I am planning the upgrade of a vSphere 5.0 infrastructure (vCenter 5.0 and ESXi hosts 5.0) to version 5.5 u2.
We will start from the vCenter
For some times (days or weeks) we will have different versions:
At the end of the process everything will be alligned to version 5.5 u2.
Is there any known issue or anything to consider for the period whith all the ESXi nodes or some ESXi hosts still running 5.0?
Is there anything we won't be able to do or we should do in order to let the whole of thwe infrastructure run without causing problems to users?
Regards
Marius
Probably the most important part would be to make sure all of the nodes in a cluster are at the same release.
Curious - why did you choose 5.5 u2 over 6.0?
There is no big issue of have different versions during the migration process, just take in mind that for example if you create a VM on vSphere ESXi 5.5 using Hardware Version 10, this VM will be unable to boot on vSphere ESXi 5.0 hosts.