I'm going to interject a minor item here, and that is power save modes. There is too much power saving mode crap going on to save pennies in electricity. I'm a 30-some year IT pro, and over the last 10 years this power save mode has been involved in too many bios updates. It also causes the drive to stop, cool, start, warm, stop, cool, start, warm - you see a pattern here? How tight is that data striping now? I wouldn't be surprised if there's a thermometer built into these drives to calibrate head to disc distances and sector tracking - because it has to be influenced by temperature. To me, a hard drive should always be spinning and given a comfortable temperature zone.
I just bought a new PC for my camera system, and among the first thing I disabled was power save on drives and Ethernet.
Just my .02 regarding certain things that I am not an expert on, but have an opinion.