Aah. Well, if you are a hardcore computer geek, i'm sure you tried to see how much it would cost for you to build it, and how much a NAS would cost. You realized you saved money buying a NAS so that's what you did. Probably because your boss said "No way I'm spending $300 more when I can get another machine that can do the same thing!". Well, as of right now you have a low performing brick in your cabinet. I'd tell my boss "So, how's that brick working for ya boss?"
Ok, I wouldn't really say that. But there's times when you need to look at the long term possibilities vice the short term. Sure, short term looks good. But what about long term? How much does a repair/replacement cost? You can probably fix a machine that's operating as a file server, but can you fix a broken NAS from WD? If your NAS dies, are you going to have backups, because i'm betting WD isn't gonna be overly concerned with saving your data. My old job had a WD NAS. It was a software RAID-5 and when the boot partition died, what was the solution? They Fedex overnight a new boot drive, and when you boot it up the first time it'll create you a brand spanking new RAID-5. How nice for them to wipe the RAID-5 partitions for us! Of course, since it was RAID-5, and 1 drive was bad, the data was possible to recover. But what would happen if we pulled the drives out and put them in another machine to recover the data? Voided warranty. Not a good answer from either end. Unfortunately my boss wouldn't listen to me when I told him we needed to do backups, or our 250GB of data would be lost to the ether. When his boss' boss's boss called up asking WTF was going on with his data cause it's not mapping the network drive his priorities changed alot. Suddenly backups were important(cough.. for a week afterwards). We did replace the bad drive, and we did pull the other 3 drives out and copied off the data against the warranty agreement. It was more important for us to get the data and hope WD never knows what we did than to just lose the data forever.
Because of this situation, I'm not sure if I'd ever buy a proprietary NAS storage. The risks of being at the mercy of WD are quite high. I'd prefer the risks be in my hands, and if I lose the data it's my fault and not WD.