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 Post subject: Quiet 80mm fans for hard drive cages.
PostPosted: Fri Dec 16, 2011 10:06 pm 
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Joined: Sun Nov 06, 2011 8:00 pm
Posts: 13
I'm looking for two quite 80mm fans to cool the five hard dives in my NAS. Three drives will be in a Icydock 3-in-2 external cage (link: http://www.icydock.com/goods.php?id=119) with the other two drives in a regular internal bay. Both fans will run off the Icydock's 3-pin header, which can handle the .2 amps or so I expect the fans to draw (Icydock's very helpful support assured me of this).

My questions are:
How much airflow is really need over the lightly used drives of a home server?
Would high static pressure be useful in this situation? The drives, particularly in the external cage, are pretty squeezed together.

and:
Are there any particular fans recommended for this application?


Last edited by herby on Sun Dec 18, 2011 2:11 am, edited 1 time in total.

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 Post subject: Re: Qui[et] 80mm fans for hard drive cages.
PostPosted: Sat Dec 17, 2011 2:20 pm 
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Joined: Wed Mar 30, 2011 1:46 am
Posts: 89
Location: Australia
herby wrote:
I'm looking for two quite 80mm fans to cool the five hard dives in my NAS. Three drives will be in a Icydock 2-to-3 external cage (link: http://www.icydock.com/goods.php?id=119) with the other two drives in a regular internal bay. Both fans will run off the Icydock's 3-pin header, which can handle the .2 amps or so I expect the fans to draw (Icydock's very helpful support assured me of this).

My questions are:
How much airflow is really need over the lightly used drives of a home server?
Would high static pressure be useful in this situation? The drives, particularly in the external cage, are pretty squeezed together.

and:
Are there any particular fans recommended for this application?


We use Noctua 80mm fans in our 3-in-2 cages and they provide adequate airflow to keep the drives in an ideal range for most of the year - the exception being midsummer, where ambient in our rooms rises to close to 40 degrees and there's not really much to do there... Can't hear them, either, which is a big plus for us. That's for six WD20EARX drives.

In the same server we've got ten 7200RPM enterprise drives and it takes a pair of 140mm fans on either side of each HDD cage to keep them at the same temperature. Hard drive choice makes a giant difference as to how much fan oomph you need.


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 Post subject: Re: Quiet 80mm fans for hard drive cages.
PostPosted: Sun Dec 18, 2011 2:19 am 
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Joined: Sun Nov 06, 2011 8:00 pm
Posts: 13
Jim, the Icydock has a large PBC backplane that might obstruct airflow. In your experience do you find it is better to blow into or suck air out of a cage?


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 Post subject: Re: Quiet 80mm fans for hard drive cages.
PostPosted: Mon Dec 19, 2011 1:52 am 
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Joined: Wed Feb 16, 2011 11:52 am
Posts: 83
Hi,

A few questions :

- Does the Icy dock regulate the fan ? Or can you use something like the Noctua LNA/LNA resistor, or a Zalman fanmate to slow down the fan ?

- Also, what drives are you using ? Are you using them right now, with or without fan ? If yes, what are their temp ?

- In what shop(s) (online shop ?) are you planning to buy your fan ? I live in Europe, so I can find easily some fans, but maybe you can't.

I think one of these may be silent enough out of the box (12V) :

BeQuiet shadow wings low speed : http://www.be-quiet.net/be-quiet.net/in ... iteLang=en
Nanoxia DX08-1200
Scythe S-flex 1000rpm
Nexus real silent

But will they perform strong enough ? As fot the Noctua NF-R8, sure it will last long, and it is nicely packed with LNA/ULNA resistor, but is is noisier than the fans above at low speed.


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 Post subject: Re: Quiet 80mm fans for hard drive cages.
PostPosted: Mon Dec 19, 2011 6:35 pm 
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Joined: Sun Nov 06, 2011 8:00 pm
Posts: 13
Lithium, thank you for your advice.

