Maintenance and Service Guide  1-17
1.16 135-MEGABYTE FIXED DISK DRIVE BACKUP (TAPE) 
Dimensions: 
Height: 
Depth: 
Width:
1.62 in. ( 4.1 cm) 
8.50 in. (21.6 cm) 
5.75 in. (14.6 cm) 
(allow 0.375 in (0.95 cm) for installing rails)
Weight: 2.4 lb (1.1 kg)
Media: DC 600XTD streaming cartridge 
(manufactured by the 3M Corporation) or equivalent
Tape Speed: 
Read/write: 
Rewind/fast forward:
72 in. per second 
90 in. per second
Tape End-to-End Positioning Time: 
Read/write: 
Forward/reverse:
100 seconds 
  80 seconds
Track Density: 76 TPI
Number of Tracks: 18
Bytes/Blocks: 512
ECC Percentage: 6.67
Addendum 108431-001 (11-88) to 
Manual No. 108033-003