My users all have a .PST files on their local hard disk for archiving
purposes.

I'm looking for a software that could automatically copy, once a week,
the .pst file to a network drive after outlook is shutdown.

I'm looking for something that can be used and setup without any user
intervention.

I've looked into microsoft .PST backup Add-in, but it seems to rely on
user intervention to backup the .pst and it also seems to be hard to
deploy centrally (i.e.: only works on the profile it was installed to).

So, I'm curious to see what everyone else is using out there.

Thanks