Article number
000004091
Affected Versions
All
Source Hypervisor
Azure
Target Hypervisor
Azure

Error: ‘Azure core quota limit’ During an Azure ZCA Upgrade

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Summary

During installation or upgrade of the ZCA in Azure, a validation window appears and provides warning or errors in regards to cores.

Root Cause

According to the Zerto Administration Guide, the following validation for cores is as follows:
 

  1. If you have 200 core in the region, but the core quota limit for DSv2 is set to 10, instead of the 50 minimum cores required, then during the Zerto installation an error will appear.
  2. If your core quota limit for DSv2 is set to 100, and you have 20 available cores in the region, then during the Zerto installation a warning will appear.
  3. If your core quota limit for DSv2 is set to 100, and you already have 70 cores used by DSv2 instances, then during the Zerto installation a warning will appear.

Symptoms

When attempting an Azure ZCA upgrade, the following validation dialog is seen.

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Different validation failures can be listed including the below:

Azure Region core quota limit
DSv2 Series core quota limit
Available cores in Azure region
DSv2 Available cores in Azure region

Solution

To resolve this issue, follow the steps below:

Current cores quota limits can be retrieved via the Azure portal by going to Subscriptions > {Subscription Name} > Usage + quotas (Under Settings)
Then filter for Microsoft.Compute > Location (Region) > Show all or Show only items with usage

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Alternatively you can run the following command via Azure PowerShell:
Get-AzVMUsage -Location "{region_name}"

Or via Azure CLI:
az vm list-usage --location "{region_name}"

To increase the core limit via the Azure portal, select Request Increase under the Subscription > Usage + quotas section or open a "New support request"

Further information regarding quota limits can be found here:
https://docs.microsoft.com/en-us/azure/azure-subscription-service-limits
https://docs.microsoft.com/en-us/azure/virtual-machines/windows/quotas