vamwre upgrades

Have ver5.1 cluster with a physical vcentre . I am planing to upgrade to esxi ver6.1 environment
Here is my plan,
1. Perform inplace upgrade on vCentre
2. Purchase an addition esxi host install ver6.1 and add that esxi to vCentre( we will have ver.5.1 and ver6.1).
3. Migrate vm from another esxi then install esxi ver6.0 .
Continue one at a time.
My question Can ver.5.1 and ve.61 co-exist in a cluster?
Appreciate your comment and any suggestion .
LVL 2
sara2000Asked:
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
1. Correct.
2. Correct.
3. Correct.

My question Can ver.5.1 and ve.61 co-exist in a cluster?

Yes they can, but just do NOT create an virtual machine version 11 machines, because they will not migrate back to 5.1.

Also make sure you Hardware is on the HCL for 6.x. and you use the OEM version of ESXi for your vendor servers for installs and upgrades.

see my EE Article

http://www.experts-exchange.com/articles/17527/HOW-TO-Install-and-Configure-VMware-vSphere-Hypervisor-6-0-ESXi-6-0.html
sara2000Author Commented:
Andrew ,
Wonderful articles, is there any article for windows based venturer upgrade/installation? unless i did not see it.
Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
it does not really warrant an article.....because an in-place upgrade of vCenter Server

is this....

http://www.experts-exchange.com/articles/19139/HOW-TO-Install-and-Configure-VMware-vSphere-vCenter-Server-6-0-for-Windows.html

it's basically insert the CDROM/DVDROM, or ISO, run setup, follow the Wizard, clicking Next to upgrade....

done.
sara2000Author Commented:
Look like vmware favor the  venturer appliance,
Would you recommend the existing ver5.1 inplace upgrade or new installation ?
We still want to stay with windows based physical vcentre for now.
Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
We are great fans of the new installation approach, but to be honest I would try a 5.1 in place upgrade, and if it all goes wrong, just complete a new installation.

Yes, the vSphere Appliance, is now much better, we will switch to it, when we move the vSphere 6.0, but our large Prodution Cluster is still on 5.5 U3, no time  migrate it.!

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