Oh, do test things in production. Can’t understate the need for good network, especially with the traffic amplification of replication. I was running 2x10GE a

Oh, do test things in production. Can’t understate the need for good network, especially with the traffic amplification of replication. I was running 2x10GE and had plans to scale up the cluster network to 2x or 3x10GE. My biggest issue was the MTTR of a failed cluster. If one is RBD mirroring to a different cluster, recovery time may be hours or days. That said, I had one cluster run continuously for a couple years with basically zero administration. It had great performance and good reliability other than that one week-long service impacting incident as a result of a bug. I’d definitely run it again.