During a resync, SnapMirror will...

During a resync, SnapMirror will...

• A. Update the snapshot on the source
• B. Update the snapshot on the destination
• C. Cause data loss on the destination after base snapshot
• D. Find the newest common snapshot and remove newer information on the system where the command is run

Answer: (D)

When SnapMirror performs a resync, it doesn’t push updates to the source or simply refresh the destination’s snapshot. It looks for the most recent snapshot that exists on both sides—the newest common snapshot—and uses that as the baseline. To re-align, it removes any newer information on the destination (the system where you run the command) that isn’t part of that common snapshot. Once that baseline is established, the necessary data changes from the source are replayed to bring the destination up to date. That’s why this option is the best description: it captures finding the newest common snapshot and pruning newer data on the destination to re-sync. The other choices don't describe this baseline-based alignment process.

When SnapMirror performs a resync, it doesn’t push updates to the source or simply refresh the destination’s snapshot. It looks for the most recent snapshot that exists on both sides—the newest common snapshot—and uses that as the baseline. To re-align, it removes any newer information on the destination (the system where you run the command) that isn’t part of that common snapshot. Once that baseline is established, the necessary data changes from the source are replayed to bring the destination up to date.

That’s why this option is the best description: it captures finding the newest common snapshot and pruning newer data on the destination to re-sync. The other choices don't describe this baseline-based alignment process.