9.1(2) to 10(5) Upgrade - we are already virtual on UCS
We are looking at upgrading from 9.1(2) to one of the 10.5(1) in the semi near future. We have two physical UCS servers, on each of them is a CUCM virtual server (at 9.1(2) and clustered with the CUCM on the other UCS) and a Unity Connections virtual server (at 9.1(2) and clustered with the UC virtual server on the other UCS).
I am just starting to research the upgrade, and am reading about the Prime Collaboration Deployment servers... is it a necessity to build one of these and make use of it to accomplish this fairly simple upgrade? We are a small shop, and really not looking for an additional virtual in the mix to manage. In addition, I am not sure if resources on our existing UCS servers will allow for 'carving out' a new set of resources for hosting this Prime Collaboration Deployment server.
Is it possible to upgrade a CUCM pub/sub and Unity Connections pub/sub setup from 9.1(2) to 10.5(1) without building and using the Prime Collaboration Deployment server?
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