In my office we have about 20 laptop users.  We have roaming profiles
for the user's desktop and offline files for the user's My Documents
folder, so all of that data is taken care of automatically.  However,
we impose a 100MB quota limit on the user's desktops and eventually the
user will start saving stuff on the root of the C drive.  We don't want
people to use USB keys because they're easily lost and we're tired of
paying for replacements and dealing with lost project data.  At the
same time we want to be able to save the data that's on the root of the
C drive.

I would prefer something where we make a one-time snapshot of the
laptop's entire harddrive and then backup software would just modify
that snapshot with the changed files when the laptop is back on the
office's local network.

Or a piece of software that will detect when the laptop is back on the
office's local network and then start backing up certain files and
folders on the C drive to a server.

In a perfect world I would prefer that the user isn't interrupted by
the transfer and that the backup asynchronous and utilizes the unused
bandwidth on the network kind of like how Windows BITS does.

Any suggestions?
Thanks!

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