Virtual Disk

A file or set of files that appears as a physical disk drive to a guest operating system. These files can be on the host machine or on the remote file system. See also physical disk.

A virtual disk is a file or set of files that appears as a physical disk drive to a guest operating system. These files can be on the host machine or on a remote file system. When you configure a virtual machine with a virtual disk, you can install a new operating system into the disk file without the need to repartition a physical disk or reboot the host.