This article is from the storage FAQ part1, by Rodney D. Van Meter with numerous contributions by others.
35 GB on a cartridge (uncompressed), 5 MB/sec. transfer rate. Drives available in limited quantities now, general availability was targetted for June/July '96, but still apparently months away? (Alex Brill, firstname.lastname@example.org, 1996/2/23, updated rdv, 96/7/8)