Acoustic Management

.Griff. · 5 Oct 2006 at 16:11

Is apparently enabled on my 150gb Raptor. Is this on by default and does it affect performance in any way?

wizardmaxx · 5 Oct 2006 at 16:15

"Accoustic management slows down the head seek speed so random access speeds will be impacted. You can see it pretty dramtically using the FTOOL - set the 'test' option on, slide the bar to the minimum and watch the drive slow down. Sequential reads won't be impacted as much.

Again, though - aucostic management won't do anything to reduce the "whine" that people are complaining about - only the "chatter" during seeks. The whine is a function of the speed the drive spins. If you don't like that sound, you'll need to go to a slower drive or wait until someone other than Hitachi comes out with a 7200rpm alternative."

.Griff. · 5 Oct 2006 at 16:26

How do I turn this off? Is it a Bios option or do I need a WD tool?

Listy · 5 Oct 2006 at 19:04

You can turn it on/off in Windows using WinAAM 2.3: http://www.withopf.com/tools/aam/winaam-23.zip

wizardmaxx · 6 Oct 2006 at 04:13

Hi listy

Says to me " no ata hard disk found" Have u tried this on a raptor before ?

Listy · 6 Oct 2006 at 13:22

No I thought it worked on everything apart from Seagate SATA drives (they don't support AAM). Other than that I can't be much more help I'm afraid.

.Griff. · 6 Oct 2006 at 13:27

It "appeared" to work on my Raptor but said it was already in "loud" mode so I didn't apply any changes.

wizardmaxx · 6 Oct 2006 at 13:30

"Although several levels of AAM (Automatic Acoustic Management) could be enabled using Hitachi's Feature Tool, the changes never produced any audible difference in seek noise, nor did the power consumption change. For practical purposes, the Raptor does not support AAM."