Is there a way to setup variable QoS for a traffic flow? I have an 85 Mbps metro-ethernet WAN connection between two sites. One side has a Cisco 3745 router, the other has a Cisco 2821 router. We just recently installed two SANs (one at each site) and they are mirrored. I would like to be able to setup a max bandwidth usage of 50Mbps for the replication of the SAN. And then bump it back down to 25 Mbps while backups are taking place. Right now I'm using the "traffic-shape" command to limit traffic from the SAN to 25 Mbps by matching its IPs. If I left it at 50 Mbps, then that leaves about 30 Mbps for backups which slows down my backups.
In the future, I can probably get away with just having the 25 Mbps limit. But for now, I have to replicate several terabytes of data, so the more bandwidth I can give it the better.