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  • 1.  Add a new ressource pool to an existant Provider VDC

    Posted Aug 13, 2025 06:20 PM

    Hello,

    I have just created a new cluster to manage the new generation of ESXi (managed by a different image than the old cluster).
    So I created a resource pool on this cluster and added it to my current VDC provider.
    The storage and network are the same as the old cluster.
    I do not have a VM Placement Policy.

    However, how does vCloud Director choose where to place the VM? With load balancing?

    I also saw that the OrgVDCs need to be set to elastic mode. What is the impact of this?

    Thanks



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  • 2.  RE: Add a new ressource pool to an existant Provider VDC

    Posted Dec 04, 2025 09:48 PM

    Elastic mode means the VMs belonging to the same customer can exist in multiple clusters.

    When using multiple resource pools I have found it very difficult to determine which resource pool VCD will select. It does however work very well and VCD allows you moved VMs to different pools which is also useful.

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    Original Message


  • 3.  RE: Add a new ressource pool to an existant Provider VDC

    Posted 22 days ago

    You can indeed move VM's between Resource Pools in VCD from the pVDC -> Resource Pool -> Migrate functionality. This works well, be beware of timeouts while moving (Storage vMotions especially) VM's. You might need to edit the timeout value like I encountered:
    https://vcloudvision.com/2025/10/02/how-to-fix-vmware-cloud-director-relocate-task-timeouts/

    Furthermore, if you make the OrgVDC's Elastic, don't 'unmake' them Elastic. In the latest release 10.6.x there is a bug which does some nasty DB stuff and makes all of your OrgVDC's not Elastic at that point.

    Lastly, Loadbalancing is done based upon Placement Algorithems (Placement Engine):

    https://techdocs.broadcom.com/us/en/vmware-cis/cloud-director/vmware-cloud-director/10-5/vmware-cloud-director-service-provider-portal-guide-10-5/managing-provider-vdcs-admin/managing-the-resource-pools-on-a-pvdc-admin/about-the-workload-placement-engine-admin.html

    Usually VCD does it all by itself very well, and that is coming from a user that is managing thousands of hosts and VM's :).

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    Original Message