As to your questions:
Lithium466 wrote:
- Does the Icy dock regulate the fan ? Or can you use something like the Noctua LNA/LNA resistor, or a Zalman fanmate to slow down the fan ?
Yes the Icydock does, but I'm not sure how. I emailed Icydock about running .2 amps off the fan header and they sent back this:
Image
I thought the voltage would change more to adjust the speed.
Lithium466 wrote:
- Also, what drives are you using ? Are you using them right now, with or without fan ? If yes, what are their temp ?
At the moment a mix of old drives in a regular 3.5" bay, cooled by a pair of old Panaflo Ls. They run fairly cool. I would like to upgrade over time to modern 5900rpm drives.
Lithium466 wrote:
- In what shop(s) (online shop ?) are you planning to buy your fan ? I live in Europe, so I can find easily some fans, but maybe you can't.
Living in the states, I would likely order from http://www.svc.com or http://www.frozencpu.com/. I prefer http://www.newegg.com/ but they have a poor selection of fans.


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 Post subject: Re: Quiet 80mm fans for hard drive cages.
PostPosted: Tue Dec 20, 2011 8:15 am 
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Joined: Wed Feb 16, 2011 11:52 am
Posts: 83
Hi,

You may look at these fans :

http://www.svc.com/sp802512l-03.html
http://www.svc.com/nb-x1r.html
http://www.svc.com/nb-m8-s1.html
http://www.frozencpu.com/products/9615/ ... =g36c15s58
http://www.frozencpu.com/products/9616/ ... =g36c15s58

Maybe the Noctua NF-R8 could be a possible solution too, even if I don't like it very much, because of its bundled LNA/ULNA resistor, or you may try thermistor-controller fans (?) :

http://www.svc.com/fn-tx08-20.html
http://www.frozencpu.com/products/14506 ... =g36c15s58

Edit : will the fans run vertically mounted ?


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 Post subject: Re: Quiet 80mm fans for hard drive cages.
PostPosted: Wed Dec 21, 2011 12:28 am 
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Joined: Sun Nov 06, 2011 8:00 pm
Posts: 13
Yep, both fans will be mounted vertically.

I'm leaning towards the Nexus:
http://www.svc.com/sp802512l-03.html
I think with the Icydock controlling the speed two should be pretty quiet.

Thanks for the suggestions,
Hopefully the loudest fan in my case will be the Gelid Slim Silent heatsink.


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 Post subject: Re: Quiet 80mm fans for hard drive cages.
PostPosted: Wed Dec 21, 2011 1:36 am 
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Joined: Wed Feb 16, 2011 11:52 am
Posts: 83
Nexus is a good choice. I'm not sure how the Icy dock will regulate the fan speed (the data given by Icy dock are :?: ). Otherwise you can go with Noiseblocker http://www.svc.com/nb-x1r.html


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 Post subject: Re: Quiet 80mm fans for hard drive cages.
PostPosted: Wed Dec 21, 2011 10:13 am 
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Joined: Thu Feb 04, 2010 6:06 pm
Posts: 3395
Location: US
herby wrote:
Living in the states, I would likely order from http://www.svc.com or http://www.frozencpu.com/. I prefer http://www.newegg.com/ but they have a poor selection of fans.

Either of these should be good:

Noctua NF-R8-1800 80mm Case Fan
http://www.newegg.com/Product/Product.a ... 6835608006

Nexus 800mm
http://www.newegg.com/Product/ProductLi ... name=Nexus

Noiseblocker is a good brand.
Sycthe has a wide range of 80mm, some with very low speeds.

Noctua is sort of nice because you can use its included cables to set it to any of 3 speeds.

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 Post subject: Re: Quiet 80mm fans for hard drive cages.
PostPosted: Wed Dec 21, 2011 4:05 pm 
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Joined: Sun Nov 06, 2011 8:00 pm
Posts: 13
ces wrote:
Either of these should be good:

Noctua NF-R8-1800 80mm Case Fan
http://www.newegg.com/Product/Product.a ... 6835608006

Nexus 800mm
http://www.newegg.com/Product/ProductLi ... name=Nexus
I've noticed some people are super stanch defenders of one or the other. Some people say the Nexus is a cheap rebranded fan, others say the the Noctua is overpriced and under-powered, and both accuse the other of being noisy.

I'm going to give the Nexus a shot first. It moves a bit more air so I figure I can undervolt it if it's loud, and it would be a cheaper mistake if I'm wrong.

ces wrote:
Sycthe has a wide range of 80mm, some with very low speeds.
I was looking at Sycthe too, the Gentle Typhoons are on my Christmas list for my gaming rig, and I have the habit of getting sucked into rabid brand loyalty.


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