vSphere ESXi 6 upgrade with Qlogic(Brocade) BR-1020
When upgrade ESXi 6 with Qlogic (Brocade) BR-1020, you have several method. 1. Upgrade by "update manager", after upgrade re-install Qlogic BR-1020 driver (bna/bfa) manually. 2. Upgrade by CD/DVD, you need to update BR-1020 driver to ESXi5.5/6 3. Make new ESXi 6 CD/DVD with BR-1020 driver then do upgrade.