Removing failed disk or disk group from vSAN cluster

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Removing failed capacity disk

In case of a failed capacity disk we can remove it using:

1. Go to Cluster -> Configure -> Disk management and view all disks in cluster. We should be able to find a failed or inaccessible disk in cluster.
2. Once the ESXi host is identified put the host in maintenance mode using "Ensure accessibility" option.
3. We can remove the failed disk using graphical remove option. This may require going to pre-check to ensure that removing it has no adverse effect. We should not have any inaccessible object after removal.

Refer:

• https://kb.vmware.com/s/article/2150593

Removing failed cache disk

In case a cache disk fails we need to remove entire disk group. For that:

1. Go to Cluster -> Configure -> Disk management and view all disks in cluster. We should be able to find a failed or inaccessible cache disk in cluster.
2. Once the ESXi host is identified put the host in maintenance mode using "Ensure accessibility" option.
3. We can remove the disk group which has failed cache disk using graphical remove disk group option

Refer:

• https://docs.vmware.com/en/VMware-vSphere/7.0/com.vmware.vsphere.vsan-monitoring.doc/GUID-95E5DAF9-FE36-497B-90B4-DB1CA05FE935.html

Command line removal of disk or disk-group

The above steps can be done via CLI by referring https://kb.vmware.com/s/article/2150567

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