Seagate ST3500641NS 2.0Drive specifications, 2.1Formatted capacity, 2.2Default logical geometry

2.0Drive specifications

Unless otherwise noted, all specifications are measured under ambient conditions, at 25°C, and nominal power. For convenience, the phrases the drive and this drive are used throughout this manual to indicate ST3500841NS and ST3500641NS models.

2.1Formatted capacity*

Model	Formatted capacity	Guaranteed sectors	Bytes per sector
ST3500641NS and ST3500841NS	500 Gbytes	976,773,168	512

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

2.1.1LBA 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 4.3.1, "Identify Device command" (words 60-61 and 100-103) for additional information about 48- bit addressing support of drives with capacities over 137 Gbytes.

2.2Default 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.

NL35 Series 7200.2 SATA Product Manual, Rev. C 3