IBM TS4500 HD2 Expansion Frame Tape Drive

The IBM 3584 TS4500 tape library Model D55 expansion frame is designed for IBM TS1060 LTO Ultrium Fibre Channel, IBM TS1050 LTO Ultrium Fibre Channel Tape Drives, and LTO data cartridges. Up to three Model D55 expansion frames may be added to the TS4500 tape library Model L55 base frame to increase LTO cartridge storage or drive capacity. Each Model D55 supports up to 970 LTO cartridge slots (up to 774 in frame 1) and up to 16 IBM LTO Ultrium 6 or 5 Tape Drives (up to 12 in frame 1). Each frame can have up to 16 logical libraries or 16 control paths (one per tape drive).