You can build one with spinning 2.5 drives that are costlier than the 3.5 ones. So it's not about not needing spinning drives - for lots of redundant storage 3.

You can build one with spinning 2.5 drives that are costlier than the 3.5 ones. So it's not about not needing spinning drives - for lots of redundant storage 3.5" drives are still the most economical choice.