Table 1: | Drive specifications |
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Drive specification | ST9120821AS | ST9100824AS | ST98823AS | ST96812AS | ST94813AS | ST93811AS | |
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Load/Unload (U/UL) cycles |
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25°C, 50% relative humidity | 600,000 |
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32°C, 80% relative humidity | 20,000 hard power on/off cycles |
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5°C, 80% relative humidity | 600,000 |
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5°C, 10% relative humidity | 20,000 hard power on/off cycles |
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55°C, 16% relative humidity |
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Supports Hotplug operation per SATA | Yes (requires COMPRESET from host after a hotplug event) |
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II specification |
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*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 |
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ST9120821AS | 120 Gbytes | 234,441,648 | 512 |
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ST9100824AS | 100 Gbytes | 195,371,568 | 512 |
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ST98823AS | 80 Gbytes | 156,301,488 | 512 |
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ST96812AS | 60 Gbytes | 117,210,240 | 512 |
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ST94813AS | 40 Gbytes | 78,140,160 | 512 |
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ST93811AS | 30 Gbytes | 58,605,120 | 512 |
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2.2.1LBA mode
When addressing these drives in LBA mode, all blocks (sectors) are consecutively numbered from 0 to
See Section 4.3.1, "Identify Device command" (words
2.3Default logical geometry
Cylinders | Read/write heads | Sectors per track |
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16,383 | 16 | 63 |
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LBA mode
When addressing these drives in LBA mode, all blocks (sectors) are consecutively numbered from 0 to
Momentus 5400.2 SATA Product Manual, Rev. C | 5 |