Seagate ST31000520AS Barracuda LP Series SATA Product Manual - Page 14

Table 2, for 1000GB models - ata

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Table 2: Drive specifications summary for 1000GB 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 OD (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 Average read (typical) Average write (typical) 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 (max) Wet bulb temperature (max) Altitude, operating Altitude, nonoperating (below mean sea level, max) Operational Shock (max) ST31000520AS 1000GB 1,953,525,168 4 2 512 63 16 16,383 1417kbits/in 236 ktracks/in avg 341.5Gb/in2 avg 5900 RPM 1285Mb/s 95MB/s 300MB/s PIO modes: 0 to 4 Multiword DMA modes: 0 to 2 Ultra DMA modes: 0 to 6 32MB 26.1mm / 1.028 in 101.85mm / 4.010 in 146.99mm / 5.787 in 622g / 1.371 lb 5.1ms

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6
Barracuda LP Series SATA Product Manual, Rev. D
Table 2:
Drive specifications summary
for 1000GB models
Drive specification
ST31000520AS
Formatted capacity
(512 bytes/sector)*
1000GB
Guaranteed sectors
1,953,525,168
Heads
4
Disks
2
Bytes per sector
512
Default sectors per track
63
Default read/write heads
16
Default cylinders
16,383
Recording density (max)
1417kbits/in
Track density (avg)
236 ktracks/in avg
Areal density (avg)
341.5Gb/in
2
avg
Spindle speed
5900 RPM
Internal data transfer rate (max)
1285Mb/s
Sustained data transfer rate OD (max)
95MB/s
I/O data-transfer rate (max)
300MB/s
ATA data-transfer modes supported
PIO modes: 0 to 4
Multiword DMA modes: 0 to 2
Ultra DMA modes: 0 to 6
Cache buffer
32MB
Height (max)
26.1mm / 1.028 in
Width (max)
101.85mm / 4.010 in
Length (max)
146.99mm / 5.787 in
Weight (typical)
622g / 1.371 lb
Average latency
5.1ms
Power-on to ready (typical)
<12s
Standby to ready (typical)
<6s
Track-to-track seek time
<1.0ms (read)
<1.2ms
(write)
Average read (typical)
Average write (typical)
<16.0ms
<16.0ms
Startup current (typical) 12V (peak)
2.0A
Voltage tolerance (including noise)
5V ± 5%
12V ± 10%
Operating temperature
(Drive Case temperature)
0° to 60°C
Nonoperating temperature (Ambient)
–40° to 70°C
Temperature gradient (max)
20°C per hour (operating)
30°C per hour (nonoperating)
Relative humidity
5% to 90% (operating)
5% to 95% (nonoperating)
Relative humidity gradient (max)
30% per hour
Wet bulb temperature (max)
37.7°C max (operating)
40.0°C max (nonoperating)
Altitude, operating
–60.96m to 3,048m
(–200 ft to 10,000+ ft)
Altitude, nonoperating
(below mean sea level, max)
–60.96m to 12,192m
(–200 ft. to 40,000+ ft.)
Operational Shock (max)
70 Gs at 2ms