4 Replies Latest reply on May 9, 2019 7:18 AM by aca_itm

    vSAN rebuild

    aca_itm Lurker


      I need some advice. I have 4 servers with hypervisor esxi 6.0 . We use vSAN. But now I need to move all four servers on different location and of course we mustn't have downtime. Network is set up.

      So my question is can I move one by one server?. Is there any chance to lose my vSAN?

        • 1. Re: vSAN rebuild
          sk84 Expert

          It depends.


          If there is a direct network connection (layer 2) between the old cluster and the new cluster, with less than 1ms latency, then you could put a host into maintenance mode, relocate it and simply turn it on again at the new location. So you could move one host after the other. But the networks must exist at both locations, the communication between all hosts and other components (vCenter) must still be possible and the latency in the vSAN network must not be higher than 1ms.


          If this is not possible because the new location is in a different street/city and there is no direct L2 connection between the sites, then I would shut down all VMs, put the servers into maintenance mode, turn them off and move all servers at once.

          • 2. Re: vSAN rebuild
            aca_itm Lurker

            there should be Layer 2 connection . but I don't know does latency is under 1ms.

            thanks for replay.

            • 3. Re: vSAN rebuild
              Jasemccarty Champion

              Since you're using vSAN 6.0/6.1/6.2 (vSphere 6.0x), you'll need to make sure you've got multicast connectivity as well.

              • 4. Re: vSAN rebuild
                aca_itm Lurker

                Mine one host has a hardware failure he cannot boot, so hole operation is stopped. VSAN fork ,HA did the job of migration vm to other hosts. Can I just that host disconnect ? there is no need for another step. host is power off..