Okay, I am setting up cross replication of snapshots between two freenas boxes and I have three questions I just can't find answers to so I hope someone can help.
Recursion
Okay, I have had my Freenas snapshot both ways and when it is recursive, it created a snapshot of each sub data set beside the primary tank. What advantage or disadvantage is there in recursion? I can see having a snapshot of a storage sub-unit could be helpful if you just want something out of that specific zvol or something. Is there a disadvantage?
Lifetime
So, if you set this to 2 weeks, what happens when two weeks comes for your original snapshot that got replicated that is the basis for all the other ones on your replication target? Do the replicated snapshots not expire? I have this feeling that I still don't understand some key aspect of snapshots and replication.
Stale Snapshots
In the replication setup it has the option to delete stale snapshots. What is a stale snapshot and how does it relate to the above questions? Should this be checked or not?
Thanks,
Stephen
p.s. These questions are really bugging me and holding up actually putting these units fully online.
Recursion
Okay, I have had my Freenas snapshot both ways and when it is recursive, it created a snapshot of each sub data set beside the primary tank. What advantage or disadvantage is there in recursion? I can see having a snapshot of a storage sub-unit could be helpful if you just want something out of that specific zvol or something. Is there a disadvantage?
Lifetime
So, if you set this to 2 weeks, what happens when two weeks comes for your original snapshot that got replicated that is the basis for all the other ones on your replication target? Do the replicated snapshots not expire? I have this feeling that I still don't understand some key aspect of snapshots and replication.
Stale Snapshots
In the replication setup it has the option to delete stale snapshots. What is a stale snapshot and how does it relate to the above questions? Should this be checked or not?
Thanks,
Stephen
p.s. These questions are really bugging me and holding up actually putting these units fully online.