Hi,
Thank you for posting on our forum. I'm Michael Farquhar with the BackupAssist sales and support team.
When BackupAssist is installed on a SQL, SharePoint or Exchange server, you can use the VSS application backup and restore feature to backup the information store and databases. This feature is available in the following backup engines:
Zip
File Replication
Imaging
RSync
No additional licenses are required to use this feature besides a BackupAssist license (the RSync engine does require the RSync add-on or a RSync Standalone license ). For additional details on the VSS application backup and restore feature, just go here:
http://www.backupassist.com/education/articles/vss-application-backup-and-restore.html (Note that this feature is not available on Server 2000 systems).
RSync has two licensing models. The RSync add-on requires a BackupAssist license be present. The RSync standalone license does not require a BackupAssist license. However when using the standalone licensing model, only the RSync engine can be used. This license type is provided for clients who already have a backup solution in place and only require the RSync engine.
Please don't hesitate to contact me should you have additional queries or comments - I'd be happy to help.