Network Block Devices » DNBD

Developed for wireless networks the multicast is a good idea to save on traffic because every single packet is sent over the same media (air). If used in wired switched networks (classical ethernets up to 1 Gbits throughput) a large load is put onto the switching unit: It has to duplicate each multicast packet for every connected machine. And every connected machines sees every block device dependent packet.

So it might be of interest to use the failover and small footprint characteristics of DNBD in a normal switched LAN environment in classical unicast mode, which should scale better and put less load onto the network ...