Incremental backups on WinNt which act like a file history ?

I would like to use a large spare drive on the company's file server for
storing a nightly backup of the file system.

However, I want this backup to be incremental every night, storing only
what's changed. And, if a file has changed, I don't want it to
overwrite the backup of the old file, I want both stored.

Then, I have a history of all the changes, deletions etc which all the
files on the system have gone through, and the ability to "restore" any
of that historical data (with a granularity of a day obviously, not
every single change down the minute).

The effect would be similar to a revision control system, except the
users of the system don't need to do all that check-in/out stuff.

Is there software available to do this ?

Thanks,

Chris