For completeness, there are some situations where we ensure that both partitions hold the same version: - New roll-out of a switching infrastructure with a new, clean configuration - Adding a new switch into an existing infrastructure - we know the firmware works. Especially when sending the switch to a remote environment where a 3rd party technician might have to touch the system as well. With previous firmware versions we also liked to have the same partition being active on all switches, so that the upgrade command specifying the primary or secondary partition would work on all devices. This is not the case anymore since Extreme introduced the parameters of active/passive partition. One more note... as you are planning a major release upgrade, I recommend to test the upgrade on a spare switch first. Then take your time to check the new configuration file. Then, once you are happy, see if you can isolate one part of your network to upgrade first, and make sure you are happy with the results. Then do the rest.