Seagate SV35.2 SV35.2 Series PATA Product Manual - Page 12

Drive specifications summary

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Table 2: Drive specifications summary for 320, 250 and 160 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 ST3320620AV ST3250820AV 320 Gbytes 250 Gbytes 781,422,768 488,397,168 4 3 2 512 63 16 16,383 813 kbits/in max 145 ktracks/in avg 114.4 Gbits/in2 avg 7,200 RPM 1,030 Mbits/sec max 72 Mbytes/sec max 100 Mbytes/sec max PIO modes 0-4 Multiword DMA modes 0-2 Ultra DMA modes 0-6 16 Mbytes 8 Mbytes 26.11 mm (1.028 inches) 101.6 mm (4.000 inches) +/- 0.010 inches 146.99 mm (5.787 inches) 600 grams 4.16 msec 16 sec max 16 sec max

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6
SV35.2 Series PATA Product Manual, Rev. E
Table 2:
Drive specifications summary
for 320, 250 and 160 Gbyte models
Drive specification
ST3320620AV
ST3250820AV
ST3160815AV
Formatted capacity (512 bytes/sector)*
320 Gbytes
250 Gbytes
160 Gbytes
Guaranteed sectors
781,422,768
488,397,168
312,581,808
Heads
4
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
813 kbits/in max
824 kbits/in max
Track density
145 ktracks/in avg
137.259 ktracks/in avg
Areal density
114.4 Gbits/in
2
avg
101 Gbits/in
2
avg
Spindle speed
7,200 RPM
Internal data transfer rate
1,030 Mbits/sec max
930 Mbits/sec max
Sustained data transfer rate OD
72 Mbytes/sec max
80 Mbytes/sec max
I/O data-transfer rate
100 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
Height (max)
26.11 mm (1.028 inches)
20.0 mm (0.787 inches)
Width (max)
101.6 mm (4.000 inches) +/- 0.010 inches
Length (max)
146.99 mm (5.787 inches)
Weight (typical)
600 grams
345 grams
Average latency
4.16 msec
Power-on to ready
16 sec max
Standby to ready
16 sec max
Track-to-track seek time
<0.8 msec typical read,
<1.0 msec typical write
Average seek, read
17.0 msec typical
Average seek, write
14.0 msec typical
Startup current (typical) 12V (peak)
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)
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
350 Gs max at 2 msec