Correct method to disconnect a Host from Cluster in vSphere 6.0

I would like to disconnect a Host from a Cluster and wanted the correct steps to do this.  

1. I have an ESXi Host with 5 running VMs and need to disconnect the ESXi Host for testing purpose.
2. After disconnecting, where exactly should I  place it (since it will be operating as a separate Host with VMs running)
2. If I move the VMs to another ESXi Host in the current cluster; can I add these VMs back to the same ESXi Host who was disconnected.

Thank you.
cgeorgeisaacAsked:
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
Correct method by the book....

1. Enter Maintenance Mode on the host you want to test, this is what Maintenance Mode does.....is designed for, evacuates VMs, and when in maintenance mode, stops VMs being moved to it and powered on!)
2. The host should evacuate ALL the VMs to other hosts in the Cluster.
3. Remove Host from Cluster (drag and drop outside of the cluster.).
4. You are ready to perform testing.

if you need to test VMs, Exit Maintenance Mode.

You can vMotion VMs back to this standalone host, if required.
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