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ReadyDR major difference in source snapshot size and destination ReadyDR backup size.
ReadyDR sounds like a great idea for additional backup security. Backup the source server snapshots with ability to restore from those only offers more options than were there prior. Setup was okay o...
The space consumed by snapshots in the volume usage chart in the web admin UI refers to the space consumed by old versions of files and deleted files. The snapshot also includes current data, but as the data is current it's not part of the snapshot usage part of the usage chart. When you backup a snapshot you're backing up both the current data included in that snapshot and the old versions of files and deleted files that were present when that snapshot was taken.
Thanks for the reply. So, let me see if i understand this and please forgive as I didnt find that too easy to totally understand. The ReadyDR 'backup' is in fact not just the snapshot data of the specified share on the source NAS, it's all the file data AND the snapshot data of the specified source share on the NAS copied to the destination ReadyDR created share that was set up during the creation of the ReadyDR backup job. Is this right?
When you backup a snapshot that snapshot contains current data that hasn't changed since the snapshot was taken and data in the snapshot that is no longer present/has changed.
The same data may be shared by all snapshots and current data so backup history can be stored efficiently on the ReadyDR backup destination.
mdgm wrote:
When you backup a snapshot that snapshot contains current data that hasn't changed since the snapshot was taken and data in the snapshot that is no longer present/has changed.
What makes this hard to explain is that that data held in common with the main share is counted as being in the main share by the file system. But if you are backing that snapshot up (without backing up the main share), then the data held in common becomes part of the snapshot.
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