Seagate ST9120822AS ユーザーズマニュアル

Momentus 5400.3 SATA Product Manual, Rev. D

3

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 
ST9160821AS, ST9120822AS, ST9100828AS, ST980811AS, ST960813AS, and ST940814AS models.

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.

Formatted Gbytes

 

(512 bytes/sector)*

160

120

100

80

60

40

Guaranteed sectors

312,581,808

234,441,648

195,371,568

156,301,488

117,210,240

78,340,160

Bytes per sector

512

Physical read/write heads

4

3

3

2

2

1

Discs

2

2

2

1

1

1

Cache (Mbytes)

8

Recording density in BPI

 

(bits/inch max)

870k

Track density TPI (tracks/inch max)

150k

Areal density (Gbits/inch

2 

max)

132

Spindle speed (RPM)

5,400

Internal transfer rate

 

(Mbits/sec max)

352

I/O data transfer rate

 

(Mbytes/sec max)

150

ATA data-transfer modes supported

SATA 1.0, Serial ATA Revision 2.5

 

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 (2.75 +/- 0.0098 inches)

Length (max)

100.50 +/- 0.25 mm (3.957 +/- 0.010 inches)

Weight (typical)

100 grams (0.22 lb)

96 grams (0.21 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)