8 physical ESX host and VCenter upgrade from version 6.7 to 7.03 latest release

Upgrading 8 ESX host servers from version 6.7 to 7.03 latest update. We currently have sd cards. Migrating to physical hard drives. The upgrade will be a backup of the old config and new install of 7.03 then implort of the backup. Servers are Dell R430 x2,, Dell R630 x6. Host using Distributed Switching. No special Vibs. Nimble 7.0.0-650012 add on installed. Few errors "systems logging not configured" HA isolation error on 1 server. ESX host certificate Status error on 1 server. Need to remove vmware NSX add on.