Which event triggers a SnapMirror automatic restart?

• A. an initial transfer is interrupted
• B. a manual update is interrupted
• C. a transfer interrupted by reboot
• D. a scheduled incremental update is interrupted

Answer: (D)

SnapMirror is designed to resume work automatically when an incremental update—those small, scheduled updates that keep the destination in sync—hits an interruption. If a scheduled incremental update is interrupted, the system automatically restarts that update on the next run, picking up from the last committed point. This minimizes admin effort and keeps the mirror current without having to manually restart. In contrast, an initial full transfer isn’t automatically restarted if it’s interrupted; you’d typically reinitialize or restart the initial transfer manually. Likewise, interruptions caused by manual updates require a manual restart, and a reboot doesn’t guarantee an automatic resume in the same seamless way. So the event that triggers the automatic restart is an interruption to a scheduled incremental update.