This build is for my Proxmox VM server. My Plex server is on one of the VMs. I have a separate file server that contains the actual media.
The server is located in my living room (coax comes in the living room and I can't run any cables in walls, I rent). I wanted it to be really quiet so I added 6 Noctua NF-A14 case fans (3 intake, 3 exhaust) and have them all spinning around 800 rpm. I also used big heat sinks and added a second fan to each (2 Noctua NH-U12DXi4s with 2 Noctua NF-F12s each). The CPU fans spin around 1100 rpm. The hard drives in my NAS are much louder than this server :)
Because this is a server, it never really idles. I have cron jobs that run every minute. So I will instead show the minimum, maximum, and average temperatures for the past month (rounded to integers). All temperatures are recorded every 60 seconds.
Been running well for about 3 months now (as of January 2017).
P.S. Up close pictures are from before I received the M.2 adapter so the adapter and SSD are absent.
2 Year Update:
It's been about 2 years of continuous use and everything is still going fairly well.
There is a firmware issue that causes the motherboard to start spinning all the fans at 100%. The only way to correct the speed is to restart the system which obviously is not acceptable. So I added a fan controller to control the case fans. I switched the CPU fans to constant speed instead of temperature controlled in the BIOS which prevents this issue for those fans. Obviously this means under load I don't get more air flow, but this isn't a problem because the system is still more than capable of cooling itself. I made this change about 18 months ago because the low noise adapters just weren't quite enough.
Other than that, everything is peachy. Quieter than the hard drives in the NAS. More performance than I can actually take advantage of. Zero maintenance.
If you want to run a Plex media server that will keep you and your family satisfied (zero buffering, multiple simultaneous streams, fast metadata for the UI, huge library) then I highly recommend doing something like this.
Cheap (if you buy used) 8 core processor. What's not to love? For home servers, great buy.
Added a second fan (push/pull), probably didn't need to though. Exactly the right size for ASRock EP2C602-4L/D16 dual socket motherboard. Any bigger and they would hit each other. The only problem is because they are so close, you can't remove the CPU fans without taking the cooler off the motherboard. Ideally, the fan mounts would attach at the top and bottom instead of the sides so the cooler could be the same size.
There aren't a lot of dual socket LGA2011 motherboards on the market so this is probably still one of the best options. I love how many NICs it has. It has a BMC. No sound but that is expected. USB 3.0 would be nice but I would probably never even use it. I would give it 5 stars if it weren't for one issue.... the firmware. It randomly decides that all of the fans (case and CPU) need to spin at 100%. The only way to get them back to your settings is to restart. Anywhere from 1 day to 1 week later, it does it again. Yes, I replaced the motherboard with a brand new one. No, it didn't fix the problem. ASRock support was helpful at first but they don't know what the problem is and I haven't heard back in awhile. Solution: add low noise adapters to fans and just let them run at full speed.
Cheapest 64GB of DDR3-1600 ECC ram I could find.
Fast. Honestly, faster than I need. For a home server, probably wouldn't notice a difference if it was half the speed it is.
Good build quality, not the best but not worth paying more for better. Lot's of fan placement options. It is about the smallest case you can get that will fit an SSI EEB motherboard. The large motherboard covers some of the cable pass throughs making it a little harder to work with.
It's a power supply.... It's titanium rated, modular, and has two CPU connectors. I don't know if the fan is running or not but I have never heard it. I'm not sure what else I could ask for...
The Noctua NH-U12DXi4 comes with one, added another for push/pull. Still very quiet.
It's a quiet 140mm PWM fan. I like it so much, I have 6.