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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
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.
Table 24 (page 144)
and
Table 25 (page
IBM TSM 143
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