IBM 6380 2.5 GB QIC 1/4" Cart Tape
The 2.5 GB 1/4-Inch Cartridge Tape Unit has an effective data rate of 300 Kbytes per second when operating in the QIC-2GB or QIC-1000 format, 200K bytes per second when operating in the QIC-525 format and 120K bytes per second when operating in the QIC-120 format.