Error: vSAN add-on license assignment fails due to TiB capacity mismatch in VCF Operations 9.x
Article ID: 411654
Updated On:
Products
Issue/Introduction
In VMware Cloud Foundation (VCF) 9.x environments, attempting to assign a vSAN add-on license via the VCF Operations portal may fail with a grayed-out "Assign" button. This occurs when the licensed capacity does not meet the total raw physical storage requirements of the cluster.
Symptoms
- The Assign button for the vSAN add-on license is grayed out in the VCF Operations portal.
- Clicking the red exclamation icon reveals an error:
Used Capacity – #### TiB, Allocated Capacity #### TiB – ‘To assign this license, it must have allocated capacity of #### TiB’. - The issue occurs even when actual logical usage is below the licensed limit.
Environment
- VMware Cloud Foundation 9.x
- VCF Operations Manager
- vSAN Add-on Licensing
Cause
VCF 9.x validates vSAN add-on licenses against the Total Raw Physical Storage (TiB) contributed by all hosts in the cluster, rather than logical data usage. A rounding discrepancy (e.g., 1 TiB difference) between the hardware's reported raw capacity and the entitlement provided in the license file will block the assignment. This is frequently observed in air-gapped or disconnected deployments where licenses are manually generated.
Resolution
- Verify the exact Total Raw Physical Storage reported by VCF Operations for the cluster.
- Compare this value against the Allocated Capacity in the current license file.
- If a discrepancy exists, contact the Broadcom Account Team or Licensing TAM to adjust the entitlement to match the hardware's raw reported TiB.
- Once the updated entitlement is processed, download the new license file from .
- Import the revised license into VCF Operations and assign it to the affected vCenter.
Additional Information
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