I got a 16 GB USB3 drive that I'm thinking of using for running ESXi and napp-it app from. This way, I can use all of the SATA ports for HDDs. I think this is technically doable and much cheaper than me going out and buying 2 x 60 gb SSDs and losing 2 sata ports. Is this a good idea? I don't know how much IO there is on the USB3 drive itself once napp-it is up and running. And is Read/Write to the zpool going to degrade because of a slow OS drive?