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ESX 4.0 to 4.1 and Vsphere 4.0 to 4.1 Migration
Currently my company has 4 esx hosts running in 2 seperate HA Clusters. The clusters are currently hooked to Vsphere 4.0 running a 32 bit OS. I have build another box and installed Vsphere 4.1. I need to upgrade my hosts to 4.1 and move them to the new Vshpere 4.1 box. Is their a way to accomplish all of this without shutting down any of my Vmware guests. What would be the correct order to do this migration ? Also Im a running Vmware Enterprise Plus.
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Can I do the upgrade in the following way.
1) Remove the Cluster from Vshpere4.0
2) Add Cluster to Vsphere 4.1
4) Remove HA
3) Vmotion VM Guests to host 2
4) Do upgrade 4.1 on host 1
5) Vmotion VM guests to host 1
6) Do upgrade 4.1 on host 2
7) Reconfigure HA
1) Remove the Cluster from Vshpere4.0
2) Add Cluster to Vsphere 4.1
4) Remove HA
3) Vmotion VM Guests to host 2
4) Do upgrade 4.1 on host 1
5) Vmotion VM guests to host 1
6) Do upgrade 4.1 on host 2
7) Reconfigure HA
Yep, then a #8 would be to upgrade VMware Tools on your VMs.
http://www.vmware.com/pdf/vsphere4/r40/vsp_compatibility_matrix.pdf; pretty much you can't have legacy versions running - you have to have 4.1 vCenter and ESX/ESXi Hosts together, which is a bit different from prev versions and upgrades.
~coolsport00