Seagate BARRACUDA ST3500830AS User Manual download pdf (Page 28)

22 Barracuda 7200.10 Serial ATA Product Manual, Rev. J

Table 10: Drive specifications summary for the 80 Gbyte models

Drive specification ST380815AS ST380215AS

Formatted capacity (512 bytes/sector)* 80 Gbytes

Guaranteed sectors 156,301,488

Heads 1

Discs 1

Bytes per sector 512

Default sectors per track 63

Default read/write heads 16

Default cylinders 16,383

Recording density 732 kbits/in avg

Track density 137.259 ktracks/in avg

Areal density 101 Gbits/in

avg

Spindle speed 7,200 RPM

Internal data transfer rate 930 Mbits/sec max

Sustained data transfer rate OD (read) 78 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 2 Mbytes

Height (max) 19.99 mm (0.787 inches)

Width (max) 101.85 mm (4.010 inches)

Length (max) 146.99 mm (5.787 inches)

Weight (typical) 365 grams (0.805 lb.)

Average latency 4.16 msec

Power-on to read 7.9 sec max

Standby to ready 7.9 sec max

Track-to-track seek time <0.8 msec typical read); <1.0 msec typical write

Average seek, read <11 msec typical

Average seek, write <12 msec typical

Startup current (typical) 12V (peak) <2.0 amps

Voltage tolerance (including noise) 5V ± 5%

12V ± 10%

Ambient temperature 0° to 60°C (operating)

–40° to 75°C (nonoperating)

Temperature gradient 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 37.7°C max (operating)

40°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 350 Gs max at 2 msec

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Seagate BARRACUDA ST3500830AS User Manual Page 28

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