The process of SnapVault backup of open systems platform directories involves starting the baseline transfers, scheduling incremental transfers, and restoring data upon request.
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 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).
For more information, see the Open Systems SnapVault Installation and Administration Guide.