vCenter Upgrade versions

[RicardCS]

Hi,

We are running vCenter Server 5.1.0 and all of our ESXi are running the same versión. We want to start the upgrade to versión 5.5.0. Maybe it is nonsense but we do not know the difference between 5.5.0Ua1, 5.5.0Ua, 5.5.0Ub and 5.5.0c.

Is it 5.5.0c the latest versión(and the best option)? or is it better go for 5..5.0Ua1? (Does exist any difference?).

I tried to find info but I did not find any clear answer.

Thanks in advance,

Ricard.

[rcporto]

I recommend you go to version 5.5 Update 1a and for more info about resolved and known issues, check the release notes of each version at: VMware vSphere Documentation