Seagate ST960815A ユーザーズマニュアル

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Momentus 5400.3 PATA Product Manual, Rev. C
3
2.0
Drive specifications
Unless otherwise noted, all specifications are measured under ambient conditions, at 25°C, and nominal 
power. For convenience, the phrases the drive and this drive are used throughout this manual to indicate 
ST9160821A, ST9120822A, ST9100828A, ST980815A, ST960815A, and ST940815A model drives.
2.1
Specification summary
The specifications listed in this table are for quick reference. For details on specification measurement or 
definition, see the appropriate section of this manual.   
Table 1: 
Specifications for 160 and 120 Gbyte models
Drive specification
ST9160821A
ST9120822A
Formatted Gbytes (512 bytes/sector)*
160
120
Guaranteed sectors
312,581,808
234,441,648
Bytes per sector
512
Physical read/write heads
4
3
Discs
2
Cache (Mbytes)
8
Recording density, BPI (bits/inch typical)
835k
Track density, TPI (tracks/inch typical)
150k
Areal density (Gbits/inch
max)
132
Spindle speed (RPM)
5,400
Internal data transfer rate (Mbits/sec max)
352
I/O data-transfer rate (Mbytes/sec max)
100
ATA data-transfer modes supported
PIO modes 0–4
 
Multiword DMA modes 0–2
 
Ultra DMA modes 0–5
Height
9.5 +/-0.2 mm (0.374 +/-.008 inches)
Width
69.85 +/-0.25 mm (2.750 +/-0.010 inches)
Length
100.50 +/-0.25 mm (3.957 +/-0.010 inches)
Weight (typical)
102 grams (0.22 lb)
Average latency (msec)
5.6
Power-on to ready (sec typical)
3.0
Standby to ready (sec typical)
3.0
Track-to-track seek time (msec typical)
1.0 (read), 1.5 (write)
Average random seek , write (msec typical)
13.0
Average random seek, read (msec typical)
11.0
Average random seek, (msec typical)
12.5
Full-stroke seek (msec)
22 (typical); 24 (max)
Startup current 5V (typical)
1.0 amps