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Chapter 1 35
Hard Disk Drive Interface
Item HITACHI
Model Name HTS541010G9AT00
Capacity (GB) 100
Bytes per sector 512
Logical heads 16
Logical sectors 63
Configuration
Interface ATA-6
Capacity (GB) 100 / 80 / 60 / 40
Sector size (Bytes) 512
Recording zones 16
Data heads (physical) 4 / 4 / 3 / 2
Data disks 2 / 2 / 2 / 1
Max. areal density (Gbits/sq. inch) 86 / 70 / 70 / 70
Performance
Data buffer (MB) 8
Rotational speed (RPM) 5400
Latency average (ms) 5.5
Media transfer rate (Mbits/sec, max) 493
Interface transfer rate (MB/sec, max) 100 Ultra DMA mode-5
16.6 PIO mode-4
Seek time (read, typical)Average (ms) 12
Reliability
Load/Unload cycle 600,000
Power
Requirement +5VDC (+-5%)
Dissipation (Typical)
Startup (peak, max.)
5.0W
Read (avg.) 2.0W
Write (avg.) 2.0W
Active idle (avg.) 0.85W
Low power idle (avg.) 0.60W
Standby (avg.) 0.2W
Sleep 0.1W
Environmental
Operating
Ambient temperature
5
o
to 55
o
C
Shock (half sine wave) 300 G / 2ms, 160G / 1ms
Non-operating
Ambient temperature
-40
o
C to 65
o
C
Shock (half sine wave) 1000 G / 1 ms