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


Name:

3480, 3490, 3490E
Media: 3480, 3490E
Drives: 3480, 3490, 3490E

Photo: 3480
Size: 4.25" W x 4.95" L x 1.0" T
Tape types: 3480/90 18 track
3490E 36 track
Notes:
  1. 3480 drives write 18 tracks to 3480 media, uncompressed.
  2. 3490 drives write 18 tracks to 3480 media, compressed.
  3. 3490E drives write 36 tracks to 3490E media, either uncompressed or compressed.
Recording Format Media Tracks Capacity
3480 3480   575' 18 210 MB (1)
3490 (compressed) 3480   575' 18 400 MB (1)(2)
3490E (uncompressed) 3490E 1100' 36 800 MB (3)
3490E (compressed) 3490E  1100' 36 1600 MB (2)(3)
(1) There are also extra length 3480 tapes available.
(2) Capacity depends on compression of data. Figures are for 2:1 compression.
(3) 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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