The Best Tool provided By Microsoft for its OS.
Ive Used it for :
NT - Requires manual run or u can create and run as a scheduled taks, but U can write only on tapes or on some local / mapped drive(if you are not able to save file on mapped drive then check "Folder Permsssions").
Application such as Arc serve and bakup exec can be used provided u have a valid license and drivers(they are the most important stuff to keep in safe).
Win 2000, 2000 AS, XP, 2003, 2008 etc: U can write it on Hard disk, mapped drives, Local disks and tapes.t.