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36 Chapter 1
Item Seagate
Model Name ST9100822A
Capacity (GB) 100
Guaranteed sectors 195,371,568
Bytes per sector 512P
Physical read/write heads 4
Discs
2
Caches(Mbytes) 8
Recording density, BPI (bits/Inch typical) 703,000
Track density. TPI
(track/Inch typical)
115,000
Areal density (Gbits/Inch max) 86
Rotational speed (RPM) 4200
Internal data transfer rate OD (Mbytes/sec
max.)
48.25
I/O data-transfer rate
(Mbytes/sec max.)
100
ATA data-transfer modes supported PIO modes 0-4
Multiword DMA mode:0-2
Ultra DMA mode:0-5
Track-to-track seek time (msec typical) 1.0 (read)
1.5 (write)
Average seek time
(msec typical)
12.5
Seek Power 2.3W
Read/Write Power 2.05W/2.1W
Idle mode 0.99W
Standby mode 0.2W
Sleep mode 0.2W
Voltage tolerance
(including noise)
5V %
Ambient temperature Operating:
5
o
C to 55
o
C
nonoperating:
-40
o
C to 70
o
C
Temperature gradient (
o
C per hour max,
noncondensing)
20
o
C (operating)
30
o
C (nonoperating)
Relative Humidity gradient 30% per hour max
5±