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NL35 Series 7200.2 SATA Product Manual, Rev. C
3
2.0 Drive 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.
2.1 Formatted capacity*
*One Gbyte equals one billion bytes when referring to hard drive capacity. Accessible capacity may vary
depending on operating environment and formatting.
2.1.1 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.
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.
2.2 Default logical geometry
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.
Model Formatted capacity Guaranteed sectors Bytes per sector
ST3500641NS and ST3500841NS 500 Gbytes 976,773,168 512
Cylinders Read/write heads Sectors per track
16,383 16 63