Seagate ST910021AS Formatted capacity, Default logical geometry, LBA mode, Drive specifications

Table 1:	Drive specifications
Drive specification		ST910021AS	ST980825AS	ST96023AS	ST94015AS
Supports Hotplug operation per SATA II spec-		Yes
ification

*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
ST910021AS	100 Gbytes	195,371,568	512
ST980825AS	80 Gbytes	156,301,488	512
ST96023AS	60 Gbytes	117,210,240	512
ST94015AS	40 Gbytes	78,140,160	512

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 7200.1 SATA Product Manual, Rev. B 5