Seagate ST3120213ACE, ST3160212ACE manual Formatted capacity, Default logical geometry, LBA mode

2.2Formatted capacity

	Formatted	Guaranteed
Model	capacity*	sectors	Bytes per sector
ST3500841ACE	500 Gbytes	976,773,168	512
ST3400833ACE	400 Gbytes	781,422,768	512
ST3300822ACE	300 Gbytes	586,072,368	512
ST3250824ACE	250 Gbytes	488,397,168	512
ST3200827ACE	200 Gbytes	390,721,968	512
ST3160212ACE	160 Gbytes	312,581,808	512
ST3120213ACE	120 Gbytes	234,441,648	512
ST3802110ACE	80 Gbytes	156,301,488	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 these drives 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 4.1.2, "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 these drives 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

Interface	ATA
Recording method	16/17 EPRML
Recording density KBPI (kbits/inch max)
ST3500841ACE, ST3400833ACE, ST3300822ACE,	790.1
ST3250824ACE, ST3200827ACE
ST3160212ACE, ST3120213ACE, ST3802110ACE	840.0
Track density KTPI (ktracks/inch max)
ST3500841ACE, ST3400833ACE, ST3300822ACE,	124.5
ST3250824ACE, ST3200827ACE
ST3160212ACE, ST3120213ACE, ST3802110ACE	141.5
Areal density (Gbits/inch2 max)

10 DB35 Series 7200.2 Product Manual, Rev. D