Question Regarding VUM and Multiple vCenters

[miguelvelezwhit]

I work in an environment with 28 vCenters.  Some are appliances, some are Windows Servers.  I have a designated Windows Server 2012 R2 which I use as a 'jumping off'point to reach any of those vCenters.

Question:  Can I install VUM once on that 'jump off' server, which would be using a full version of SQL Server 2014 - not Express, and then register the instance with each of the vCenters?  Or do I have to install a separate VUM with each separate vCenter?

This is my first time with an environment this large and I've already observed (after 3 weeks on the job), that there's a LOT of updating/upgrading to do.  Some vCenters are 4.1, some 5.0 or 5.5.  I'll be taking them all to version 6.0 Update 2 over the next few months.  Once everything is uniform and properly remediated, then perhaps the move to 6.5 (or possibly 7.0 by then) will be more uniform and a lot smoother.

Thanks in advance to the community for taking the time to read (and hopefully help) with this issue.

[bayupw]

VUM and vCenter is a one to one mapping as per the VUM documentation:

VMware vSphere 6.5 Documentation Library-Understanding Update Manager

Each installation of Update Manager must be associated (registered) with a single vCenter Server instance.

Register multiple vCenter servers to one VUM server?

number of update manager per vcenter server

[miguelvelezwhit]

If I'm understanding you correctly, this means that I will need to have 28 instances of VUM - one for each vCenter Server.  If that's correct, then I'd better get back up to speed on my deploy scripts or else give some serious consideration to using vRealize Orchestrator for the first time.  I was really hoping that I could combine some instances, it would have solved a great many challenges; particularly since 6.5 is on the horizon for us and there we have Cross vCenter vMotion. - wild.

Thank you Bayu.  With your answer, I now have the means to plan this stuff out over the weekend.  I'm very grateful