Managing VMFS snapshots
Storage array management tools allow us to clone/snapshot/replicate LUN/s backing VMFS datastore/s. The snapshots are created at the storage array using the array management interface. However, it is not possible to mount an identical copy of an existing VMFS datastore to the same ESXi host. This is deliberately disallowed to avoid data corruption, unless it is backed by a different device ID.
ESXi identifies each VMFS volume using its signature denoted by a UUID (Universally Unique Identifier). The UUID is generated when the volume is first created or resignatured and is stored in the LVM header of the VMFS volume.
The command esxcli storage filesystem list can be used to list all the VMFS datastores along with their details, ...
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