Seagate ST320LM002 User Manual

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ANUAL

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  4

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PECIFICATIONS 

Unless otherwise noted, all specifications are measured under ambient conditions, at 25°C, and nominal power. For 
convenience, the phrases the drive and this drive are used throughout this manual to indicate the following drive models:

The specification summaries listed in the following tables are for quick reference. For details on specification measurement 
or definition, refer to the appropriate section of this manual. 

Formatted capacity 

(1)

500 GB

320 GB

Guaranteed sectors

976,773,168

625,142,448

Heads

2

Disks

1

Bytes per sector

512 (logical) / 4096 (physical)

Recording density

1894 Kb/in

Track density

375 Ktracks/in avg

Areal density

705 Gb/in2 avg

Spindle speed

5400 RPM

Sustained data transfer rate OD

100 MB/s max

I/O data-transfer rate

600 MB/s max

ATA data-transfer modes supported

PIO modes 0–4 

Multiword DMA modes 0–2 

Ultra DMA modes 0–6

Cache buffer

64MB

NAND flash 

Commercial Multilevel Cell (cMLC)

8GB

Height

6.8 +/- 0.2 mm (0.268 +/-.008 in)

Width

69.85 +/- 0.25 mm (2.750 +/- 0.010 in)

Length

100.35 +0.20 / -0.25 mm (3.951 +0.008 / -0.010 in)

Weight (typical)

95 g (0.209 lb)

Average latency

5.6 ms

Startup current (typical) 5V (peak)

1.0 A

Voltage tolerance (including noise)

5V ± 5%

Operating temperature

0° to 60°C

Nonoperating temperature (Ambient)

–40° to 70°C

Temperature gradient (max)

20°C per hour max (operating) 

35°C per hour max (nonoperating)

Relative humidity

5% to 95% (operating) 

5% to 95% (nonoperating)

Relative humidity gradient

30% per hour max