Extended VSS Support (= Extended Volume Shadow Copy Support) is a special ViceVersa PRO feature, which includes the ability to:
To use the Extended VSS Support feature, a special ViceVersa PRO license for Windows 2008, 2003 with Extended VSS Support needs to be purchased (see buy page for more info).
The Extended VSS Support is enabled by default in the evaluation version.
A server license is needed for each server participating in a synchronization, replication or backup. Examples:
| Use | Number of Licenses |
| Replicate/Backup/Synchronize 1 server to one or more external or internal drive(s) | 1 server license |
| Replicate/Backup/Synchronize X servers to one or more external or internal drive(s) | X server licenses (one for each server) |
| Replicate/Backup/Synchronize 1 server to one or more NAS | 1 server license |
| Replicate/Backup/Synchronize X servers to one or more NAS | X server licenses (one for each server) |
| Replicate/Backup/Synchronize between 2 servers (over LAN, VPN, other) | 2 server licenses |
| Replicate/Backup/Synchronize between 10 servers (over LAN, VPN, other) | 10 server licenses |
| Replicate/Backup/Synchronize 1 PC (e.g. Win7) to 1 server (over LAN, VPN, other) with ViceVersa running on the PC | 1 PC license (Win 7, Vista, XP) |
| Replicate/Backup/Synchronize 1 server to 1 PC (over LAN, VPN, other) with ViceVersa running on the server | 1 server license |
| Replicate/Backup/Synchronize 10 PCs (e.g. Win7) to 1 server (over LAN, VPN, other) with ViceVersa running on the PCs | 10 PC licenses (Win 7, Vista, XP) |