Magnetic tape - Qic & Travan

QIC Tape format

Use 1/4" mini-cartridge from the DC-2000 family.
Qic-40 and Irwin-40Mb drives still the most common.
Qic-80 and 80/120Mbyte Irwins are becoming more common with larger Hard Disks being purchased.
Qic-3010 drives go from 340MB to 800 MB
Qic-3020 drives go from 680MB to 1.6GB

Uses
- High performance backup for desktop, servers and workstations.
Features
- Capacities from 3.2GB to 20GB (Seagate Aug 98)
- Redesign of the basic Qic minicartridge
- Joint initiative between Hewlett-Packard and 3M.
- The tape cartridge is slightly larger than Qic, enabling Travan drives to remain compatible with Qic tapes, while approximately doubling the tape length.
- Tapes match Qic-wide format.
- In the Qic-80 class (120Mb uncompressed) will be able to hold 400MB (800 MB compressed).
- All Travan drives will state capacities in uncompressed terms.
- (Santalesa,R 1995, Jun)

Product characteristics (From 3M advertisement-1997 Feb)

	TR-1	TR-2	TR-3	TR-4	TR-5	TR-6
Capacity: Uncompressed Compressed	400MB 800MB	800MB 1.6GB	1.6GB 3.2GB	4GB 8GB	10GB 20GB	16GB 32GB
Data Transfer Rate	62.5KB/sec	62.5KB/sec	125KB/sec	567KB/sec	1200KB/sec	3000KB/sec
Tape Length	750ft	750ft	750ft	740ft
Tape Width	.315inch	.315inch	.315inch	.315inch	.315inch	.315inch
Tracks	36	50	50	72
Data Density	14,700ftpi	22,125ftpi	42,250ftpi	50,800ftpi
Drive interface	Floppy/parallel	Floppy/parallel	Floppy/parallel	SCSI/EIDE/Parallel
Backward Compatibility	QIC-80 (R/w) QIC-40(Read)	QIC-3010(R/w) QIC-80(Read)	QIC-3020/3010 (R/w) QIC-80 (Read)	QIC-3080/3095 (R/w) QIC-3020(Read)