Seagate Laptop Thin HDD Product Manual, Rev. H
7
2.0
Drive Specifications
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.
Table 1
Drive Specifications Summary
Drive Specification
ST500LM021, ST500LM023 & ST500LM024
ST320LM010
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
1875 Kb/in
Track density
375 Ktracks/in avg
Areal density
670 Gb/in
2
avg
Spindle speed
7200 RPM
Sustained data transfer rate OD
135 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
32 MB
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
4.2ms
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
Wet bulb temperature (max)
37.7°C max (operating)
40.0°C max (nonoperating)
Altitude, operating
–304.8 m to 3048 m (–1000 ft to 10,000+ ft)
Altitude, nonoperating
(below mean sea level, max)
–304.8 m to 12,192 m (–1000 ft to 40,000+ ft)