Cluster Upgrade - Version Mix

[s1m0nb]

Just to make my life easy.....

Is it possible to upgrade a cluster one host at a time 3.0.2 to 3.5 ; therefore have a temporary mix of host versions in a single cluster? Or do I have to upgrade, create new cluster, and relocate the guests to the new cluster?

[Yattong · Accepted solution]

hi,

It shoud be fine, as you will need to upgrade the VC first which in theory be backwards compatible.

Follow the upgrade guide http://vmware.com/pdf/vi3_35/esx_3/r35/vi3_35_25_upgrade_guide.pdf

If you wanted to be extra careful, I would suggest just disabling HA.

Good Luck