I currently have 2 x 2node SQL2012 (Standard) Cluster, both of these clusters are in the same domain, all nodes running Win2012 (Standard).
The first Cluster is the live cluster which will have 2 Instances (1 of those for Sharepoint).
The Second is the DR Cluster, my original plan was to mirror the databases from 1 cluster to the other.
However, should I make use of AlwaysON High availability?
Would it be as simple as creating the availibility groups across the 2 current clusters, or would I need to start again?
What would i gain from using AlwaysON compared to 2 clusters and mirroring?
How does licensing affect this? as curently i only need to license the active node on the first cluster as it is activer passive and the 2nd cluster is just for mirroring so no license required.
Thanks