Seagate ST3500321CS, ST3320310CS manual Formatted capacity, Default logical geometry, LBA mode

2.2Formatted capacity

	Formatted	Guaranteed
Model	capacity*	sectors	Bytes per sector
ST3500321CS	500 Gbytes	976,773,168	512
ST3500422CS
ST3320310CS	320 Gbytes	625,142,448	512
ST3320410CS
ST3160310CS	160 Gbytes	312,581,808	512

*One Gbyte equals one billion bytes when referring to hard drive capacity. Accessible capacity may vary depending on operating environment and formatting.

2.2.1LBA mode

When addressing the drive in LBA mode, all blocks (sectors) are consecutively numbered from 0 to n–1,where n is the number of guaranteed sectors as defined above.

See Section 4.3.1, "Identify Device command" (words 60-61 and 100-103) for additional information about 48- bit addressing support of drives with capacities over 137 Gbytes.

2.3Default logical geometry

Cylinders	Read/write heads	Sectors per track
16,383	16	63

LBA mode

When addressing the drive in LBA mode, all blocks (sectors) are consecutively numbered from 0 to n–1,where n is the number of guaranteed sectors as defined above.

2.4Recording and interface technology

	500 GB models		320 and 160 GB model
Interface	Serial ATA (SATA)
Recording method	Perpendicular
Recording density (kbits/inch max)	1,020 kbits/in max		1,242 kbits/in max
Track density (ktracks/inch avg)	173 ktracks/in avg
Areal density (Gbits/inch2 avg)	176	Gbits/in2 avg	215 Gbits/in2 avg
Internal data transfer rate (Mbits/sec max)	980	Mbits/sec max	1,201 Mbits/sec max
Sustained data transfer rate (Mbytes/sec max)	90
I/O data-transfer rate (Mbytes/sec max)	300

8 Pipeline HD Series SATA Product Manual, Rev. C