We'll review how to run a DR failover simulation in the Plan Tab. There are two scenarios that can be helpful to run:
a) At what level of utilization will my DR site be running if I failover?
b) If I don't have the appropriate amount of hardware to support a failover, what additional hardware is needed to maintain a desired state?
1) Go to the Plan Tab and start a new plan by clicking the green button in the top left corner.
2) From the scenario pop-up wizard, select Workload Migration
3) Select the "Destination" cluster - the DR site in this case - and select Next.
4) Now select the VMs that will be failing over to the DR site. Drag the VMs over to the "Plan Inventory" panel. In my example, I want to simulate my Production VMs failing over. Click Finish
5) Now to simulate scenario (a) let's tell VMTurbo to not suggest adding more hardware - we want to see just how much will be able to failover with the current infrastructure I have today.
- Next to "Advanced Settings", select "Edit"
- Select the "Action Settings" tab
- Uncheck "Allow Host Provisioning" and "Allow Datastore Provisioning"
- Click "Apply" and close the Advanced Planning Options pop-up
6) Check the "Ignore constraints" box and click "Run"
7) Once the plan has finished, click the "Side by Side view >>" text to view the "Current" and "Desired" states for hardware.
In my example, you'll see that utilization has risen up to ~90% utilization across my DR cluster when having to support the additional workload.
8) To run scenario (b) where we have VMTurbo determine what extra hardware would be needed to support a failover, you can skip Step 5.
Here, I'm failing over a few more clusters to see what additional hardware would be needed to support the load. In this case, VMTurbo has suggested adding 2 hosts to support the workload.
(Thanks to mikeellis for the suggested tutorial!)