Collections on EMC Centera devices

Collections are handled differently on EMC Centera devices, as follows:

Centera collection clips are used instead of CAB files.
Savesets are collected as soon as they are archived, not according to a schedule.
A collection clip and the savesets that it contains are not deleted until there are no references to any of the savesets in the clip.

To ensure optimal archiving performance when vault store partitions on Centera devices are enabled for collection, an additional index, IX_Collection_Saveset_Partition, can be created for the Saveset table in the associated vault store database. If the index does not exist, Enterprise Vault creates it automatically when the Storage service starts provided the following conditions are satisfied:

At least one Centera vault store partition is open and enabled for collection.
The number of records in the Saveset table is less than, or equal to 1,000,000.

The space required for this index on the SQL Server hosting the relevant vault store database is approximately 27 bytes per row in the Saveset table.

For more information on this index, and instructions on how to create it manually, see the document, http://entsupport.symantec.com/docs/288036, on the Symantec Enterprise Support site.