Momentus 7200.2 SATA Product Manual, Rev. E
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*One Gbyte equals one billion bytes when referring to hard drive capa city. Accessible capacity may vary depending on operating environment
and formatting.
**During periods of drive idle, some offline activity may oc cu r acc or ding to th e S. M.A .R.T. spe cification, 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 state s, drive sleep and drive standby
modes will not contribute to battery power consum ption.
2.2 Formatted capacity
*One Gbyte equals one billion bytes when referring to hard drive capa city. 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 geo m etry
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.
Load/Unload (L/UL) cycles
25°C, 50% relative humidity
32°C, 80% relative humidity
5°C, 80% relative humidity
5°C, 20% relative humidity
60°C, 20% relative humidity
600,000 software-controlled power on/off cycles
20,000 hard power on/off cycles
600,000 software-controlled power on/off cycles
20,000 hard power on/off cycles
Supports Hotplug operation per SATA II
specification Yes
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
Cylinders Read/write heads Sectors per track
16,383 16 63
Table 1: Drive specifications
Drive specification ST9200420ASG
ST9200420AS ST9160823AS
ST9160823ASG ST9120823AS ST9100821AS ST980813AS
ST980813ASG