Failover clusterign... How similar do the primary and failover instance need to be in a failover cluster?
How similar do the primary and failover instance need to be in a failover cluster?
Does the number of database have to match, naming, general config etc...
Mr Shaw
In failover clustering, you use shared storage so the number of databases is irrelevant since only one node can see/access the shared storage at any given point in time. Ideally, the server configuration should be the same on all of the nodes to minimize
potential issues that may impact downtime. However, you need to consider licensing/# of CPU-cores and implementation cost, especially if you are only using the other nodes as standby. As far as licensing is concerned, the standby has to have the same or fewer
number of CPU-cores as the primary node to be covered by licensing. Besides, you don't want your standby node to be more powerful than your primary node. This is why the option to have a hybrid deployment of having a physical server as the primary node and
virtual machine for standby nodes is now supported.
Edwin Sarmiento SQL Server MVP | Microsoft Certified Master
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