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    DR - Failback Scenario

    Scheduled Pinned Locked Moved Xen Orchestra
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    • H Offline
      hmihov
      last edited by hmihov

      Hi,

      We are exploring DR scenarios currently. We have multiple XO Pools on different Geo locations. So far we've been doing Continuous Replicas from Pool A to Pool B.
      We have had few isolated incidents where we had to turn on the replica, but we've not had the need to failback to the original machine (sync changes back).

      In an event of failure of the Pool A (data center A), we can quickly turn on all replicas as they'll be replicated in Pool B - Great ! However, we don't see any automated way for the failback process (going from Pool B to Pool A, after Pool A is recovered)

      So far we are thinking to have additional Continuous Replication jobs, going from Pool B to Pool A, in case we failover to Pool B. Though that would mean that we'll have to delete the VMs in Pool A, and do a full replica, which will take a long time, as well as bandwidth.

      Is there any right / approved way of setting up the continuous replicas for disaster recovery with a failback option which doesn't need to do a full replica ?

      Hristo

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      • olivierlambertO Online
        olivierlambert Vates 🪐 Co-Founder CEO
        last edited by olivierlambert

        Hi,

        Indeed, there's no existing way to reverse a CR after an incident on the "source site". That's because it's a complicated topics, depending on many variables.

        See https://github.com/vatesfr/xen-orchestra/issues/2154

        If you have a subscription for your XCP-ng+XO infrastructure, we might reconsider this to create something tailored to your need, please open a support ticket in that case.

        julien-f created this issue in vatesfr/xen-orchestra

        closed Ability to reverse a CR/DR job #2154

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        • H Offline
          hmihov @olivierlambert
          last edited by

          Hi @olivierlambert,
          Thank you for the quick reply.

          It is indeed complicated process and we're trying to work around it. We do have only XO premium subscription.
          We haven't considered licensing the hypervisors yet.

          I guess we'll have to look at manual replica jobs to failback for now.

          Hristo

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          • olivierlambertO Online
            olivierlambert Vates 🪐 Co-Founder CEO
            last edited by

            Keep us posted, we can offer more when you have the whole stack under subscription (and we'll have new offers in the next months in that way)

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            • H Offline
              hmihov @olivierlambert
              last edited by

              That's great, we'll be watching the space.

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