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A virtual drive is a software component that emulates an actual disk drive, such as an optical disc drive, a floppy disk drive, or a hard disk drive. To other programs, a virtual drive looks and behaves like an actual physical device. A virtual disk may be in any of the following forms:
VHD (Virtual Hard Disk) and its successor VHDX are file formats representing a virtual hard disk drive (HDD). They may contain what is found on a physical HDD, such as disk partitions and a file system, which in turn can contain files and folders. They are typically used as the hard disk of a virtual machine, are built into modern versions of ...
Logical disk. A logical disk, logical volume or virtual disk (VD[1] or vdisk[2] for short) is a virtual device that provides an area of usable storage capacity on one or more physical disk drive (s) in a computer system. The disk is described as logical or virtual because it does not actually exist as a single physical entity in its own right.
In computer science, storage virtualization is "the process of presenting a logical view of the physical storage resources to" [1] a host computer system, "treating all storage media (hard disk, optical disk, tape, etc.) in the enterprise as a single pool of storage." [2] A "storage system" is also known as a storage array, disk array, or filer.
A disk image contains all files and data (i.e., file attributes and the file fragmentation state). For this reason, it is also used for backing up optical media (CDs and DVDs, etc.), and allows the exact and efficient recovery after experimenting with modifications to a system or virtual machine. Typically, disk imaging can be used to quickly ...
VMDK. VMDK (short for Virtual Machine Disk) is a file format that describes containers for virtual hard disk drives to be used in virtual machines like VMware Workstation or VirtualBox. Initially developed by VMware for its proprietary [1] virtual appliance products, VMDK became an open format [2][dead link] with revision 5.0 in 2011, and is ...