Remote Copy with HPE 3PAR Peer Persistence configuration

HPE 3PAR Peer Persistence redirects host I/O from the primary to the secondary storage system transparent to the host and without application downtime. Peer Persistence allows hosts to remain online while the servicing of their I/O requests moves from one storage system in the Peer Persistence configuration to the other.

Peer Persistence uses synchronous Remote Copy groups.

Peer Persistence offers:

  • Manual transparent failover (MTF)

    A Peer Persistence MTF or manual "switchover" operation results in:

    • Failover of the host I/O for the volumes in the Remote Copy group

    • Host I/O service moves from one storage system in the Peer Persistence configuration to the other

    • Reversal in the direction of data replication

    The switching of the servicing of the I/O from one storage system to the other is nondisruptive to the server. The switchover operation facilitates service optimization and storage system maintenance activities within a high-availability data storage solution.

  • Automatic transparent failover (ATF)

    A Peer Persistence ATF operation redirects host I/O from a failed primary system to the secondary storage system transparent to the host. An ATF executes automatically by the Peer Persistence software in response to a detected failure of the primary system for a Remote Copy group.

    Peer Persistence ATF requires the configuration of a Quorum witness which provides an alternative means for the storage systems to communicate besides the Remote Copy link. This alternative communication path is necessary to ensure that a failure has occurred before an ATF can be executed.

Peer Persistence with Quorum Witness Remote Copy
More information

  • HPE 3PAR Peer Persistence Host OS Support Matrix