Prepration:

1. Verify that your LM version and new vCenter are compatible.
2. Schedule a maintanance window for about 2 - 4 hours and inform your users.
3. Document ESX root credentials as
   you will need these. You vCenter LM admin credentials as well.
4. Document LM Physical Network to ESX Host vSwitch connections. You will need to manually reconnect those.
5. Document LM dedicated vCenter Resource Pool configurations as you will need to recreate and reconnect these.
6. Document Organization to Resource Pool mappings as you will need to manually reconnect these as well.

Execution:

1. Disable all user accounts or cut off access so no one can login to LM.
2. Perform a test deploy on a known good Configuration and Template - this is your control test.
3. Un-deploy all configurations and VMs inside of LM. This should unregister all LM managed VMs from vCenter. Double check to make sure and clean up any orphans.
4. Disable and detach all Resource Pools from LM.
5. Disable and detach all ESX Hosts from LM.
6. You might want to use this opportunity to perform any maintanance or upgrades on your ESX Hosts, or not. Sometimes less variables are better.
7. Move your ESX hosts over to the new vCenter instance. Create any required Clusters or Resource Pools there.
8. Configure LM to the new vCenter instance.
9. Attach LM to the new Resource Pool object(s) on the new vCenter instance. This could be a Host, Cluster or actual vCenter Resource Pool.
10. Previous step should prepare all of your LM managed ESX hosts assuming you entered in the right credentials. Verify this.
11. Manually reconnect your LM Physical Network to ESX Host vSwitch connections.
12. Manually reconfigure your LM Organization to Resource Pool mappings.
13. At this point your LM Organization to Datastore and Media connections should be reconnected, verify.
14. Perform a test deploy on the known good Configuration and Template you used in Step #2 - this should work.
15. Reenable user accounts and/or access.
16. Send all clear email.
17. Beer.

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