Seagate ST1000DM003 Barracuda 7200.10 SATA Product Manual - Page 26

Table 9, for the 120 Gbyte models

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Table 9: Drive specifications summary for the 120 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 ST3120815AS ST3120215AS 120 Gbytes 234,441,648 2 1 512 63 16 16,383 732 kbits/in avg 137.259 ktracks/in avg 101 Gbits/in2 avg 7,200 RPM 930 Mbits/sec max 78 Mbytes/sec max ** 300 Mbytes/sec max PIO modes 0-4 Multiword DMA modes 0-2 Ultra DMA modes 0-6 8 Mbytes 2 Mbytes 19.99 mm (0.787 inches) 101.85 mm (4.010 inches) 146.99 mm (5.787 inches) 380 grams (0.838 lb.) 4.16 msec 7.9 sec max 7.9 sec max

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20
Barracuda 7200.10 Serial ATA Product Manual, Rev. K
Table 9:
Drive specifications summary
for the 120 Gbyte models
Drive specification
ST3120815AS
ST3120215AS
Formatted capacity (512 bytes/sector)*
120 Gbytes
Guaranteed sectors
234,441,648
Heads
2
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
2
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)
380 grams (0.838 lb.)
Average latency
4.16 msec
Power-on to ready
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