Seagate ST9250315ASG ユーザーズマニュアル

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Momentus 5400.6 SATA Product Manual, Rev. A
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 the 
Momentus 5400.6 SATA models.
2.1
Specification summary table
The specifications listed in this table are for quick reference. For details on specification measurement or defi-
nition, see the appropriate section of this manual.
Table 1: 
Drive specifications
Drive specification
ST9500325AS
 
ST9500325ASG
ST9320325AS
 
ST9320325ASG
ST9250315AS
 
ST9250315ASG
ST9160314AS
 
ST9160314ASG
ST9120315AS
Formatted Gbytes (512 bytes/sector)*
500
320
250
160
120
Guaranteed sectors
976,773,168
625,142,448
488,397,168
312,581,808
234,441,648
Bytes per sector
512
Physical read/write heads
4
3
2
2
1
Discs
2
2
1
1
1
Cache (Mbytes)
8
Recording density in BPI (bits/inch avg)
1,490k
Track density TPI (tracks/inch avg)
265k
Areal density (Gbits/inch
avg)
394
Spindle speed (RPM)
5,400
Average latency (msec)
5.6
Internal transfer rate (Mbits/sec max)
1,175
I/O data transfer rate (Mbytes/sec max)
300
ATA data-transfer modes supported
SATA 1.0, Serial ATA Revision 2.6
 
PIO modes 0–4
 
Multiword DMA modes 0–2
 
Ultra DMA modes 0–6
Height (max)
9.5 +/- 0.2 mm (0.374 +/- .0078 inches)
Width (max)
69.85 mm +/- 0.25 mm (2.75 +/- 0.0098 inches)
Length (max)
100.35 + 0.35 / - 0.25 mm (3.957 + 0.079 / - 0.0098 inches)
Weight (max)
98.8 grams (0.218 lb)
93.5 grams (0.206 lb)
Power-on to ready (sec typical)
3.6
Power-on to ready (sec max)
3.8
Standby to ready (sec typical)
1.8
Standby to ready (sec max)
2
Track-to-track seek time, read (msec typical)
1
Average seek, read (msec typical)
14