You need a temporary space of 312GiB to "plot" which is RAM intensive(~4GB min, more if you parallelize) and disk I/O bottlenecked(serious Chia farmers put the

You need a temporary space of 312GiB to "plot" which is RAM intensive(~4GB min, more if you parallelize) and disk I/O bottlenecked(serious Chia farmers put their temp on an SSD), but finished plots are 101.4GiB each and are just files accessed occasionally, so you can fit a dozen or so on a 2TB. If the drive goes, so do the plots, but the cost is just the time to replot so you probably don't need a backup strategy. Plotting tends to be a bottleneck - hours to finish one in my experience, though that is with using the storage drive for the temp space. But even with 26 plots(2.5 TiB) I have already earned 4 Chia in a few weeks.