NAS HDD Product Manual, Rev. A 13
www.seagate.com Drive Specifications
2.2 Formatted capacity
*One GB equals one billion bytes and 1TB equals one trillion 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 137GB.
2.3 Default logical geometry
•Cylinders: 16,383
•Read/write heads: 16
•Sectors per track: 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.
Model Formatted
capacity*
Guaranteed
sectors Bytes per sector
ST4000VN000 4000GB 7,814,037,168
4K
ST3000VN000 3000GB 5,860,533,168
ST2000VN000 2000GB 3,907,029, 168