The HP StorageWorks DAT 40 SCSI Tape Drive is a dependable entry-level backup solution for smaller servers and workstations. This DDS-4 tape drive stores 40 GB of compressed data on a single cartridge at a rate of 23 GB/hr (assuming 2:1 data compression), providing an ideal balance between cost and performance. The DAT 40 SCSI Tape Drive comes in a choice of models - internal (which also fits in the 1U and 3U rack-mount kit), external, and offline hot-swap array module ( which fits into the Tape Array 5300) and hot plug variant - to suit most environments. It reads and writes DDS-4, DDS-3, and DDS-2 formats, making it compatible with many older drives. The DAT 40 tape drive is also available with a native USB 2.0 interface.