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Old 03-02-2014, 05:28 AM
Northwoods Northwoods is offline
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Join Date: Feb 2014
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Originally Posted by deees View Post
My guess is that is for System Builder, (who'll be shipping whole systems), to allow them to lock the populated sleds into the cages for security.
That.. actually makes a whole lot of sense. I hadn't considered that, thank you!

Originally Posted by deees View Post
The one thing that I can think of that might be significant is that I have the two cages attached under the optical bays because I have fans in the lower section. Perhaps this makes a difference?
I actually do have the cage mounted in the front, under the optical bay. Just the single cage, really, as I've only got the two drives. (Just like in the picture posted.)

Originally Posted by deees View Post
Have you tried putting something behind the cages where they attach to the back of the case? I'm not using anything, but perhaps it could help you if that's where the vibrations are generating noise.
As far as I've been able to ascertain the back end of the drive cage is not the cause of the noise.

Originally Posted by deees View Post
Can you post a link to some of the threads of people who are also experiencing that problem, I'm curious what the common denominator might be?
While the following links are not from the Corsair forums, nor are they related to the 900D, they are users asking questions about the beat frequency phenomenon using two drives. (I haven't been able to find much at all about hard drive vibrations with the 900D. I'm beginning to think I just have an unlucky combination of parts!)

It appears to be a bit hit and miss both in terms of actually experiencing the problem, and being able to resolve it. I can't help but wonder if the number of drive you're (deees) running cancels it all out.

I have managed to change the type of noise produced. By using a non-hotswap cage and removing any rubber padding I had placed in between the sleds and the drives themselves, I'm left with a more "buzzing" vibration sound, rather than a loud "hum". It's not quite as irritating, but I'm going to keep trying to get this quiet.

Something that I admit I find a bit fascinating, is something I discovered yesterday evening. Namely, that the vibration of the drive cage oscillates back and forth between the front of the cage (where the locking doors are), and the back (where it attaches to the motherboard tray and front panel thing). Any vibrational noise is audible only when the front of the cage is vibrating. This is also when the vibrations throughout the entire case (and my floor) are most intense. (I initially thought this meant that the locking doors where loose and vibrating, but even removing them from the sled completely did not help noise any.) The oscillation has a period of about 4-5 seconds.

I may just turn to using bungee cords to suspend the drives in mid-air, if nothing else works. Though I am slightly worried about that, as I've heard that doing so shortens the lifespan of the drive considerably since the drive then experiences the full force of its vibrations, rather than being held in place by a proper drive mount. I haven't been able to find any definite proof of that, just a single forum post where someone said they saw tests done regarding it.
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