Seagate ST98823AS ユーザーズマニュアル

Momentus 5400.2 SATA Product Manual, Rev. C

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 
ST9120821AS, ST9100824AS, ST98823AS, ST96812AS, ST94813AS and ST93811AS 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)

120

100

80

60

40

30

Guaranteed sectors

234,441,648

195,371,568

156,301,488

117,210,240

78,140,160

58,605,120

Bytes per sector

512

Default sectors per track

63

Default read/write heads

16

Default cylinders

16,383

Physical read/write heads

4

4

3

2

2

1

Discs

2

2

2

1

1

1

Recording density in BPI

 

(bits/inch max)

778k

Track density TPI (tracks/inch max)

126k

Areal density (Mbits/inch

2 

max)

98.2

Spindle speed (RPM)

5,400

Internal transfer rate

 

(Mbytes/sec max)

42

I/O data transfer rate

 

(Mbytes/sec max)

150

ATA data-transfer modes supported

SATA 1.0, SATA II

 

PIO modes 0–4

 

Multiword DMA modes 0–2

 

Ultra DMA modes 0–6

Cache buffer 

8 Mbytes

Height (max)

9.5 +/- 0.2 mm (0.374 +/- .0078 inches)

Width (max)

69.85 mm (2.75 +/- 0.0098 inches)

Length (max)

100.5 +/- 1.6 mm (3.96 +/- 0.063 inches)

Weight (typical)

100 grams (0.22 lb)

Average latency (msec)

5.56

Power-on to ready (typical)

3.5 sec

Standby to ready (typical)

3.0 sec