Photographs of computer tapes; tape specifications
media and data conversion services by Disc Interchange


Name:

3480, 3490, 3490E

Photo: 3480
Size: 4.2" W x 4.8" L x 1.0" T
Tape types: 3480/90
3490E
Notes:
  1. 3480 and 3490 use the same media; 3490 is compressed. Both are 18 track.
  2. There are extra length 3480 tapes available.
  3. 3490E is different media; 36 track, and longer tape.
Recording Format Media Tracks Capacity
3480 3480   575' 18 210 MB
3490 (compressed) 3480   575' 18 400 MB (1)
3490E (uncompressed) 3490E 1100' 36 800 MB (2)
3490E (compressed) 3490E  1100' 36 1600 MB (1)(2)
(1) Capacity depends on compression of data. Figures are for 2:1 compression.
(2) 3490E is almost always written in a compressed format.
 
 
Please note: Although this cartridge looks very similar to a 3590, the tape inside is vastly different and the tapes cannot be read by a 3590 drive.   See 3590 media for 3590 tapes.
IBM 3480, 3490, 3490E tape
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