IBM DTLA-305040 Hard Drive Specifications - Page 168

Automatic Acoustic Management

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12.28.3.1 Low Power Idle mode Additional electronics are powered off and the heads are unloaded on the ramp. However the spindle is still rotated at the full speed. 12.28.3.2 Low RPM standby mode The heads are unloaded on the ramp and the spindle is rotated at the 60-65% of the full speed. When Feature register is 85h (=Disable Advanced Power Management), the deepest Power Saving becomes normal Idle. 12.28.4 Automatic Acoustic Management When Feature register is 42h (=Enable Automatic Acoustic Management), the Sector Count Register specifies the Automatic Acoustic Management level. FF C0 - FEh 80 - BFh 00 - 7Fh --- Aborted --- Set to Normal Seek mode --- Set to Quiet Seek mode --- Aborted The device preserves enabling or disabling of Automatic Acoustic Management and the current Automatic Acoustic Management level setting across all forms of reset, that is, Power on, Hardware, and Software Resets. Deskstar 40GV & 75GXP hard disk drive specifications 156

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12.28.3.1
Low Power Idle mode
Additional electronics are powered off and the heads are unloaded on the ramp.
However the spindle is
still rotated at the full speed.
12.28.3.2
Low RPM standby mode
The heads are unloaded on the ramp and the spindle is rotated at the 60-65% of the full speed.
When Feature register is 85h (=Disable Advanced Power Management), the deepest Power Saving
becomes normal Idle.
12.28.4 Automatic Acoustic Management
When Feature register is 42h (=Enable Automatic Acoustic Management), the Sector Count Register
specifies the Automatic Acoustic Management level.
FF
--- Aborted
C0 - FEh
--- Set to Normal Seek mode
80 - BFh
--- Set to Quiet Seek mode
00 - 7Fh
--- Aborted
The device preserves enabling or disabling of Automatic Acoustic Management and the current
Automatic Acoustic Management level setting across all forms of reset, that is, Power on, Hardware, and
Software Resets.
Deskstar 40GV & 75GXP hard disk drive specifications
156