SQL Availability Groups in Azure

  • We have a SQL 2014 Availability Group in Azure which is Active / Passive. As we need to license the secondary replica Passive node in Azure even though it is passive (you don't need to on-prem) we are trying to limit the amount we need to spend on licensing.

    Question is it OK (but maybe not recommended) to run node A with 8 cores and node B with 4 cores to reduce licensing costs? If node A fails and we need to fail over to B, we can increase node B to 8 cores and reduce node A to 4 cores while the issue is resolved.

  • First: NO

    Secound: YES

    Here the Information from MS:

    How do I license SQL Server within Azure Virtual Machines deployed in an active-passive configuration?

    Each of the Azure Virtual Machines deployed requires licensing for SQL Server. To accomplish this, you can do the following for each virtual machine:

    Obtain a SQL image from the Azure VM marketplace and pay the per-minute rate of SQL Server, or

    Install or upload your own SQL Server image using the license mobility benefits under Software Assurance

    See the following link:

    http://azure.microsoft.com/en-us/pricing/licensing-faq/

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