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VirtualBox emulates hard disks in three formats: the native VDI (Virtual Disk Image), [36] VMware's VMDK, and Microsoft's VHD. It thus supports disks created by other hypervisor software. VirtualBox can also connect to iSCSI targets and to raw partitions on the host, using
In computing, the term raw disk, [1] [2] often referred to as raw, is used to refer to hard disk access at a raw, binary level, beneath the file system level, and using partition data at the MBR. A notable example is in the context of platform virtualization , and a feature of certain virtualization software is the ability to access a hard disk ...
In computing, SPICE (the Simple Protocol for Independent Computing Environments) is a remote-display system built for virtual environments which allows users to view a computing "desktop" environment – not only on its computer-server machine, but also from anywhere on the Internet – using a wide variety of machine architectures.
Upon entering credentials, the connection broker determines the correct VM for the user based on customizable policies. Once the VM has been determined it will be made available (resuming when suspended, starting when shut down) and the user is then redirected to the client OS or, if VirtualBox is used as virtualization backend, the RDP server ...
File-based virtualization can also improve storage utilization by allowing files to be stored on devices that are not being used to their full capacity. For example, if a file server has a number of hard drives that are only partially filled, file-based virtualization can be used to store files on those drives, thereby increasing the ...
In computing, specifically in Unix and Unix-like operating systems, a raw device is a special kind of logical device associated with a character device file that allows a storage device such as a hard disk drive to be accessed directly, bypassing the operating system's caches and buffers (although the hardware caches might still be used).
VHDs are implemented as files that reside on the native host file system. The following types of VHD formats are supported by Microsoft Virtual PC and Virtual Server: Fixed hard disk image: a file that is allocated to the size of the virtual disk. Fixed VHDs consist of a raw disk image followed by a VHD footer (512 or formerly 511 bytes). [2]
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 ] with revision 5.0 in 2011, and is one of the disk ...