Seagate ST3250623A ユーザーズマニュアル

4

Barracuda 7200.8 PATA Product Manual, Rev. F

Formatted Gbytes (512 bytes/sector)*

400

400

Guaranteed sectors

781,422,768

781,422,768

Bytes per sector

512

Default sectors per track

63

Default read/write heads

16

Default cylinders

16,383

Recording density, BPI
(bits/in max)

763,000

Track density, TPI
(tracks/in avg.)

120,000

Areal density,
(Mbits/in

2 

avg)

91,560

Spindle speed (RPM)

7,200

Internal data transfer rate (Mbytes/sec max)

Sustained data transfer rate OD (Mbytes/sec)

65

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

100

ATA data-transfer modes
supported

PIO modes 0–4
Multiword DMA modes 0–2
Ultra DMA modes 0–5

Cache buffer

8 Mbytes

16 Mbytes

Height (mm max)

26.11 mm (1.028 inches)

Width (mm max)

101.85 mm (4.010 inches)

Length (mm max)

146.99 mm (5.787 inches)

Weight (max)

635 grams (1.39 lb.)

Average latency (msec)

4.16

Power-on to ready (sec max)

10.0 sec

Standby to ready (sec max)

10.0 sec

Track-to-track seek time (msec typical)

0.8 (read),  1.0 (write)

Average seek, read (msec typical)

<11.0

Average seek, write (msec typical)

<12.0

Startup current (typical) 12V (peak)

2.8 amps

Seek power (typical)

12.4 watts

Read/write power (typical)

12.8 watts

Idle mode (typical)

7.2 watts

Standby mode (typical)

0.8 watts

Sleep mode (typical)

0.8 watts

Voltage tolerance
(including noise)

5V ± 5%
12V ± 10%

Ambient
temperature

0° to 60°C (operating)
–40° to 70°C (nonoperating)

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

Wet bulb temperature
(°C max)

37.7 (operating)
40 (nonoperating)

Altitude, operating

–60.96 m to 3,048 m
(–200 ft. to 10,000+ ft.)