Seagate ST980813AS ユーザーズマニュアル

Momentus 7200.2 SATA Product Manual, Rev. E

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
ST9200420ASG, ST9200420AS, ST9160823AS, ST9160823ASG, ST9120823AS, ST9100821AS, 
ST980813AS and ST980813ASG 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)*

200

160

120

100

80

Guaranteed sectors

390,721,968

312,581,808

234,441,648

195,371,568

156,301,488

Bytes per sector

512

Default sectors per track

63

Default read/write heads

16

Default cylinders

16,383

Physical read/write heads

4

3

3

2

Discs

2

2

2

1

Recording density in BPI (bits/inch max)

1,014,000

853,000

Track density TPI (tracks/inch max)

162,600

155,000

Areal density (Gbits/inch

2 

max)

169.4

131

Spindle speed (RPM)

7,200

Internal transfer rate (Mbits/sec max)

850

711

Sustained transfer rate OD (Mbytes/sec)

69.5

59

I/O data transfer rate (Gb/s max)

3.0 (can also be configured for 1.5Gb/s operation)

ATA data-transfer modes supported

SATA-1

 

PIO modes 0–4

 

Multiword DMA modes 0–2

 

Ultra DMA modes 0–5

Cache buffer (Mbytes)

16

8

Height (max)

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

Width (max)

69.85 mm +/- 0.25 mm (2.75 +/- 0.00984 inches)

Length (max)

100.5 +/- 0.25 mm (3.957 +/- +/- 0.00984 inches)

Weight (max)

115 grams (0.254 lb)

Average latency (msec)

4.17 msec

Power-on to ready (typical)

4 seconds