Tape Capacities

Cartridge Tape and DAT Capacities

Format	Capacity (max.)
QIC24	60 MB (only reads/writes QIC24)
QIC150	150 MB with 600XTD and 6150 tapes (reads QIC24, writes QIC120, and QIC150), 120 MB with 600A tapes (writes in QIC120 format), and 250 MB with 6250 tapes
DAT	1300 MB with 60-meter (1 hr) cartridge, 2000 MB with 90 meter (1.5 hr) cartridge; uses the DDS (not DataDAT) format
8mm	2093 MB with 112 meter (120 min) P6 (US) cartridge; 2279 MB with 122 meter (90 min) P5 (European) cartridge

Note: Almost all DAT drives use DDS format. 8mm tapes are also available in P6 lengths of 15, 30, 60, and 90 minutes for the U.S., and lengths of 15, 30, and 60 minutes for Europe; the P6 cartridge is for NTSC, and the P5 is for PAL. The drive must be jumpered to match the cartridge type. Table 4-2 shows maximum capacities for 9-track tapes. Note that 9-track tape capacities vary more than other types because of block size and tape length issues.

9-Track Tape Capacities

BPI	BLKSZ	200 ft Length 6'' Reel Size	600 ft Length 7'' Reel Size	2400 ft Length 10.5'' Reel Size	3600 ft Length 10.5'' Reel Size
800	512	1	3	10	15
		8192	1.8	5.5	21
		64K	2	6	23
1600	512	1.3	4	15	22
		8192	3.5	11	41
		64K	4	12	45
6250	512	3.2	10	37	56
		8192	12	37	145
		64K	15	44	175

Note: 3600-foot tapes use thin tape (1.3 mm). BLKSZ indicates block size in bytes.