Seagate ST3300631AS ユーザーズマニュアル

4

Barracuda 7200.8 Serial ATA Product Manual, Rev. F

Formatted Gbytes (512 bytes/sector)*

400

Guaranteed sectors

781,422,768

Bytes per sector

512

Default sectors per track

63

Default read/write heads

16

Default cylinders

16,383

Recording density in BPI (bits/inch max)

763,000

Track density TPI (tracks/inch avg)

120,000

Areal density (Mbits/inch

2 

avg)

91,560

Spindle speed (RPM)

7,200

Internal data transfer rate (Mbytes/sec max)

95

Sustained transfer rate OD (Mbytes/sec)

65

I/O data transfer rate (Mbytes/sec max)

150

ATA data-transfer modes supported

PIO modes 0–4

 

Multiword DMA modes 0–2

 

Ultra DMA modes 0–6

SATA data-transfer modes supported

1.5 Gbits/sec

Cache buffer 

8 Mbytes

16 Mbytes

Height (max)

26.11 mm (1.028 inches)

Width (max)

101.85 mm (4.010 inches)

Length (max)

146.99 mm (5.787 inches)

Weight (max) grams / lb.

635 / 1.39

Average latency (msec)

4.16

Power-on to ready (typical)

10 sec

Standby to ready (typical)

10 sec

Track-to-track seek time (msec typical)

0.8 (read), 1.0 (write)

Average seek, read (msec typical)

8.0

Average seek, write (msec typical)

9.0

Startup current (typical) 12V (peak)

2.8 amps

Voltage tolerance
(including noise)

5V ± 5% 
12V ± 10%

Ambient temperature 

     0° to 60°C (op.)
–40° to 70°C (nonop.)

Temperature gradient
(°C per hour max)

20°C (operating)
30°C (nonoperating)

Relative humidity

5% to 90% (operating)
5% to 95% (nonoperating)

Relative humidity gradient

30% per hour max