Specifications

Table A-33. RZ55 SCSI Hard Disk Drive Description
Weight Height Width Depth
Internal drive 3.78 kg
(8.40 lb)
82.5 mm
(3.25 in)
146 mm
(5.75 in)
208 mm
(8.20 in)
Table A-34. RZ55 SCSI Hard Disk Drive Specifications
Capacity 332.3 Mbytes
– Per surface 22.48 Mbytes
– Per track 18,432
– Per block 512 bytes
Blocks 36 per track
649,040 per drive
Spare blocks 8 per track
10,300 per drive
Transfer rate to/from media 1.25 Mbytes/sec
Bus asynchronous mode 1.5 Mbytes/sec
Bus synchronous mode 4 Mbytes/sec
Seek time <= 4 Msec track-to-track
<= 16 Msec average
<= 35 Msec maximum
Average latency 8.3 Msec
Rotational speed 3,600 RPM
Start time 20 sec maximum
Stop time 20 sec maximum
Interleave 1:1
Bus latency 600 sec maximum
Heat dissipation 32 watts maximum
Recording density (bpi at ID) 21,231
Truck density (epi) 1,075
Tracks/surface (unformatted) 1,224
Read/write heads 15
A–18 Equipment Specifications