Seagate ST9500420ASG Momentus 7200 FDE.1 SATA Product Manual - Page 13
Formatted capacity, Default logical geometry
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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. 2.2 Formatted capacity Model ST9320424AS and ST9320424ASG ST9250424AS and ST9250424ASG ST9160414AS and ST9160414ASG ST9120414AS and ST9120414ASG ST980414ASG Formatted capacity* 320 Gbytes 250 Gbytes 160 Gbytes 120 Gbytes 80 Gbytes Guaranteed sectors 625,142,448 488,397,168 312,581,808 234,441,648 156,301,488 Bytes per sector 512 512 512 512 512 *One Gbyte equals one billion bytes when referring to hard drive capacity. Accessible capacity may vary depending on operating environment and formatting. 2.2.1 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 4.2.5, "Identify Device command" (words 60-61 and 100-103) for additional information about 48bit addressing support of drives with capacities over 137 Gbytes. 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. Momentus 7200 FDE.1 SATA Product Manual, Rev. B 7