Virtual Disk Remains on a Datastore After Snapshots Referencing the Disk Are Deleted
Details
If you take a snapshot of a virtual machine, and then delete a virtual disk from the virtual machine using the VI Client, the virtual disk is not removed. The virtual disk is preserved to allow you to revert to the snapshot taken when the virtual machine still had the virtual disk.
If you delete the snapshot, the virtual disk is removed from the virtual machine's configuration file. However, the virtual disk is not removed from the datastore.
Solution
To delete the virtual disk from the datastore, use the Datastore Browser in the VI Client. For more information, see the VI Client online Help.