Seagate ST3400632NS, ST3250823NS, ST3250623NS, ST3400832NS Sustained transfer rate OD Mbytes/sec

Table 1:	Drive specifications
Drive specification		ST3400832NS	ST3400632NS	ST3250823NS	ST3250623NS
Formatted Gbytes (512 bytes/sector)		400		250
Guaranteed sectors		781,422,768		488,397,168
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/inch2 avg)		91,560
Spindle speed (RPM)		7,200
Internal data transfer rate (Mbytes/sec		95
max)
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	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		7.71
Standby mode (typical) watts		1.2
Sleep mode		1.2
Voltage tolerance		5V ± 5%
(including noise)		12V ± 10%
Ambient temperature		0° to 60°C (op.)
		–40° to 70°C (nonop.)

4 NL35 Series SATA Product Manual, Rev. B