You can delete a datastore to remove it from an ESXi host or cluster.
From the Navigator pane, or the Objects tab, double-click and select the storage system with the datastore to be deleted.
Click the Manage tab, then click the Datastores tab.
On the Datastores tab, click the Configure Datastore icon.
Click the Delete Datastore option, then click Next.
Select the appropriate datastore(s) to delete from the tree, (if necessary, select the Delete Datastore Logical Unit check box to delete the logical unit associated with the datastore from storage), then click Next.
Review the summary details, then click Finish.NoteYou cannot delete datastores that are part of a replication pair (for example, GAD global-active device) from within UCP Advisor. An error message is generated when an attempt is made to delete a datastore that is part of a GAD pair.