HPE Active Peer Persistence extends synchronous Remote Copy replication across metro-distance datacenters to deliver active-active multi-site storage access and business continuity. The architecture supports two operational failover paradigms: Manual Transparent Failover (MTF) and Automatic Transparent Failover (ATF).

Manual Transparent Failover is initiated by an administrator during planned maintenance windows, migrating primary host path ownership between storage arrays without application disruption. In contrast, Automatic Transparent Failover operates continuously via an external HPE Quorum Witness appliance deployed at an independent third failure domain. In the event of an unexpected array or primary site outage, the Quorum Witness acts as an arbiter, automatically directing the surviving storage cluster to take active ownership and maintain host I/O paths transparently without administrative intervention.