Seagate ST3250823AS Product Manual - Page 14

Table 2, Drive specifications for 300 Gbyte models - barracuda 7200 8

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Table 2: Drive specifications for 300 Gbyte models Drive specification Formatted Gbytes (512 bytes/sector)* Guaranteed sectors Bytes per sector Default sectors per track Default read/write heads Default cylinders Recording density in BPI (bits/inch max) Track density TPI (tracks/inch avg) Areal density (Mbits/inch2 avg) Spindle speed (RPM) Internal data transfer rate (Mbytes/sec max) Sustained transfer rate OD (Mbytes/sec) I/O data transfer rate (Mbytes/sec max) ATA data-transfer modes supported SATA data-transfer modes supported Cache buffer Height (max) Width (max) Length (max) Weight (max) grams / lb. Average latency (msec) Power-on to ready (typical) Standby to ready (typical) Track-to-track seek time (msec typical) Average seek, read (msec typical) Average seek, write (msec typical) Startup current (typical) 12V (peak) Seek power (typical) watts Operating power (typical) watts Idle mode (typical) watts Standby mode (typical) watts Sleep mode Voltage tolerance (including noise) Ambient temperature ST3300831AS 300 586,072,368 512 63 16 16,383 763,000 120,000 91,560 7,200 95 65 150 PIO modes 0-4 Multiword DMA modes 0-2 Ultra DMA modes 0-6 1.5 Gbits/sec 8 Mbytes 26.11 mm (1.028 inches) 101.85 mm (4.010 inches) 146.99 mm (5.787 inches) 635 / 1.39 4.16 10 sec 10 sec 0.8 (read), 1.0 (write) 8.0 9.0 2.8 amps 9.9 9.2 7.2 1.2 1.2 5V ± 5% 12V ± 10% 0° to 60°C (op.) -40° to 70°C (nonop.) ST3300631AS 16 Mbytes 6 Barracuda 7200.8 Serial ATA Product Manual, Rev. D

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6
Barracuda 7200.8 Serial ATA Product Manual, Rev. D
Table 2:
Drive specifications for 300 Gbyte models
Drive specification
ST3300831AS
ST3300631AS
Formatted Gbytes (512 bytes/sector)*
300
Guaranteed sectors
586,072,368
Bytes per sector
512
Default sectors per track
63
Default read/write heads
16
Default cylinders
16,383
Recording density in BPI (bits/inch max)
763,000
Track density TPI (tracks/inch avg)
120,000
Areal density (Mbits/inch
2
avg)
91,560
Spindle speed (RPM)
7,200
Internal data transfer rate (Mbytes/sec max)
95
Sustained transfer rate OD (Mbytes/sec)
65
I/O data transfer rate (Mbytes/sec max)
150
ATA data-transfer modes supported
PIO modes 0–4
Multiword DMA modes 0–2
Ultra DMA modes 0–6
SATA data-transfer modes supported
1.5 Gbits/sec
Cache buffer
8 Mbytes
16 Mbytes
Height (max)
26.11 mm (1.028 inches)
Width (max)
101.85 mm (4.010 inches)
Length (max)
146.99 mm (5.787 inches)
Weight (max) grams / lb.
635 / 1.39
Average latency (msec)
4.16
Power-on to ready (typical)
10 sec
Standby to ready (typical)
10 sec
Track-to-track seek time (msec typical)
0.8 (read), 1.0 (write)
Average seek, read (msec typical)
8.0
Average seek, write (msec typical)
9.0
Startup current (typical) 12V (peak)
2.8 amps
Seek power (typical) watts
9.9
Operating power (typical) watts
9.2
Idle mode (typical) watts
7.2
Standby mode (typical) watts
1.2
Sleep mode
1.2
Voltage tolerance
(including noise)
5V ± 5%
12V ± 10%
Ambient temperature
0° to 60°C (op.)
–40° to 70°C (nonop.)