![]() ![]() Each snapshot taken creates another branch of the tree. Snapshots have parent-child relationships and form a tree. File systems continue to function just as they would on a physical machine. The file system is completely unaware of the existence of a differencing disk. All future write operations are directed to the differencing disk, leaving the original virtual hard disk in an unaltered state. When an administrator creates a storage snapshot, the underlying system creates a differencing disk that's bound to the original virtual hard disk. A differencing disk is a special type of virtual hard disk that's linked to a parent virtual hard disk. Storage snapshots are often based around the use of a differencing disk. ![]() A snapshot acts like a detailed table of contents, providing the user with accessible copies of data that they can roll back to. A storage snapshot is a set of reference markers for data at a particular point in time. ![]()
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