Connect over SSH to any ESXi host that has VMFS store mounted.Quite for a long time I was trying to find out who uses this datastore and decided that the easiest way in my case was to delete the partition table of VMFS datastore (of course, you should do it very carefully and make sure that you are removing the right datastore). Let’s see what other files and folders remain on the VMFS datastorage:

The virtual machines have already been moved to a new datastore using Storage vMotion.

VMFS datastore is not used to store vSphere HA data, Storage DRS, logs, dumps (/vmkdump/), vSAN data (/vsantraced/), technical support data (scratch partition), or virtual machine swap files.

The datastore is not a part of the Datastore Cluster.

Storage I/O Control is disabled for datastore.

There are no virtual machine, template, snapshot or ISO image files on VMFS datastore (you must migrate your VMs to another VMFS Datastore, power off and remove them, or unregister VMs in vSphere).

According to the VMWare documentation, when removing LUN from vSphere you should check the following points: Cannot unmount volume Datastore Name VMFS “file system is busy”.īased on the error, it is clear that the VMFS datastore cannot be removed since ESXi hosts or vSphere are still using storage to write some data. The resource 'Datastore Name: MSA2000_LUN1 VMFS uuid: xxxxx-xxxxx-x-xxxxx-xxxx' is in use.

Could not unmount disk resource busy