Different system versions of SZs in one cluster

[alexey_isakov]

Good day for all in the community,

Please tell me who knows.
When i will add SZ#2 with system version e.g. 3.5.1.0.296 into a cluster where SZ#1 have version e.g. 3.2.1.0.163 WHAT will be happening with both of them? SZ#1 will be updated by SZ#2? Will the APs be rebooted & updated by cluster after it? What really will be happenihg?