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Shadow Copy (also known as Volume Snapshot Service, [1] Volume Shadow Copy Service [2] or VSS [2]) is a technology included in Microsoft Windows that can create backup copies or snapshots of computer files or volumes, even when they are in use. It is implemented as a Windows service called the Volume Shadow Copy service.
Starting with VSS 2005, Microsoft added a client–server mode. In this mode, clients do not need write access to a SMB share where they can potentially damage the SS database. Instead, files must be accessed through the VSS client tools - the VSS windows client, the VSS command-line tool , or some application that integrates with or emulates ...
3.7: Default version formatted by Windows 11 Enterprise Insider Preview (build 21313 or newer) and Windows Server Insider Preview (build 20303 or newer). Also, the version shipped with the final releases of Windows Server 2022 and Windows 11. Added file-level snapshot (only available in Server 2022).
If you're asked to provide a screenshot when contacting AOL about an issue, you can use these steps for the most common operating systems. If you're using a different device, contact the manufacturer of the device for specific steps. • Capture a screenshot on iOS • Capture a screenshot on Windows • Capture a screenshot on Mac OS X
To avoid downtime, high-availability systems may instead perform the backup on a snapshot—a read-only copy of the data set frozen at a point in time—and allow applications to continue writing to their data. Most snapshot implementations are efficient and can create snapshots in O(1). In other words, the time and I/O needed to create the ...
FastCopy computer software is a file and directory copier that runs under Microsoft Windows.It was originally open-source, under the GPLv3 license, but later freeware releases reported "Due to various circumstances, distribution of the source code is temporarily suspended".
Similarly to CompactOS, Windows system directories only contain sparse files marked by a reparse point with a WOF tag, and Windows Overlay Filter driver decompresses file contents on-the-fly from the WIM image. WIMBoot is less effective than CompactOS though, as new updated versions of system files need to be written to the system partition ...
Copy-on-write (COW), also called implicit sharing [1] or shadowing, [2] is a resource-management technique [3] used in programming to manage shared data efficiently. Instead of copying data right away when multiple programs use it, the same data is shared between programs until one tries to modify it.