In Microsoft Windows NT, a built-in group existing on all Windows NT–based servers and workstations whose members have the right to back up and restore files on the computer regardless of the permissions protecting those files. In Windows 2000, a built-in group existing on all Windows 2000–based servers and workstations. The Backup Operators built-in group is a local group with the following preassigned rights:
If you want a user to be able to back up files and directories on any domain controller in a domain, place the user in the Backup Operators group on any domain controller. Since all domain controllers share the same directory database, the user will be a member of the Backup Operators built-in group for all domain controllers. However, if you want a user to be able to back up a member server, place the user in the Backup Operators built-in group that is a local group on that particular member server.