Hi,
Are you doing Cluster rolling upgrade with the guide below:
Do you mean you would like to join a Server 2016 node into the Server 2012R2 cluster, while running cluster validation, we have DSM version not match warning?
If yes, please try to ignore the warning and join the Server 2016 node into the Server 2012R2 cluster directly, check if we can join the Server 2016 node successfully?
If yes, we can just finish upgrading the other nodes to Server 2016 and then patch them to same update level and upgrade the cluster function level, after that, run cluster validation again, check if the warning still exists.
Thanks for your time!
Best Regards,
Anne
-----------------------------
If the Answer is helpful, please click "Accept Answer" and upvote it.
Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.