Are additional VDC Subscriptions required for Hypervisors with more than 2-sockets?

Solution Verified - Updated

Environment

Red Hat Enterprise Linux Virtual Datacenter Subcriptions

Issue

  • Is an additional Virtual DataCenter Subscription required if my hypervisor has 8-sockets?
  • Is more than one Virtual Datacenter Subscription required for each node in my cluster?
  • How many VDC Subscriptions are required for my 3 4-socket host?

Resolution

Yes, Red Hat Enterprise Linux Virtual Datacenter Subscriptions are a 2-socket SKU and must be matched to the socket count on the Hypervisor/node hosting the RHEL instances.

For Example:

  • If the system is one 8-socket hypervisor, you would need 4 VDC Subscriptions to cover it as they are provided in socket pairs. 

    8 Sockets / 2 sockets = 4 VDC Subscriptions

  • If a cluster has three 4-socket hypervisors in the cluster, you would need 6 VDC subscriptions. Two for each system, as they have 4-sockets each. 

    3 nodes x 4 sockets =12 total sockets; 12 total sockets / 2 sockets = 6 VDC Subscriptions

For more KB articles/solutions related to Virt-who and Virtual Datacenter (VDC) Subscriptions Issues, please refer to the Consolidated Troubleshooting Article for Virt-who and Virtual Datacenter (VDC) Subscriptions Issues

Root Cause

Red Hat subscriptions that are socket-based, "stackable" SKUs need to be applied based on the socket count of physical systems.

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