About collections and migration

Where vault store partitions are held on non-WORM devices other than EMC Centera, you can configure and schedule the collection and migration of the files that are stored in the partition.

Collection involves collecting multiple small files into much larger collection files (.cab files). Collection may give you a significant improvement in backup times. Collection is not recommended on devices that perform deduplication, as it causes loss of deduplication.

Migration involves moving the collection files onto longer term storage devices. For example, you may want to migrate older collections to cheaper, slower storage.

If you choose to use collection files you can configure the collection criteria, and optionally provide details of how and when to migrate the collection files to secondary storage. See the Administration Console help for details on setting these options.

Note:

When you use collections, an unreferenced item may remain in a .cab file for some time before it is deleted. Enterprise Vault compacts a .cab file and deletes the unreferenced items when the ratio of unreferenced items reaches a fixed level.

Other storage devices have been integrated with Enterprise Vault to enable the migration of data files. Supported devices are listed in the Enterprise Vault Compatibility Charts (http://entsupport.symantec.com/docs/276547).

For instructions on how to configure migration to the supported storage devices, see the migration articles on the Symantec support knowledge base.