(1) (source voltage) See
Vcc.
(2) (
Volume
Shadow Copy
Service,
Volume
Snapshot
Service) A backup and restore function in Windows that makes copies of volumes (hard disks, etc.). VSS works stand-alone within the OS; for example, starting with Windows Server 2003, it is used to create incremental backups of a volume. In Windows Server 2008, a
diskshadow utility was added to allow VSS operations to be scripted. Also available in Windows client versions starting with Windows XP, VSS can be activated by third-party backup software and backup appliances. See
snapshot.