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Forum Discussion
Understanding Migration using ReadyDR to new device and preserve ALL of the current snapshots
Looking to have two NAS units which are syncronized INCLUDING snapshots: I have been happily running my pro6 for many years, backed up a year ago and migrated to 6.6.0 and have continuously upgra...
ReadyDR won't preserve the snapshots on the original machine. It also doesn't create a duplicate (the ReadyDR backup needs to be restored before you can use it). It's closer to replicate in functionality than an NAS backup job.
You'd need to do this via ssh (using btrfs send and receive).
Thank you for the pointer, I will look through the forums or on general btrfs forums outside of readyNAS.
A question about readyDR, if I restore the readyDR to a new unit do I only get the most recent version or do all of the snapshots get preserved when the readyDR volume is restored.
I am thinking about disaster recovery and trying to determine if there is a path from a readyDR backup to a system which has all of the original snapshots preserved.
Thanks!
I don't think I understand the intent of the readyDR mechanism. It appears that readyDR is designed to backup all of the snapshots and that there is a "failback" (restore to original device) or "failover" (take over with the backup device) as described in:
https://kb.netgear.com/app/answers/detail/a_id/31232
What is not clear to me is if all of the snapshots are backed up (using readyDR) when I do a "failback" or "failover" do I only get the most recent snapshot or do I get all of the old snapshots?
It almost appears that using readyDR you have to select a specific snapshot to restore back to the original machine (or a single snapshot to clone in the "failover" scenerio) but that unless you go through and clone each snapshot independently only the selected snapshot will be available after the "disaster recovery".
Thank you very much for any clarification you might be able to provide.
I didn't use ReadyDR for long, as it didn't fit my needs. Instead I use rsync backup jobs for each share. Unlike you, I am not particularly interested in preserving the snapshots in the backup. Instead I use the snapshots on the destination if I want to roll back to a previous backup.
My understanding is that when ReadyDR runs, it first creates a snapshot on the source and then sends that snapshot to the destination. That is incremental (only changed blocks are sent). But I don't believe it preserves all the snapshots that are on the source.
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