This WD was working fine in old 2008 iMac by firewire. Now I try to connect to an 2015 iMac with Mac OS High Sierra and I see a external drive but not a dual WD RAID is detected. Is like another external drive more, not detected like a dual storage RAID and the software of WD can’t let me configure a drive that no detect like a WD.
Sorry, my english is not very good but I need help.