What-If in VMware vRealize Operations for VxRail/vSAN Host adds to Cluster

One of the things I enjoy about VMWare vRealize Operations is the ability to add or remove HCI nodes in a cluster.  I don’t know if I have been fortunate or unfortunate in my career but I have had to do a lot of VxRail/vSAN Ready Node adds.  On some occasions I have been requested to remove hosts from one cluster and build a net new cluster.  With this comes the question of is it possible.  I hope the below step by step on how to pan for adding hosts is useful.

Article on same process for removing host

How to use What-If

Screenshot from the vRealize Operations Add HCI Nodes What-If walkthrough at step 1; the adjacent article text explains that home > Optimize Capacity > What-If Analysis > infrastructure Planning: Hyperconverged > ADD HCI NODES.

Home > Optimize Capacity > What-If Analysis > infrastructure Planning: Hyperconverged > ADD HCI NODES

Screenshot from the vRealize Operations Add HCI Nodes What-If walkthrough at step 2, showing SCENARIO NAME; the step instructs the user to give the Scenario a name.

Give the Scenario a name

Select the vCenter and the cluster you want to add the hosts into

Select number of servers

Select server

Screenshot from the vRealize Operations Add HCI Nodes What-If walkthrough at step 3, showing Select Server Type; the step instructs the user to select server.

Select the VxRail model that is currently in cluster then ok

Screenshot from the vRealize Operations Add HCI Nodes What-If walkthrough at step 4; the step instructs the user to select the VxRail model that is currently in cluster then ok.

Run Scenario

Screenshot from the vRealize Operations Add HCI Nodes What-If walkthrough at step 5, showing Scenario Results; the step instructs the user to run Scenario.
Screenshot from the vRealize Operations Add HCI Nodes What-If walkthrough at step 6; the step instructs the user to select the VxRail model that is currently in cluster then ok.
Screenshot from the vRealize Operations Add HCI Nodes What-If walkthrough at step 7; the step instructs the user to select the VxRail model that is currently in cluster then ok.
Screenshot from the vRealize Operations Add HCI Nodes What-If walkthrough at step 8; the step instructs the user to select the VxRail model that is currently in cluster then ok.

Summary:
It is a pretty quick and seamless process to see if adding X number of hosts will meet your growth requirements.  Bonus is that you can take screenshots and put them into a report.  As always, I hope y’all found this to be useful.

Keep exploring

Choose your next step

Continue with the path that best matches the architecture or operating challenge in front of you.

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