IBM Cloud vCenter Server (VCS) instances are currently deployed with VUM baselines enabled. After customizing my VCS environment, here is how I switched to vLCM images:

1. Depending on the vSphere version, it is possible that the drivers provided by the default image may not be at the version level you need. Consult the VMware HCL for your ESXi version and hardware, and identify the driver version you need. Typically for 10GbE you you need i40en, for 25GbE you need icen, and for RAID controller you need lsi_mr3.
2. Locate the needed driver version for your vSphere release at VMware Customer Connect or work with IBM Cloud support to obtain it. Download the ZIP file and expand the ZIP file to locate the ZIP file inside.
3. In vCenter, navigate in the main menu to Lifecycle Manager. Select Actions | Import Updates and upload the ZIP file(s) you obtained in step 2 above.
4. Navigate to vCenter inventory, select your cluster, and select Updates | Image. Then click Setup Image Manually.
5. In Step 1, choose the vSphere version you desire for your image. Display the details for Components and click Add Components. Change the filter to show “Independent Components and Vendor Addon Components,” then review the drivers you identified earlier in steps 1-2. If the default version differs from the one you need, add it to your image. For your convenience you may want to include vmware-storcli. Then save the image you defined.
6. In Step 2, after the compliance check completes, review the compliance of each of your hosts and resolve any issues.
7. Click Finish Image Setup and confirm.
8. At this point you can remediate your cluster to the new image!