Initialization Parameters › Expanded Retention Initialization Parameters › STORGRP1 to STORGRP9

STORGRP1 to STORGRP9

STORGRP1 through STORGRP9 allow you to define up to nine tape storage groups in addition to the default group, STORGRP0.

Note: For more information, see the description of STORGRP0 earlier in this chapter.

Creating STORGRP1 through STORGRP9 in addition to the default, STORGRP0, allows you to do the following options:

• Separate reports into groups by how often they are viewed

  This organization can be used to maximize performance of the Expanded Access Server, which allows you to view from tape without loading to disk.

• Separate reports into groups by their retention requirements

  This organization lessens the need for tape consolidation.

• Use tape duplexing on some reports, not on others
• Use an alternate high-level index for certain tapes
• Use a different number of generations that are written to different tapes
• Use separate ranges of tape volumes that are used for the backup tapes

New storage groups take the default values for the several sub parameters unless explicitly entered. They do not inherit the initial values from STORGRP0.

To delete a storage group, specify it without parameters. For example, the following definition deletes STORGRP3:

STORGRP3=

The STORGRP=group-name ERO table parameter assigns reports to storage groups.

Note: For more information about tape location, see Tape Location (STORGRP) in the chapter "Expanded Retention Option."

If you define tape storage groups, assign the group containing the most reports as STORGRP1 to enhance backup cycle performance.