Seagate ST9160823AS, ST980813ASG manual Formatted capacity, Default logical geometry, LBA mode

Table 1:	Drive specifications
		ST9200420ASG	ST9160823AS			ST980813AS
Drive specification		ST9200420AS	ST9160823ASG	ST9120823AS	ST9100821AS	ST980813ASG
Load/Unload (L/UL) cycles
25°C, 50% relative humidity		600,000 software-controlled power on/off cycles
		20,000 hard power on/off cycles
32°C, 80% relative humidity		600,000 software-controlled power on/off cycles
5°C, 80% relative humidity		20,000 hard power on/off cycles
5°C, 20% relative humidity
60°C, 20% relative humidity
Supports Hotplug operation per SATA II		Yes
specification

*One Gbyte equals one billion bytes when referring to hard drive capacity. Accessible capacity may vary depending on operating environment 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
ST9200420AS and ST9200420ASG	200 Gbytes	390,721,968	512
ST9160823AS and ST9160823ASG	160 Gbytes	312,581,808	512
ST9120823AS	120 Gbytes	234,441,648	512
ST9100821AS	100 Gbytes	195,371,568	512
ST980813AS and ST980813ASG	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 4.3.1, "Identify Device command" (words 60-61 and 100-103) for additional information about 48- bit addressing support of drives with capacities over 137 Gbytes.

2.3Default 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 7200.2 SATA Product Manual, Rev. E 5