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Yeah it is a 4220. I have some pictures earlier in this thread with a picture of the fanplate I believe. I used the top from the stock plate and cut a piece of aluminum from an old case I had to make the current plate. They are pretty slim fans so it is very quiet. I only have 6 drives in right now and they are all 5,400 RPM green drives so the temps stay pretty low. I've seen 35 to 36 degrees highest temps during parity checks. It sits beside me in the same room and isn't noticeable at all. Just a very low hum from the 9 fans. Others expressed concern once the case was fully populated about a lack of static pressure on the intake but you can feel the airflow being pulled in on the front. If it ends up getting too warm once I've got 20 drives in it, I can always switch to slightly louder 80mm fans. During normal operation the drives stay around 32 to 33 degrees.

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Finally got some proper CPU cooling for the unraid box and expanded to 6 drives. This CPU cooler shouldn't interfere with the airflow of the case as much as the stock cooler did. I picked up a couple SuperMicro AOC-SASLP-MV8 controller cards and a nice little Lexar flash drive. I like how it is almost flush with the front. On with the pictures!

 

 

 

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I chose the 80mm fans just to be different. I thought they also filled the available space well. The particular fans in question are Cooler Master R4-SPS-20AK-GP. You can see the full specs on NewEgg but they are basically 24CFM with 20dBA at 2,000 RPM. I was leaning more in favor of quiet versus efficient. I totally agree about the CPU cooler and I've been looking at different LGA 775 coolers. I was pondering possibly using a fanless one but I don't know how much heat that little Celeron 430 is going to put out. The drives in question are WDEARS 2TB Green drives. They're only running at 5,400 RPM so I don't think they'll overheat the case, even when I get 20 of them in there. I've currently got 2 drives and I'm going to move the 3rd out of my workstation once I get the data moved to my array.

 

Here are the fans in question:

http://www.newegg.com/Product/Product.aspx?Item=N82E16835103081

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I just got the first two drives in and started a parity-sync. The sync is up to 30% now and I haven't seen the drives go about 29C yet. The fans are very quiet and didn't interfere with me watching a BD in the same room. These Cooler Master fans are roughly half the thickness of a normal 80mm and probably about one third the thickness of the stock ones. I just gotta save up for more drives and some controller cards now.  Here's what it looks like at the moment:

 

 

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Thanks. Yeah I plan on using just the 9 on the fan wall. I removed the back two as I don't think they'll be doing much except getting in the way. I've only got some temporary fans rigged up at the moment, just mixed brands and colors, but I've got some Cooler Master ones on order from Newegg. I think they were $6 or $7 each. Around 20dB and 24CFM if I remember correctly. It will be a little less CFM total than the stock ones but it should be much more quiet. I'll post pictures and results once I get it rocking out.

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Greetings all, I've been lurking around the board for a month or two now after reading an article on bit-tech.net praising unRaid. I finally decided to get my feet wet and figured I should start with a (relatively) cheap build. I wanted the ability to eventually expand all the way to the 20 drive limit so I knew I needed a 12 5.25" bay setup or a server chassis. I was seriously planning to go with the Antec 1200 as I could upgrade along the way. In the end, it seemed cheaper to just buy the server chassis than the Antec and 5-in-3 drive docks.

 

I had read the fans in the 4220 were loud but they didn't seem horrible. My wife seemed to disagree though so I took the chassis over to my dad's house where he has plenty of tools to modify the fan wall. I've read of some 3x 120mm and 3x 140mm builds, but I wanted to try something different. This machine will be living in a closet near my office and the guest bedroom so I wasn't allowed to have anything too incredibly loud. Here's the results.