This article is from the storage FAQ part1, by Rodney D. Van Meter with numerous contributions by others.
MountainGate 800-556-0222 or 702-851-9393 Phone 702-851-5533 Fax in Europe: Mountaingate Data Systems Linda Radley in the UK +44-1256-464-767 (tel) +44-1256-597-48 (fax) Drive: RSP-2150, 2MB/sec sustained, 4MB/Sec burst ST-120 cartridge holds 14.5 GB ST-160 cartridge holds 18 GB See also robotics Integrated with lots of SW packages, and drive prices have come way down. I think you can now get them for less than $15K. Integrates smoothly with robotics. See http://www.nml.org/publications/NML_TR/lcmd/lcmdtoc.html for one performance evaluation. Lots of good info there, but keep in mind that the testing was conducted in 1992.