VSAN rebuild logic and thresholds

VSAN object rebuilds due to a disk fault or failure

Internally, VSAN will initiate a rebuild of degraded components according to a schedule or in the event of a failure. Should a disk or disk group fail, the components on the affected disks will be immediately rebuilt if there is adequate capacity and enough nodes to comply with the policy decisions applied to the affected objects.

VSAN object rebuilds due to extended outage

In the absence of a physical fault, VSAN implements rebuild logic according to internal timers. When a node goes offline and exits the cluster, VSAN will take no action for 60 minutes. After one hour has passed, VSAN will assume that the node has exited permanently or semi-permanently and will begin to rebuild any degraded objects to restore fault-tolerance to the cluster. Re-entry of the node will not be forbidden, nor will it cause any problems.

VSAN object rebuilds during maintenance

The cluster departure timer is not disabled during...