Seagate STM3320820A DiamondMax 21 PATA Product Manual - Page 10

Table 1, Drive specifications summary

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Table 1: Drive specifications summary for the 320 and 300 Gbyte models Drive specification Formatted Gbytes (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 I/O data-transfer rate ATA data-transfer modes supported Cache buffer Height (max) Width (max) Length (max) Weight Average latency Power-on to ready (max) Standby to ready (max) Track-to-track seek time (typical) Average seek, read (typical) Average seek, write (typical) Startup current (typical) 12V (peak) Voltage tolerance (including noise) Ambient temperature Temperature gradient Relative humidity Relative humidity gradient Wet bulb temperature (max) Altitude, operating Altitude, nonoperating (below mean sea level, max) Operational Shock Non-Operational Shock STM3320820A 320 625,142,448 4 2 512 63 16 16,383 781 kbits/in max 145 ktrakcs/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 0-5 8 Mbytes 26.1 mm (1.028 inches) 101.6 mm (4.000 inches) +/- 0.010 inches 146.99 mm (5.787 inches) 635 grams 4.16 msec 15 sec 15 sec

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DiamondMax 21 PATA Product Manual, Rev. B
Table 1:
Drive specifications summary
for the 320 and 300 Gbyte models
Drive specification
STM3320820A
STM3300620A
Formatted Gbytes (512 bytes/sector)*
320
300
Guaranteed sectors
625,142,448
586,072,368
Heads
4
3
Discs
2
Bytes per sector
512
Default sectors per track
63
Default read/write heads
16
Default cylinders
16,383
Recording density
781 kbits/in max
Track density
145 ktrakcs/in avg.
Areal density
114.4 Gbits/in
2
avg
Spindle speed
7,200 RPM
Internal data transfer rate
1,030 Mbits/sec max
Sustained data transfer rate
72 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 0–5
Cache buffer
8 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
635 grams
600 grams
Average latency
4.16 msec
Power-on to ready (max)
15 sec
11 sec
Standby to ready (max)
15 sec
Track-to-track seek time (typical)
<0.8 msec (read),
<1.0 msec (write)
Average seek, read (typical)
<11.0 msec
Average seek, write (typical)
<12.0 msec
Startup current (typical) 12V (peak)
2.8 amps
Voltage tolerance (including noise)
5V ± 5%
12V ± 10%
Ambient temperature
0° to 60°C (operating)
–40° to 70°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 (max)
37.7°C (operating)
37.7°C (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 G at 2 msec
Non-Operational Shock
350 G at 2 msec