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2 formatted capacity, 1 lba mode, 3 default logical geometry – Seagate BARRACUDA ES SERIAL ATA ST3750640NS User Manual

Page 20: Formatted capacity 2.2.1, Lba mode, Default logical geometry

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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

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