Thanks for the reply Mark, that confirms our understanding. Glad we're not the only people asking for VSS support!

Microsoft only added this functionality to Linux VMs to get around the lack of a VSS-equivalent technology in Linux.

They expect Windows applications to be compatible with VSS.

We have previously opened a request for InterSystems to add VSS support to Caché but I don't believe progress has been made on it.

Am I right in understanding that IF we are happy with crash-consistent backups, as long as a backup solution is a point-in-time snapshot of the whole disk system (including journals and database files) then said backup solution should be safe to use with Caché?

Obviously application consistent is better than crash consistent, but with WIJ in there we should be safe.