Seagate ST120HM000 Formatted Capacity, LBA mode, Default Logical Geometry for ATA Based Systems

Drive specification	ST480HM000	ST480HM001	ST240HM000	ST240HM001	ST120HM000	ST120HM001
Vibration, random nonoperating			20–2000 Hz:	11.08 Grms
Nonrecoverable read errors, max			1 LBA per 1016 bits read
Annualized Failure Rate (AFR)	0.58%
Warranty		3-Year Limited Warranty With Media Usage
Lifetime Power cycles	25,000
Supports Hotplug operation per			Yes
Serial ATA Revision 3.0 specification

*One GB equals one billion bytes when referring to drive capacity. Accessible capacity may vary depending on operating environment and formatting.

**Warranty terms are “Limited Warranty With Media Usage”, see Warranty information in Section 2.10.2 or consult your Seagate sales representative for warranty terms and conditions.

2.2FORMATTED CAPACITY

Formatted capacity*	Guaranteed LBAs	Emulated LBA Size (Bytes)
480GB	937,703,088
240GB	468,862,128	512
120GB	234,441,648

*One GB equals one billion bytes when referring to drive capacity. Accessible capacity may vary depending on operating environment and formatting.

2.2.1LBA mode

When addressing these drives in LBA mode, all blocks (LBAs) are consecutively numbered from 0 to n–1,where n is the number of guaranteed LBAs 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.

2.3DEFAULT LOGICAL GEOMETRY FOR ATA BASED SYSTEMS

Cylinders	Read/write heads	Sectors per track
16,383	16	63

SEAGATE 600 SSD PRODUCT MANUAL, REV. B 4