Why did I waste my money?
I haven't had a single upgrade since 7.x where I didn't need support to assist. Today, I can't even open a freaking ticket. Dell has removed all of my systems from my install base, and insists none of them have valid service tags. Wasn't the entire sales pitch of VxRail single click upgrades? Literally 0% of my upgrades since 7.x have worked without support intervention. This is with me doing vxverify before attempting to even download the upgrade. Rebooting iDRAC on just about every host when vxverify fails, etc.
Save your money, get vSAN ready nodes.