Actually, I just spent a little while today remounting most of my fans on double-sided mounting tape (the stuff that's fairly thick made of a type of foamy stuff) rather than screwing them to the case. It seems all of my fans (even this Sunon one, but very little) make vibrations which my cheap case happily amplifies.
Of course, you can probably tell whether vibration is the problem by listening for specific tones rather than just plain white noise, but maybe with a whole ton of fans in one box it would be harder to tell.
Anyway, after mounting the fans with double sided tape, noise was much reduced.
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2.4.0test8pre4 just ate my linux-kernel mailbox. *sniffle*
Uh. Read. It's both user space and kernel space, with the user space version being used for the specweb test.
Actually, I just spent a little while today remounting most of my fans on double-sided mounting tape (the stuff that's fairly thick made of a type of foamy stuff) rather than screwing them to the case. It seems all of my fans (even this Sunon one, but very little) make vibrations which my cheap case happily amplifies.
Of course, you can probably tell whether vibration is the problem by listening for specific tones rather than just plain white noise, but maybe with a whole ton of fans in one box it would be harder to tell.
Anyway, after mounting the fans with double sided tape, noise was much reduced.
Simon-