I have a need for a free rsync-like tool for Windows (very preferably with some sort of delta encoding) that supports synchronizing Windows ACLs and can copy open files, probably via VSS/Shadow Volumes. (I have zero budget for this, as it is a one-time project.)
Many tools come close, but fail on one or more of those accounts. I don't have a problem with a multistep procedure, but I want to avoid multiple steps to the sync. That is, I don't want to have to sync files and ACLs separately, as I don't trust that this won't get out of sync.
I found a tool,
DISKSHADOW.EXE, that is standard under Windows 2008, that allows me to create and mount a VSS Shadow Copy, so a tool that can do delta updates of changed files while supporting Windows ACLs would be sufficient.
The server I'm working on is Windows Server 2008 (not R2).