I have two machines currently running FreeNAS-11.3-U5; one machine is a server class with Xeon E-2236, 64GB ECC RAM, 4x4TB IronWolf in Raidz2, while the second machine is an old Core2 Duo, 8GB RAM and the same 4x4TB IronWolf drives in a Raidz2 configuration. I want to upgrade at some point in...