Remote Copy failover operation

A failover shifts the I/O from a primary location to a secondary location. A failover provides the host with read/write access to the volumes in the Remote Copy group on the target system.

Perform a failover if the source system becomes unavailable, or to perform maintenance on the source system.

A failover operation responds differently based on the auto synchronize policy setting.

An Auto synchronize policy is not enabled failover operation:

  • Changes the Remote Copy group Target role from Secondary to Primary-Rev.

  • Maintains the host read/write access to the volumes in the Remote Copy group on the source system.

  • Changes the DR state to Failover.

An Auto synchronize policy enabled failover operation:

  • Changes the Remote Copy group Target role from Secondary to Primary.

  • Changes the host access to read-only for the volumes in the Remote Copy group on the source system.

  • Keeps the DR state as Normal.