Async DR failback when source data were not destroyed | Nutanix Community
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Hi,



I'm still digging into Async DR functionality.



As I understand, Async DR will replicate changed blocks from Site A to Site B at given interval from an active protection domain to an inactive protection domain.



Let's say now, I do a Site A shutdown to test the DR processes. I therefore activate site B protection domain, register the virtual machines, and boot them. So far, so good.



Now, I restart site A, and I want to fail back. I shutdown all virtual machines on site B and Site A (if any running), deactivate PD on site A, and setup replication from Site B PD to site A PD, and run a manual Sync.

Does this make sense ?



And will this copy only data changed since fail over occured ? or will it do a full sync ?
yes, that sounds about right.



cluster should only replicate data blocks that have changed, assuming Site A is "still intact" and not rebuilt (which would be the case in a true DR situation, likely)