Jaime is correct (+5), Cisco UC apps are listed as compatible with major version of ESXi such as 6.0, 5.5, etc., so any minor release is supported. The supported version can be seen here:
Hi All, Planning to upgarde 6.0 to 6.5 Exsi VM ware. Running CUCM version is 10.5.2.13901-2
after VM upgarde do we need to rehost licenses ? any doc or steps for such upgarde EXSI ?? Can we do snapshot of each Application under Esxi VM 6.0 and then use this snapshot in exsi VM 6.5???
We upgraded from Exsi 5.5 to 6.5 with no issues whatsoever noticed. I don't even think I got an alert, but regardless there was nothing that I had to do and everything has been running on 6.5 for a few months now.
I asked the person that handled this particular upgrade in my organization. He opened a ticket with VMware just to be safe when he did this. First he created a new Vcenter with 6.5 as the operating version. Then he migrated/joined the 5.5 host to it. Then he upgraded the host itself to 6.0. Once you go to 6.5 on the host you will have to upgrade the vm's on the host, i.e. reinstall with the new OVA's. There were a few other particulars he mentioned, but if you open a ticket with VMware, they will walk you through every aspect of it and what the impact will be.
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