February 3, 2020 at 4:34 pm
Hello,
I am currently with an environment that has an active/active cluster, each server has 16 cores/ 128 gigs of memory, and trying to figure out the licensing, wondering if we would have to pay for the licensing for both SQL servers since they are active active?
I am thinking would it be better for licensing, performance, usability, and of course Fail over/DR purposes to go with Always On for this situation and migrate off the Active/Active cluster?
thanks in advance
February 4, 2020 at 8:18 am
As with anything licensing, your best off speaking to Microsoft and/or your license reseller, they know your specific terms, do not take what is said on a public forum as truth. Always speak to the main body for your query or an authorised representative.
So if the cluster is active/active, then yes you will need to pay for 32 cores.
As for the last point, it depends on a number of factors. What edition of SQL do you run Standard/Enterprise? They have different functionality with AOAG's so may/may not be fit for purpose if you have Standard. How you split out the instances, as your active active, guessing you have more than one instance, how much CPU you need, RAM you need per instance etc, how you need to configure HA and DR.
If you where to do it and have Enterprise, I would start by building either a 4 node cluster, or 2 x 2 node clusters and segregate the instances to their own failover pairs in an AOAG setup, but depends on how much CPU and RAM each need, you could get away with a smaller setup, but again it depends.
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