теневая копия для резервного копирования(A shadow copy of a replica created by the DpmBackup command-line tool. In DPM, backup shadow copies are used to archive replicas to tape)
теневые копии общих папок(A Windows feature that provides access to point-in-time copies of files that are located on shared resources, such as a file server)
служба теневого копирования томов(A Windows Server 2003 technology that supports creation of single point-in-time shadow copies – also known as snapshots – of single or multiple volumes without impacting file server performance. Volume Shadow Copy Service also supports backups of open files)