Seagate ST3320311CS Pipeline HD.2 Series SATA Product Manual - Page 14

Table 3, for 250 and 160GB models

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Table 3: Drive specifications summary for 250 and 160GB models Drive specification Formatted capacity (512 bytes/sector)* Guaranteed sectors Heads Disks Bytes per sector Default sectors per track Default read/write heads Default cylinders Recording density (max.) Track density (avg.) Areal density (avg.) Spindle speed Internal data transfer rate (max.) Sustained data transfer rate (max.) I/O data-transfer rate (max.) ATA data-transfer modes supported Cache buffer Height (max.) Width (max.) Length (max.) Weight (typical) Average latency Power-on to ready (typical) Standby to ready (typical) Track-to-track seek time (typical) Average seek (typical) Startup current (typical) 12V (peak) Voltage tolerance (including noise) Operating temperature (drive case temperature) Non-operating temperature (ambient) Temperature gradient (max.) Relative humidity Relative humidity gradient (max.) Wet bulb temperature (max.) Altitude, operating Altitude, non-operating (below mean sea level, max.) ST3250412CS 250GB ST3250312CS 488,397,168 1 1 512 63 16 16,383 1417kb/in 236 ktracks/in 341.5Gb/in2 5900 RPM 1285Mb/s 120MB/s 300MB/s PIO modes 0-4 Multiword DMA modes 0-2 Ultra DMA modes 0-6 16MB 20.20mm / 0.795 in 101.85mm / 4.010 in 146.99mm / 5.787 in 395g / 0.871 lb 5.1ms

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8
Pipeline HD.2 Series SATA Product Manual, Rev. G
Table 3:
Drive specifications summary
for 250 and 160GB models
Drive specification
ST3250412CS
ST3250312CS
ST3160316CS
Formatted capacity
(512 bytes/sector)*
250GB
160GB
Guaranteed sectors
488,397,168
312,581,808
Heads
1
Disks
1
Bytes per sector
512
Default sectors per track
63
Default read/write heads
16
Default cylinders
16,383
Recording density (max.)
1417kb/in
Track density (avg.)
236
ktracks/in
Areal density (avg.)
341.5Gb/in
2
Spindle speed
5900 RPM
Internal data transfer rate (max.)
1285Mb/s
Sustained data transfer rate (max.)
120MB/s
I/O data-transfer rate (max.)
300MB/s
ATA data-transfer modes supported
PIO modes 0–4
Multiword DMA modes 0–2
Ultra DMA modes 0–6
Cache buffer
16MB
8MB
Height (max.)
20.20mm / 0.795 in
Width (max.)
101.85mm / 4.010 in
Length (max.)
146.99mm / 5.787 in
Weight (typical)
395g / 0.871 lb
Average latency
5.1ms
Power-on to ready (typical)
<6s
Standby to ready (typical)
<6s
Track-to-track seek time (typical)
<1.0ms (read)
<1.2ms (write)
Average seek (typical)
<14.0ms (read)
<15.0ms (write)
Startup current (typical) 12V (peak)
2.0A
Voltage tolerance (including noise)
5V ± 5%
12V ± 10%
Operating temperature
(drive case temperature)
0° to 75°C
Non-operating temperature (ambient)
–40° to 70°C
Temperature gradient (max.)
20°C per hour (operating)
30°C per hour (non-operating)
Relative humidity
5% to 90% (operating)
5% to 95% (non-operating)
Relative humidity gradient (max.)
30% per hour
Wet bulb temperature (max.)
37.7°C (operating)
40.0°C (non-operating)
Altitude, operating
–60.96m to 3,048m
(–200 ft
to 10,000+ ft)
Altitude, non-operating
(below mean sea level, max.)
–60.96m to 12,192m
(–200 ft
to 40,000+ ft)