| Subject | English | Greek |
| commun. | back-up domain controller | εφεδρικός τομεακός ελεγκτήρας |
| comp., MS | backup domain controller | εφεδρικός ελεγκτής τομέα (A domain controller (DC) that receives a copy of the domain directory database from the primary domain controller (PDC). There is only one PDC or PDC emulator in a domain and the rest are backup domain controllers) |
| comp., MS | domain controller | ελεγκτής τομέα (In an Active Directory forest, a server that contains a writable copy of the Active Directory database, participates in Active Directory replication, and controls access to network resources) |
| commun. | primary domain controller | πρωτεύων ελεγκτήρας τομέα |