3.4.5.1.8 Removing Virtual Disk Objects

The server MUST maintain a list of virtual disks. Virtual disks SHOULD be removed when all of the clients release their reference to the virtual disk object. The server MUST also detect whether the basic, dynamic, or unallocated disk that has been removed is a virtual disk and remove the corresponding virtual disk object. The mechanism of detection is implementation-specific.<69>

The server MUST also maintain a list of OpenVirtualDisk objects. An OpenVirtualDisk object can be removed when all the clients release their reference to the OpenVirtualDisk object.