File Server/NAS Build

[Ophidio]

I'm planning on building a File Server/NAS for myself and some friends and my family to use to keep all of our random files that we don't won't taking up space on our personal systems or files that we would like to share. I've never really thought about what would need to go in so I did a little research on and watched some video on what I might would need in the build but I'm still unsure if I'm even choosing the right parts. I'm also unsure if it will need a video card, if it does that shouldn't be a problem since I'm planning to upgrade my personal system video card as well so I can just use the one that's in my current one (GTX 760). There is a chance I might end up hosting a minecraft server or some other random server for games off of it as well so I don't really know if 16GB will be enough (I know it is for minecraft) for some games that I would want to host a server for. 

 

Can anyone help me makes this build better? Possibly cheaper? I do really want the 16TB of storage considering lots of movies and videos will be kept on this system. 

 

PCPartPicker part list / Price breakdown by merchant

 

CPU: Intel Xeon E3-1231 V3 3.4GHz Quad-Core Processor  ($232.99 @ SuperBiiz) 

CPU Cooler: Noctua NH-C14S 82.5 CFM CPU Cooler  ($79.65 @ Amazon) 

Motherboard: ASRock E3C224-V+ ATX LGA1150 Motherboard  ($157.99 @ SuperBiiz) 

Memory: Crucial 16GB (2 x 8GB) Registered DDR3-1600 Memory  ($157.99 @ Adorama) 

Storage: Western Digital Red 4TB 3.5" 5900RPM Internal Hard Drive  ($148.98 @ OutletPC) 

Storage: Western Digital Red 4TB 3.5" 5900RPM Internal Hard Drive  ($148.98 @ OutletPC) 

Storage: Western Digital Red 4TB 3.5" 5900RPM Internal Hard Drive  ($148.98 @ OutletPC) 

Storage: Western Digital Red 4TB 3.5" 5900RPM Internal Hard Drive  ($148.98 @ OutletPC) 

Case: Fractal Design Define R5 (Black) ATX Mid Tower Case  ($85.99 @ NCIX US) 

Power Supply: SeaSonic 520W 80+ Platinum Certified Fully-Modular Fanless ATX Power Supply  ($120.99 @ SuperBiiz) 

Total: $1431.52

Prices include shipping, taxes, and discounts when available

Generated by PCPartPicker 2015-12-31 02:49 EST-0500

 

Also, I noticed I didn't include a SSD so I will be adding a 256GB Samsung 850 EVO to for a boot drive. Can someone recommend a OS though? Is there a specific type of Windows I should get for this system or could I just stick with Win10 Pro?

 

Thank you for any help, don't really know much about building a a system like this so I appreciate every bit of help I receive on this post.