I’ve been running a vSphere lab of my since ESX 2.x. Over the years, I’ve used both local and NAS based storage with varying degrees of satisfaction with the results. In the case of NAS storage, which is required since I can’t afford a SAN, I looked at Synology devices over the last year trying to gain the motivation to make the investment.
Needless to say, I dove in with both feet, and maxed out a Synology DS1511+ with 3TB drives. I purchased my Synology DS1511+ from SimplyNas with the drives included, including their burn-in testing, and I haven’t looked back. The device has been up and running since October 2011.