I’ve been going through upgrades in the homelab and one of the changes has been to prepare for destructing an existing vSAN cluster and creating a new vSAN cluster. While going through vSAN ESA configuration, disks were not showing as available, I needed to go in and delete the existing partitions for the old vSAN cluster.
When in vSphere from a host and attempting to ‘Erase Partition’ from a storage device, we encounter the following error, below that is the error in Tasks.
SSH into the host and run the following command to verify disks are still part of a vSAN Disk Group
esxcli vsan storage list
In my case, I had all 3 disks appear, the following command removes the disks from the group. First you will need to obtain the VSAN Disk Group UUID
esxcli vsan storage remove -u <VSAN Disk Group UUID>
After running the command it will take you back to CLI prompt and you can confirm the disk group is empty by re-running the first command ‘esxcli vsan storage list’
Go back into the Storage Devices and retry the Erase Partition, I live dangerous so I did all 3 at once 🙂
It completed, validated in Tasks that partitions were updated succesfully.
Let the vSAN configurations continue.