Single instance storage

Enterprise Vault's optimized single instance storage can provide a significant reduction in the storage space that is required for archived items. However, it can increase the network traffic between the Enterprise Vault servers and the storage devices that host the partitions.

Enterprise Vault single instance storage works on the following principles:

Figure: Sharing boundaries in a vault store group shows an example vault store group that contains five vault stores:

Note that a vault store group can have only one sharing boundary that contains multiple vault stores.

Figure: Sharing boundaries in a vault store group

Sharing boundaries in a vault store group

Single instance storage can save storage space in a number of ways:

Note:

Enterprise Vault single instance storage is not performed when items are stored to partitions that are hosted on EMC Centera devices. Enterprise Vault provides a separate device-level sharing option to take advantage of the sharing capabilities of EMC Centera devices.