wrote: Is that really the case if you SM-S (re)sync B to A?
i don't really know - never tested it. just had a read. Worth doing a dry test on a new volume or ask NetApp to confirm. .
wrote: Let's say for example I lose A and have to re-baseline to Ca, I was under the impression that I also lose the snapshots that I want retained at Ca to support the SLA for snapshot retention.
If you loss (not temporarily stop) vol A and re baseline Ca you would loss Ca snapshots. but you will have the Cb snapshots. and if you really want - You can keep the Ca legacy volume, and just baseline to Ca1 until the retention of Ca snapshots are expired.