Anyone able to clarify hardware requirements/ spec for me? Looking to set up a small rancher to manage a harvester cluster. I intend to use 3* dell r230 (E3-1230 v6, 8gb maybe 16gb of ram) For storage I was going to use some 400gb SSD drives I have. Should I put two of these in each node and set them up as raid or does the fact that I have 3 nodes remove the need for raid?