TeraStation 5000 series TS5400DTeraStation 5400 TS5400RTeraStation 5400R TS5800DNBusiness Class Eight-Bay NAS Device TS5800DN TS5600DNBusiness Class Six-Bay NAS Device TS5600DN TS5400DNBusiness Class Four-Bay NAS Device TS5400DN TS5400RNBusiness Class Four-Bay NAS Device TS5400RN TS5800DTeraStation 5800 TS5600DTeraStation 5600 TS5200DTeraStation 5200