Seagate ST3250310CS manual Formatted capacity, Default logical geometry, LBA mode

2.2Formatted capacity

	Formatted	Guaranteed
Model	capacity*	sectors	Bytes per sector
ST3250310CS	250 Gbytes	488,397,168	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

Interface	Serial ATA (SATA)
Recording method	Perpendicular
Recording density (kbits/inch max)	1,049
Track density (ktracks/inch avg)	155
Areal density (Gbits/inch2 avg)	163
Internal data transfer rate (Mbits/sec max)	1,212
Sustained data transfer rate (Mbytes/sec max)	106
I/O data-transfer rate (Mbytes/sec max)	300

6 DB35.4 Series SATA Product Manual, Rev. B