Developer's DescriptionBy MicrosoftFacilitate the communication between storage subsystems and applications.The Volume Shadow Copy Service (VSS) is a new service in Windows XP and Windows Server 2003. It is essentially a framework facilitating communication between applications, storage subsystems, and storage management applications (including backup applications) in order to define, persist and exploit point-in-time copies of storage data. This version is the first release on CNET Download.com.