My server management group just merged with another server management group in my organization. In doing so, I've added seven clusters of ESX/ESXi 4.0 to my vSphere server. Our goal is to make everything uniform. While our software configuration differs, the two groups hardware configuration is almost identical, using IBM x3650s and IBM bladecenters, with the same Cisco switch components in the bladecenters (so extending the necessary VLANs shouldn't be an issue). My existing ESX 4.1 clusters are configured like this:
The "new" (to me, at least) ESX clusters are configured as such:
The "new" (to me, at least) ESXi clusters are configured as such:
That's the high-level snapshot. All of the hosts in all clusters attach to storage via Fibre channel, no network attached storage. All of the hosts in the "new" clusters are throwing configuration issues that there is no managment network redundancy - I want to fix that. I would also like to move the service consoles and VMkernel ports to our more secure, less advertised VLANs. Finally, I'd like to have all the VLANs for guest OSes available on all of my hosts across all my clusters.
My questions are what's the best method for achieving this? Reconfigure the current hosts or rebuild the hosts with the networking to match our standards? The hosts are all at 4.0 and need to upgraded to 4.1, so I could justify the rebuild (though I was thinking of doing that only with Update Manager). Also, as I reconfigure the ESX hosts, how do I move my VMs from a VM Port Group with one label to another? All of the VMs are in production, so I would prefer no service outage (but would understand and could make a case for it to management). The label makes or breaks the VMotion capability, so that's going to be important across all the vSwitches. The VLAN for VMs on the new cluster are also nearing complete usage, so being able to add additional VLAN would be highly beneficial.
Thank you for any and all assistance.