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Virtualization recovery time for HA CLUSTER

How to know the recovery time in case of server failures for DELTA V virtualization HIGH AVAILABILITY CLUSTER configuration. Any calculation tool available? Any advice is welcome on how to judge.

Prasenjit Dasgupta
  • Ray Emerson
    For HA failover within a cluster, Microsoft would be the better datasource, as the functionality is based on their technology.

    For HA failover across clusters (i.e., starting a replica VM), that is a cold fail. Recovery time depends on how long it takes a user to notice and start the replica manually.

    Most MTTR requirements I've worked with recently require max 4 hours' until process can be re-started.
  • Ray Emerson

    In reply to Prasenjit Dasgupta:

    I think you'd benefit from looking into Microsoft Hyper-V Failover Clustering. There are many resources available that will give you the details you need to generate your design.

    DeltaV Virtual Studio uses a subset of Failover Clustering.
    - HA: VMs may be configured for automated failover within the same logical cluster. The VM reboots after the failover.
    - Replication/Recovery: The recovery image must be started manually.

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