Good morning experts,
In our environment, we have an AlwaysOn Availability Group which provides us with a Primary replica and a secondary replica in a co-location for Disaster Recovery purposes. We have been more concerned with the disaster recovery concept all along and do not use the secondary replica for anything other than a fail-over replica. We would like to configure this now to utilize the read-only aspects on the secondary replica to a greater degree. The problem is, our co-location connection is a bit expensive and we cannot send all read-only traffic through that connection on a regular basis.
To counter this, we have decided to set up a third replica in our primary facility that can be used as a Read-Only replica. There is another issue though. The AG contains 13 databases. They total over 15 Terabytes in size. We only need 3-4 of them in the third replica which totals only about 750GB in size (some of the remaining databases simply contain BLOBs which we do not need to read from in this scenario).
It looks to me like it's not possible to have some databases in an AG on three replicas and others in the same AG on two replicas. Is this true or is it possible to do this? Thanks is advance.