NetWorker 19.7 Snapshot Management Integration Guide

Example of a restore from a snapshot backup

The following figure illustrates the data flow for a selective restore of files from a snapshot save set. The NetWorker storage node restores data from the snapshot target volume to the production source volume.

The process flow is as follows:

1. NetWorker selects the snapshots that contain the data that you want to restore. NetWorker then mounts the snapshot on the mount host.
2. If you are restoring file system data, you locate the files, file systems, or volumes that you want to restore. If NetWorker is restoring application data, it requests specific application files that are required for the recovery.
3. You specify where to restore the data on the application host or alternatively on a different host.
4. When you start the restore, NetWorker contacts the mount host and the application host or an alternative restore host.
5. NetWorker copies the data from the snapshot volume to the specified volume:
   • For a file level restore, the data restore path is over the LAN.
   • For a rollback recovery, the storage array capabilities perform the recovery from the snapshot LUNs to the production LUNs. The snapshot containing the data is not mounted on the mount host for a rollback recovery.
   • NetWorker restores the snapshot using the saveset restore. In this instance NetWorker uses the entire saveset to restore data.