Seagate ST3500820AS ユーザーズマニュアル

6

Barracuda 7200.11 Serial ATA Product Manual, Rev. G

Drive specification

ST3640330AS

ST3640630AS

Formatted capacity (512 bytes/sector)*

640 Gbytes

Guaranteed sectors

1,250,284,896

Heads

6

Discs

3

Bytes per sector

512

Default sectors per track

63

Default read/write heads

16

Default cylinders

16,383

Recording density

1090 kbits/in max

Track density

150 ktracks/in avg

Areal density

164 Gbits/in

2 

avg

Spindle speed

7,200 RPM

Internal data transfer rate

1287 Mbits/sec max

Sustained data transfer rate OD

105 Mbytes/sec max

I/O data-transfer rate

300 Mbytes/sec max

ATA data-transfer modes supported

PIO modes 0–4

 

Multiword DMA modes 0–2

 

Ultra DMA modes 0–6

Cache buffer

32 Mbytes

16 Mbytes

Height (max)

26.1 mm (1.028 inches)

Width (max)

101.6 mm (4.000 inches) +/- 0.010 inches

Length (max)

146.99 mm (5.787 inches)

Weight (typical)

633 grams ( 1.396 lb.)

Average latency

4.16 msec

Power-on to ready

20 sec max

Standby to ready

15 sec max

Track-to-track seek time

<1.0 msec typical read;

 

<1.2 msec typical write

Average seek, read

<8.5 msec typical

Average seek, write

<9.5 msec typical

Startup current (typical) 12V (peak)

3.0 amps

Voltage tolerance (including noise)

5V +10% / -7.5%

 

12V +10% / -7.5%

Ambient temperature

0° to 60°C per hour max (operating)

 

–40° to 70°C per hour max (nonoperating)

Temperature gradient

20°C per hour max (operating)

 

30°C per hour max (nonoperating)

Relative humidity

5% to 95% (operating)

 

5% to 95% (nonoperating)

Relative humidity gradient

30% per hour max

Wet bulb temperature

37.7°C max (operating)

 

40.0°C max (nonoperating)

Altitude, operating

–60.96 m to 3,048 m

 

(–200 ft. to 10,000+ ft.)

Altitude, nonoperating 

 

(below mean sea level, max)

–60.96 m to 12,192 m

 

(–200 ft. to 40,000+ ft.)

Operational Shock

63 Gs max at 2 msec

Non-Operational Shock

300 Gs max at 2 msec