In this scenario, you use SnapMirror to replicate Snapshot copies from a SnapVault secondary storage system to an attached local tape drive for the purposes of backup. In case of data loss on the SnapVault secondary system, you can restore a specified Snapshot copy back to the SnapVault secondary system.
Note: This scenario applies only to backup of
SnapVault secondary storage. Do not apply this configuration for any other purpose.
You need a SnapVault secondary system with an attached local tape drive. The volume on which the secondary storage qtrees reside must also be configured as a SnapMirror source volume.
You must follow this sequence of activities to set up this arrangement.
- On the SnapVault secondary/SnapMirror source system, use the snapmirror store command to copy the base Snapshot copy of the volume to tape and use the snapmirror use command to continue the copy if more than one backup tape is necessary.
- Use the snapmirror update command to manually mirror incremental updates to tape.
- In event of data loss on the SnapVault secondary storage system, convert the volume that holds the SnapVault data from its role as a SnapMirror source volume to a destination volume, mirror the tape contents back, and then convert the restored destination volume back to a regular volume again.
