switchman

Is that with all the drives spun up. How many drives. What is ambient temperature.

The Noctua NF-R8 80mm Fan at 1800 rpm, it is moving 31.19 CFM at a very low noise level which is good. I would not hesitate to go with it.

I purchased the SWiF2-800 Fan, http://www.coolink-europe.com/downloads/pdf/coolink_swif_2_80_en.pdf for my cages when I originally set it up. I should have purchased the 801s as they move more airflow. During the summer months now that I have loaded up the case, the drives can get to over 50C. I recently purchased three of the Vantec TF8025. The amount of air they move at their base speed is approximately the same as the 801 fans above. I noticed Coolink plays games with their specs. Every one else measures the fan velocity in CFM. They rate the 801 fans as 39.7 (m³/h). That works out to be 23.37 CFM. Most people see the high number and think it is better. The Vantecs are rated at 23.8-41.6 CFM. I wanted a variable speed fan that was not dependent on an external controller. These have a sensor that hangs in the airstream an should speed the fans up as the drives heat up. At least that is my hope. At idle, they do not appear to be any nosier that the Coolinks from my ears perspective. Their specs show them louder, but I could not tell they were running over my case and power supply fan. I even purchased a copy of SPLnFFT Noise Meter, https://itunes.apple.com/us/app/splnfft-noise-meter/id355396114?mt=8 for my phone. Ambient noise was mid 40s dba. When I powered up the fans outside the server, I didn't see any change in the noise floor. I will do a before and after check when I do change out the fans. I have not installed them yet. I still have to modify the power cable to work with the Norco 5in3 cages. You need to cut the molex connector off and replace it with a 3 pin connector. I purchased some fan extension cables, basically these http://www.newegg.com/Product/Product.aspx?Item=N82E16812119146, that I will use. It has also been cold, so there was no rush to tear my server apart. http://www.newegg.com/Product/Product.aspx?Item=N82E16811999616 Vantec Thermoflow 80mm Double Ball Bearing Temperature Controlled Case Fan - Model TF8025L RPM 1950-3400 RPM Air Flow 23.8-41.6 CFM Noise Level 25.5-37.5 dBA Vantec TF8025 case fan is a powerful cooling solution for today's desktop computers. The temperature control sensor adjusts the fan speed automatically, keeping the noise level at the lowest by changing the speed. With durable 80mm blades, the fan minimizes power consumptions and maximizes cooling performances. In addition, the double ball bearing fan ensures extended fan life. Whether you’re arming one desktop or several workstations, equipping this first-rate cooling fan will ensure you solid protection and superior value.

With only 7 drives you do not need a 750W power supply. I specked a 750W for 15 drives when I calculated my power needs. That was using very conservative estimates, ie all 7200 RPM high current drives.

If you already have it sure. I would not purchase a drive that small. CaptainSpalding asked a good question, what size is your parity drive today.

If you have any smaller 1-2Tb drives in the system, I would buy a 4TB, upgrade a smaller driver and re-purpose the original into a cache. If your moving the files from your local PC, then just keep the originals until the mover transfers them into the array. I personally wold not use a SSD as a cache, even though it would be nice. I advocate using a larger spinning drive as the cache as it allows you to use a share on the cache configured to not be moved to for other purposes. For example, I am playing/setting up a configuration using btsync on my server to sync with a raspberry pi nas to sync data to a remote location for off site storage.

When you get them, set them side by side just like they will install in your system. Look at the hole pattern on the side where you attache them to your case. They are not always assembled the same way. You can easily change them so they are all the same. Quality control is not the the best on these. As far as the fan goes, the more air you can move through them the better. I have the Coolink SWiF2-800 Fan and really which I had purchased the 801.

Newegg shell shocker deal $69.99 plus an additional $20 rebate plus free shipping. Today 8-9-13 only. SeaSonic M12II 750 SS-750AM 750W ATX12V / EPS12V SLI Ready 80 PLUS BRONZE Certified Modular Active PFC Semi-modular Power Supply New 4th Gen CPU Certified Haswell Ready I am not sure if this is a single 12vdc rail or not. http://www.newegg.com/Special/ShellShocker.aspx?cm_sp=ShellShocker-_-17-151-107-_-08092013_2

What prostuff1 said.

You would probably be better off with the 801 version of the fan vs the 800. I have the 800 and wish I had ordered the 801. The small difference in noise vs the extra 4.3cfm of air flow would be nice. With that said, the only time it would really be needed is when you are doing a pre-clear or running a parity check/write. http://www.quietpcusa.com/Coolink-SWiF2-801-Quiet-PC-Cooling-Fan-80mm-P691.aspx