Filter
Top Products
14 Barracuda ES Serial ATA Product Manual, Rev. D
2.2 Formatted capacity
*One Gbyte equals one billion bytes when referring to hard drive capacity. Accessible capacity may vary depending on operating environment
and formatting.
2.2.1 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.
2.3 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
ST3750640NS 750 Gbytes 1,465,149,168 512
ST3750840NS 750 Gbytes 1,465,149,168 512
ST3500630NS 500 Gbytes 976,773,168 512
ST3500830NS 500 Gbytes 976,773,168 512
ST3400620NS 400 Gbytes 781,422,768 512
ST3400820NS 400 Gbytes 781,422,768 512
ST3320620NS 320 Gbytes 625,142,448 512
ST3320820NS 320 Gbytes 625,142,448 512
ST3250620NS 250 Gbytes 488,397,168 512
ST3250820NS 250 Gbytes 488,397,168 512
Cylinders Read/write heads Sectors per track
16,383 16 63