In a MetroCluster configuration, if a site goes offline due to a power outage, what enables automatic takeover by the partner cluster?

In a MetroCluster configuration, if a site goes offline due to a power outage, what enables automatic takeover by the partner cluster?

• A. Mediator arbitration
• B. HA takeover
• C. SnapMirror Synchronous
• D. Automatic unplanned switchover (AUSO)

Answer: (D)

When a MetroCluster pair loses a site, the system relies on Automatic Unplanned Switchover to switch operations to the partner cluster automatically. This feature detects the outage and promotes the surviving cluster to take over I/O and access to the data, so service remains available without manual intervention. SnapMirror Synchronous is about keeping data in sync across sites, not about performing the failover itself. Mediator arbitration helps prevent split-brain but does not perform the automatic takeover. HA takeover is a local failover within a single site, not the remote partner takeover used after a site outage.

When a MetroCluster pair loses a site, the system relies on Automatic Unplanned Switchover to switch operations to the partner cluster automatically. This feature detects the outage and promotes the surviving cluster to take over I/O and access to the data, so service remains available without manual intervention. SnapMirror Synchronous is about keeping data in sync across sites, not about performing the failover itself. Mediator arbitration helps prevent split-brain but does not perform the automatic takeover. HA takeover is a local failover within a single site, not the remote partner takeover used after a site outage.