Just made this and thought I'd post it in case anyone found any use for it.
Backs up a drive to a rar archive, and appends the current date and time to the filename. Requires the rar archiver cli util to be in PATH or with the batch file.
creates a file like : backup[080109-1443].rar
REM Script to backup the share to a date/time stamped archive
REM By R.R
set hour=%hour: =0%
echo Backing up ...
rar a -r backup[%day%%month%%yr%-%hour%%min%].rar r:\*.*
Dunno if someones already made something like this but thought I'd just fire it up here anyway.