For illustration purposes, I'm trying to snapshot database volumes on a 2 node DAG where each node has copies of all DBs.
So DagNode1 has DB1(active) and DB2, and DagNode2 has DB1 and DB2(active). All on NetApp disk.
Is there any reason not to snapshot DB1 and DB2 on both nodes other than potentially wasted disk space? I thought I read something about problems where snapshotting the passive DB copy resulted in problems with up to the minute recovery of the active copy because of where the SnapInfo was located.
The other question I had was in terms of configuring the snapshot tasks. I see you can configure the jobs per node, or all via the DAG name. Does this make any real difference?
I was hoping to snapshot the active DB1 on DagNode1 and active DB2 on DagNode2, and if one node failed, run the snapshots both on the same node (now DBs active on it). It doesn't look like this is possible, but might be irrelevant based on the answer to my other questions.
Thanks!