Seagate ST9250424AS, ST980414ASG manual Formatted capacity, Default logical geometry, LBA mode

and formatting.

**During periods of drive idle, some offline activity may occur according to the S.M.A.R.T. specification, which may increase acoustic and power to operational levels.

***Typical notebooks will pull power to the drive when entering S3 and S4; while in the S3 and S4 states, drive sleep and drive standby modes will not contribute to battery power consumption.

2.2Formatted capacity

Model	Formatted capacity*	Guaranteed sectors	Bytes per sector
ST9320424AS and ST9320424ASG	320 Gbytes	625,142,448	512
ST9250424AS and ST9250424ASG	250 Gbytes	488,397,168	512
ST9160414AS and ST9160414ASG	160 Gbytes	312,581,808	512
ST9120414AS and ST9120414ASG	120 Gbytes	234,441,648	512
ST980414ASG	80 Gbytes	156,301,488	512

*One Gbyte equals one billion bytes when referring to hard 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 (sectors) are consecutively numbered from 0 to n–1,where n is the number of guaranteed sectors as defined above.

See Section 4.2.5, "Identify Device command" (words 60-61 and 100-103) for additional information about 48- bit addressing support of drives with capacities over 137 Gbytes.

2.3Default logical geometry

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

Momentus 7200 FDE.1 SATA Product Manual, Rev. A 7