Seagate ST500DM002 Barracuda 7200.11 SATA Product Manual - Page 12

Table 2, for 640 Gbyte models

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Table 2: Drive specifications summary for 640 Gbyte models Drive specification Formatted capacity (512 bytes/sector)* Guaranteed sectors Heads Discs Bytes per sector Default sectors per track Default read/write heads Default cylinders Recording density Track density Areal density Spindle speed Internal data transfer rate Sustained data transfer rate OD I/O data-transfer rate ATA data-transfer modes supported Cache buffer Height (max) Width (max) Length (max) Weight (typical) Average latency Power-on to ready Standby to ready Track-to-track seek time Average seek, read Average seek, write Startup current (typical) 12V (peak) Voltage tolerance (including noise) Ambient temperature Temperature gradient Relative humidity Relative humidity gradient Wet bulb temperature Altitude, operating Altitude, nonoperating (below mean sea level, max) Operational Shock Non-Operational Shock ST3640330AS 640 Gbytes 1,250,284,896 6 3 512 63 16 16,383 1090 kbits/in max 150 ktracks/in avg 164 Gbits/in2 avg 7,200 RPM 1287 Mbits/sec max 105 Mbytes/sec max 300 Mbytes/sec max PIO modes 0-4 Multiword DMA modes 0-2 Ultra DMA modes 0-6 32 Mbytes 26.1 mm (1.028 inches) 101.6 mm (4.000 inches) +/- 0.010 inches 146.99 mm (5.787 inches) 633 grams ( 1.396 lb.) 4.16 msec 20 sec max 15 sec max

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6
Barracuda 7200.11 Serial ATA Product Manual, Rev. G
Table 2:
Drive specifications summary
for 640 Gbyte models
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