Automatic Acoustic Management

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Automatic Acoustic Management (AAM) is a method for reducing acoustic emanations in AT Attachment (ATA) mass storage devices, such as ATA hard disk drives and ATAPI optical disc drives. Since acoustic emanations are a byproduct of rotational speed, AAM provides a discretionary mechanism for quieting drives by limiting rotational speed and power consumption—in effect, sacrificing performance for quieter operation.

AAM operates independently of Advanced Power Management settings. AAM is an optional feature set for ATA/ATAPI devices; when a device supports AAM, the acoustic management parameters are adjustable through a software or firmware user interface.

INCITS (formerly NCITS) first standardized AAM in the ATA/ATAPI-6 specification.

[edit] See also

• Device Configuration Overlay
• International Committee for Information Technology Standards
• Quiet PC
• S.M.A.R.T.

[edit] References

• Information Technology - AT Attachment with Packet Interface - 6 (ATA/ATAPI-6), Revision 1e. 26 June 2001. Accessed on 1 April 2009.

[edit] External links

• HDDScan, an AAM tool for Windows. Accessed on 1 April 2009.
• hdparm, a Linux tool for reading and changing ATA drive parameters. Accessed on 1 April 2009.
  • hdparm for Windows Accessed on 1 April 2009.
• Hitachi Feature Tool for ATA Hard Disk Drives Accessed on 1 April 2009.
• Wegel, Alex. "Set Automatic Acoustic Management level on hard drives." MacOSXHints.com. 14 October, 2004. Accessed on 1 April 2009.