Seagate DB35.4 DB35.4 Series SATA Product Manual - Page 10

Drive specifications summary

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Table 1: Drive specifications summary for 250 Gbyte model 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 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) 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) Operating temperature (Drive Case temperature) Nonoperating temperature (Ambient) Temperature gradient (max) Relative humidity Relative humidity gradient Wet bulb temperature (max) Altitude, operating Altitude, nonoperating (below mean sea level, max) Operational Shock Non-Operational Shock Vibration, operating ST3250310CS 250 Gbytes 488,397,168 2 1 512 63 16 16,383 1,049 kbits/in max 155 ktracks/in avg 163 Gbits/in2 avg 1,212 Mbits/sec max 106 Mbytes/sec max 300 Mbytes/sec max PIO modes 0-4 Multiword DMA modes 0-2 Ultra DMA modes 0-6 8 Mbytes 20.20 mm (0.794 inches) 101.6 mm (4.000 inches) 146.99 mm (5.787 inches) 382 grams (0.842 lb.) 16 sec max 16 sec max

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4
DB35.4 Series SATA Product Manual, Rev. C
Table 1:
Drive specifications summary
for 250 Gbyte model
Drive specification
ST3250310CS
Formatted capacity (512 bytes/sector)*
250 Gbytes
Guaranteed sectors
488,397,168
Heads
2
Discs
1
Bytes per sector
512
Default sectors per track
63
Default read/write heads
16
Default cylinders
16,383
Recording density
1,049 kbits/in max
Track density
155 ktracks/in avg
Areal density
163 Gbits/in
2
avg
Internal data transfer rate
1,212 Mbits/sec max
Sustained data transfer rate OD
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
8 Mbytes
Height (max)
20.20 mm (0.794 inches)
Width (max)
101.6 mm (4.000 inches)
Length (max)
146.99 mm (5.787 inches)
Weight (typical)
382 grams (0.842 lb.)
Power-on to ready
16 sec max
Standby to ready
16 sec max
Track-to-track seek time
<1.0 msec typical read;
<1.2 msec typical write
Average seek, read
<14.0 msec typical
Average seek, write
<15.0 msec typical
Startup current (typical) 12V (peak)
2.0 amps
Voltage tolerance (including noise)
5V ± 5%
12V ± 10%
Operating temperature (Drive Case temperature)
0° to 75°C
Nonoperating temperature (Ambient)
–40° to 70°C
Temperature gradient (max)
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 (max)
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 at 2 msec max
Non-Operational Shock
350 Gs at 2 msec max
Vibration, operating
5–350 Hz: 0.50 Gs
350–500 Hz:: 0.25 Gs