Seagate DB35.4 Drive specifications summary for 250 Gbyte model, Drive specification ST3250310CS

Table 1:

Drive specifications summary for 250 Gbyte model

Drive specification

ST3250310CS

Formatted capacity (512 bytes/sector)*

250 Gbytes

Guaranteed sectors

488,397,168

Heads

2

Discs

1

Bytes per sector

512

Default sectors per track

63

Default read/write heads

16

Default cylinders

16,383

Recording density

1,049 kbits/in max

Track density

155 ktracks/in avg

Areal density

163 Gbits/in2 avg

Internal data transfer rate

1,212 Mbits/sec max

Sustained data transfer rate OD

106 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

8 Mbytes

Height (max)

20.20 mm (0.794 inches)

Width (max)

101.6 mm (4.000 inches)

Length (max)

146.99 mm (5.787 inches)

Weight (typical)

382 grams (0.842 lb.)

Power-on to ready

16 sec max

Standby to ready

16 sec max

Track-to-track seek time

<1.0 msec typical read;

<1.2 msec typical write

Average seek, read

<14.0 msec typical

Average seek, write

<15.0 msec typical

Startup current (typical) 12V (peak)

2.0 amps

Voltage tolerance (including noise)

5V ± 5%

12V ± 10%

Operating temperature (Drive Case temperature)

0° to 75°C

Nonoperating temperature (Ambient)

–40° to 70°C

Temperature gradient (max)

20°C per hour max (operating)

30°C per hour max (nonoperating)

Relative humidity

5% to 90% (operating)

5% to 95% (nonoperating)

Relative humidity gradient

30% per hour max

Wet bulb temperature (max)

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

–60.96 m to 12,192 m

(below mean sea level, max)

(–200 ft. to 40,000+ ft.)

Operational Shock

63 Gs at 2 msec max

Non-Operational Shock

350 Gs at 2 msec max

Vibration, operating

5–350 Hz: 0.50 Gs

350–500 Hz:: 0.25 Gs

4

DB35.4 Series SATA Product Manual, Rev. C