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Momentus 5400.2 SATA Blade Server Product Manual, Rev. B
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*One Gbyte equals one billion bytes when referring to hard drive capacity. Accessible capacity may vary depending on operating environment
and formatting.
**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.
***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.
2.2 Formatted capacity
*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 4.3.1, "Identify Device command" (words 60-61 and 100-103) for additional information about 48-
bit addressing support of drives with capacities over 137 Gbytes.
2.3 Default logical geometry
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.
Model Formatted capacity* Guaranteed sectors Bytes per sector
ST9120821SB 120 Gbytes 234,441,648 512
ST9100824SB 100 Gbytes 195,371,568 512
ST98823SB 80 Gbytes 156,301,488 512
ST96812SB 60 Gbytes 117,210,240 512
ST94813SB 40 Gbytes 78,140,160 512
Cylinders Read/write heads Sectors per track
16,383 16 63