Seagate ST1000DM003 Barracuda 7200.10 SATA Product Manual - Page 20

Table 6, for 250 Gbyte models - rpm

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Table 6: Drive specifications summary for 250 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 (read) 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 ST3250620AS ST3250820AS 250 Gbytes 488,397,168 3 2 512 63 16 16,383 769 kbits/in avg 141 ktracks/in avg 109 Gbits/in2 avg 7,200 RPM 1,030 Mbits/sec max 72 Mbytes/sec max 300 Mbytes/sec max PIO modes 0-4 Multiword DMA modes 0-2 Ultra DMA modes 0-6 16 Mbytes 8 Mbytes 26.1 mm (1.028 inches) 101.85 mm (4.010 inches) 146.99 mm (5.787 inches) 600 grams (1.32 lb.) 4.16 msec 11 sec max 11 sec max

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14
Barracuda 7200.10 Serial ATA Product Manual, Rev. K
Table 6:
Drive specifications summary
for 250 Gbyte models
Drive specification
ST3250620AS
ST3250820AS
ST3250410AS
ST3250310AS
Formatted capacity (512 bytes/sector)*
250 Gbytes
Guaranteed sectors
488,397,168
Heads
3
2
Discs
2
1
Bytes per sector
512
Default sectors per track
63
Default read/write heads
16
Default cylinders
16,383
Recording density
769 kbits/in avg
1,049 kbits/in avg
Track density
141 ktracks/in avg
155 ktracks/in avg
Areal density
109 Gbits/in
2
avg
163 Gbits/in
2
avg
Spindle speed
7,200 RPM
Internal data transfer rate
1,030 Mbits/sec max
1,212 Mbits/sec max
Sustained data transfer rate OD (read)
72 Mbytes/sec max
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
16 Mbytes
8 Mbytes
16 Mbytes
8 Mbytes
Height (max)
26.1 mm (1.028 inches)
19.99 mm (.787 inches)
Width (max)
101.85 mm (4.010 inches)
Length (max)
146.99 mm (5.787 inches)
Weight (typical)
600 grams (1.32 lb.)
380 grams (0.838lb.)
Average latency
4.16 msec
Power-on to ready
11 sec max
7.9 sec max
Standby to ready
11 sec max
7.9 sec max
Track-to-track seek time
<0.8 msec typical read,
<1.0 msec typical write
<0.8 msec typical read,
<1.0 msec typical write
Average seek, read
<8.5 msec typical
<11.0 msec typical
Average seek, write
<10.0 msec typical
<12.0 msec typical
Startup current (typical) 12V (peak)
2.8 amps
2.0 amps
Voltage tolerance (including noise)
5V ± 5%
12V ± 10%
Ambient temperature
0° to 60°C per hour max (operating)
–40° to 70°C per hour max (nonoperating)
Temperature gradient
20°C (operating)
30°C (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)
37.7°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
68 Gs max at 2 msec
63 Gs max at 2 msec
Non-Operational Shock
350 Gs max at 2 msec