Wow, seems like forever since I have had a need to be here.
I have a vSphere 5.1 Enterprise + vCenter Server Standard (running on Windows 2012) environment that is, obviously, out of support. The required DBs are also out of support on a 2005 SQL Server. We have recently acquired some active licenses from another department in my organization that is currently using vSphere 6.0 but are retiring that environment and I have confirmed with our VMware reps that me and my department can take possession of that other department's licensing and us those to upgrade our vSphere 5.1 to to 6.7 or maybe even 7. Going to 7 will depending on our backup vendor and if we want to go to a non-LTS version of their product (allowing us to go to 7) or still with the LTS we are running today meaning we can only go to 6.7U3.
Anyway, I have confirmed all of our hardware, host servers, HBAs, 10GB NICs, Storage etc are all on the HCL for both 6.7 & 7.
Further I am not interested in historical data or doing multiple upgrades to get from 5.1 to 6.7 or 7. So I will be building a brand new vSphere platform from the ground up.
Our current setup is mostly older VMs (Windows Server 200x) and running on 2 "Very Beefy" HP Proliant DL380 Gen 9 servers. We have the capacity to run all VMs on just 1 host.
My plan is to put a host into MM and then remove it from the existing cluster. Wipe it out and install ESXi 6.7 or 7 and install a new vCenter on Windows on that host. Once done and that new host is able to see all of our storage, I will removed all the VMs from inventory on the 5.1 host and add all the VMs to inventory on the new host/vCenter. Then I will install from scratch 6.7 or 7 on that other host and add it to the new Cluster. Then I will update all VM Hardware / Tools etc, setup HA, DRS again etc and apply the licensing that I am inheriting from the other department.
Does the plan make sense? Any caveats or pitfalls to watch for?