Desktop SSHD Product Manual, Rev. B 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
ST4000DX001 4000GB 7,814,037,168
4K
ST2000DX001 2000GB 3,907,029,168
ST1000DX001 1000GB 1,953,525,168
