Seagate ST3200827ACE manual Drive specifications for 500 and 400 Gbyte models, ST3500841ACE

Table 1:	Drive specifications for 500 and 400 Gbyte models
Drive specification		ST3500841ACE	ST3400833ACE
Formatted Gbytes (512 bytes/sector)*		500	400
Guaranteed sectors		976,773,168	781,422,768
Bytes per sector		512
Default sectors per track		63
Default read/write heads		16
Default cylinders		16,383
Recording density, KBPI (kbits/in max)		790.1
Track density, KTPI (ktracks/in max)		124.5
Areal density, (Gbits/in2 max)		97.96
Spindle speed (RPM)		7,200
Internal data transfer rate (Mbits/sec max)		815.2
Sustained data transfer rate (Mbytes/sec max)		65.0
I/O data-transfer rate (Mbytes/sec max)		100
ATA data-transfer modes supported		PIO modes 0–4
		Multiword DMA modes 0–2
		Ultra DMA modes 0–5
Cache buffer		8 Mbytes
Height (mm max)		26.1 mm (1.028 inches)
Width (mm max)		101.6 mm (4.000 inches) +/- 0.010 inches
Length (mm max)		146.99 mm (5.787 inches)
Weight (typical)		710 grams (1.57 lb.)
Average latency (msec)		4.16
Power-on to ready (sec max)		16 sec
Standby to ready (sec max)		16 sec
Track-to-track seek time (msec typical)		<0.8 (read), <1.0 (write)
Average seek (msec typical)		18 (read), 20 (write)
Startup current (typical) 12V (peak)		2.0 amps
Seek power (typical)		12.60 watts
Operating (Consumer Storage Profile)		9.20 watts
Operating (PVR Storage Profile		4.88 watts
Idle mode (typical)		8.00 watts
Standby mode (typical)		0.80 watts
Sleep mode (typical)		0.80 watts
Voltage tolerance (including noise)		5V ± 5%
		12V ± 10%
Ambient temperature		0° to 60°C (operating)
		–40° to 70°C (nonoperating)
Temperature gradient (°C per hour max)		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 (°C max)		37.7 (operating)
		40.0 (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.)

4 DB35 Series 7200.2 Product Manual, Rev. D