I'm planning an unraid install using some components I have knocking about. I have 4x 2TB drives, and a single 8TB drive. I notice in the documentation it states "Each parity disk provides redundancy against one data drive failing". Does this presume that all drives are the same size? For instance, using the 8TB drive as a parity drive, and the 4x 2TB drives as data drives, wouldn't the single 8TB parity allow for more than a single data drive failure (presumably, up to 3, or even 4 failures)?