Rolling back the LUN snapshot
When single file restore is impossible or impractical, you can roll back the entire snapshot on the storage array at the data center and projected out to the branch. We recommend the following procedure for a LUN snapshot rollback.
A single file restore is to recover your deleted file from a backup or a snapshot without rolling back the entire file system to a point of time in which a file still existed in the file system. When you use the LUN rollback, everything that was written to (and deleted from) the file system is lost.
1. Set the LUN offline at the server running at the Edge.
2. Remove iSCSI initiator access from the LUN at the Core.
3. Remove the LUN from the Core.
4. Restore the LUN on the storage array from a snapshot.
5. Add the LUN to the Core.
6. Add iSCSI initiator access for the LUN at Core.
You can now access the LUN snapshot from a server on the Edge.
Keep in mind that after this process is completed, the blockstore on Edges does not have any data in the cache.