How SnapVault backup of Open Systems platforms works

The process of SnapVault backup of Open Systems platform directories involves starting the baseline transfers, scheduling incremental transfers, and restoring data upon request.

Starting the baseline transfers:

In response to command line input, the SnapVault secondary storage system requests from an Open Systems platform initial baseline image transfers of directories specified for backup. These transfers establish SnapVault relationships between the Open Systems platform directories and the SnapVault secondary qtrees.
Each Open Systems platform, when prompted by the secondary storage system, transfers initial base images of specified directories to qtree locations on the secondary storage system.
Note: There are no primary-side Snapshot copies in Open Systems SnapVault.

Scheduling incremental transfers:

The SnapVault secondary storage system, in response to command line input, follows a set of scheduled data transfers (to which, for tracking purposes, you can assign names like “sv_hourly,” “sv_nightly,” and so on).
To each secondary qtree on a given volume, from a corresponding primary directory on the Open Systems storage platform, SnapVault transfers the files that have been added or modified since the previous data transfer.

For each set of scheduled data transfers, SnapVault creates a set of incremental Snapshot copies that capture the changes to the secondary qtrees after each transfer. For each set of Snapshot copies, the SnapVault secondary storage system saves the number of secondary storage Snapshot copies you specify and assigns each Snapshot copy in the set a version number (0 for most current, 1 for second most recent, and so on).
Restore upon request: If directory or file data needs to be restored to the Open Systems storage platform, SnapVault retrieves the data from one of the retained Snapshot copies and transfers the data back to the Open Systems storage platform that requests it.
For more information, see the Open Systems SnapVault Installation and Administration Guide.

Parent topic: What SnapVault is