage Manager Performance Tuning Guide
for more information on server and client
performance.
IBM TSM
143