Are there any arguments against adding subsequent node to CM 6.x cluster during Business Hours ?
I've been looking through Admin Guide, Installing Guide.
Nowhere exists any warning about recommendation to move such an operation to non-business time interval.
I think it's not hours for the whole process but it needs much system ressources like processor.
With RTMT you can watch your DB replication Status under "performance-> "yourfirstserver" -> Number of Replicates Created and State of Replication->Replicate_State"
This displays the state of replication: Thus 0 = Initializing (Will be 0 if server is not defined OR if server is defined but realize template is not done); 1 = Replicates created but their count isn't right; 2 = Replication is good; 3 = Replication is bad in the cluster; 4 = Replication Setup didn't succeed
After adding a node, your count should say "2" on every server.