VMware vCenter Server 6.5.0b Release Notes | 14 MARCH 2017 | ISO Build 5178943
vCenter/VCSA 6.5 should be upgraded to 6.5.0b (aka 6.5 b) before upgrading your host(s) to ESXi 6.5.0a, which is still the latest ESXi version by the way.
There's a nice benefit to 6.5.0b, see also the closely related article:
- First vSphere Client (HTML5) update in vSphere 6.5.0b!
Additional functionality to the vSphere Client. This release delivers additional functionality to the HTML5-based vSphere Client. For more information, see Functionality Updates for the vSphere Client.
Once in a while, things are easy. One of the selling points of making the big move from vCenter+Windows to VCSA has been the ease of VCSA upgrades through the handy VAMI web UI. Yep, works as advertised, just like it did when going from 6.5 to 6.5.0.a back in February. This is a very easy upgrade, as shown screen-by-screen walk through below, and in the video below.
- VCSA 6.5.x with internet access
If your VCSA has no internet access, follow the offline install procedure at:
Do this VCSA 6.5.0b upgrade in a test environment first! Before attempting, you should be sure to have a full backup, such as the simple native VCSA backup button seen at top-right. You can also use a 3rd party backup solution. At a minimum, you can do a snapshot of this VCSA VM before upgrading, make sure everything works alright, then remove the snapshot, ideally within a day or so, to avoid performance degradation
If you're looking for how you get from 6.0.x to 6.5, that's more of a migration, and the right article for you is over here:
If you're looking for how you get from ESXi 6.5.x to 6.5.0a, that article is over here:
- How to easily update your VMware Hypervisor to ESXi 6.5
Nov 20 2016