Cluster Migration - Cluster operating system rolling upgrade vs. Setting up a new Cluster?
All- I currently have a Server 2012r2 cluster running with two nodes. I have just received two new hosts/servers with server 2016, I was wondering what would be the best option, Rolling Upgrade or just setting up a new cluster all together, and migrating the VM's to the new cluster.
-Side Note worried about different CPU versions affecting live migration during the upgrade period, and only migrating hosts at this time. Storage migration will take place after.
Notes on the migration
1. Old Server 2012 R2 nodes would be retired / DR use after the migration would be complete.
2. Processors would still be Intel but new versions - 2014 Xeons vs 2018 Xeons.
a. Current Cluster Processor Types - Intel Xeon E5-2640 v2
b. New Host Processor Types- Intel® Xeon® Silver 4116