External backup unitsThe following table lists the external backup options that are offered by Lenovo that can be used with theSR550 in IT solutions.Note: Information provided in this section is for ordering reference purposes only. End-to-end LTO Ultriumconfiguration support for a particular tape backup unit must be verified through the System StorageInteroperation Center (SSIC):http://www.ibm.com/systems/support/storage/ssicTable 42. External backup optionsDescriptionPartnumberExternal SAS tape backup drivesIBM TS2250 Tape Drive Model H5S 6160S5EIBM TS2260 Tape Drive Model H6S 6160S6EIBM TS2270 Tape Drive Model H7S 6160S7EExternal SAS tape backup autoloadersIBM TS2900 Tape Autoloader w/LTO5 HH SAS 6171S5RIBM TS2900 Tape Autoloader w/LTO6 HH SAS 6171S6RIBM TS2900 Tape Autoloader w/LTO7 HH SAS 6171S7RExternal tape backup librariesIBM TS3100 Tape Library Model L2U 61732ULIBM TS3200 Tape Library Model L4U 61734ULSAS backup drives for TS3100 and TS3200 Tape Libraries6173 LTO Ultrium 5 SAS Drive Sled 00NA1096173 LTO Ultrium 5 Half High SAS Drive Sled 00NA1116173 LTO Ultrium 6 Half High SAS Drive Sled 00NA1176173 LTO Ultrium 7 Half High SAS Drive Sled 00WF767Fibre Channel backup drives for TS3100 and TS3200 Tape Libraries (LPe12000/LPe12002 only)6173 LTO Ultrium 5 Fibre Channel Drive 00NA1076173 LTO Ultrium 5 Half High Fibre Drive Sled 00NA1136173 LTO Ultrium 6 Fibre Channel Drive 00NA1156173 LTO Ultrium 6 Half High Fibre Drive Sled 00NA1196173 LTO Ultrium 7 Fibre Channel Drive 00WF7656173 LTO Ultrium 7 Half High Fibre Drive Sled 00WF769For more information, see the list of Product Guides in the Backup units category:https://lenovopress.com/servers/options/backup#rt=product-guideEthernet LAN switchesLenovo ThinkSystem SR550 Server 59