Seagate ST980412AS ユーザーズマニュアル

Momentus 7200.4 SATA Product Manual, Rev. C

3

Unless otherwise noted, all specifications are measured under ambient conditions, at 25°C, and nominal 
power.

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 GB (512 bytes/sector)*

500

320

250

160

120

80

Guaranteed sectors

976,773,168

625,142,448

488,397,168

312,581,808

234,441,648

156,301,488

Bytes per sector

512

Physical read/write heads

4

3/4

2

2

1/2

1

Discs

2

2

1

1

1

1

Cache (Mbytes)

16

Recording density in BPI (max)

1490k

Track density TPI (max)

265k

Areal density (Gb/in

2 

max)

394

Spindle speed (RPM)

7200

Average latency (msec)

4.17

Internal transfer rate (Gb/s max)

1.23

I/O data transfer rate (Gb/s max)

3.0 

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 (0.370 +/- .008 in)

Width (max)

69.85 +/- 0.25 mm (2.750 +/- 0.010 in)

Length (max)

100.35 +0.20 / -0.25 mm (3.951 +0 .008 / -0.010  in)

Weight (max)

110 grams (0.238 lb)

105 grams (0.227 lb)

Power-on to ready (sec typical)

4.5

Standby to ready (sec typical)

3.0

Track-to-track seek time, read 

 

(ms typical)

1.5

Average seek, read (ms typical)

11.0

Average seek, write (ms typical)

13.0

Startup current, +5V (max)

1.0 amps

Seek power (typical)

2.2 watts