Comment Re:Wrong place to put a failsafe? (Score 4, Informative) 137
Split brain is a possibility, if the link between the primary and backup dies. Remus replicates the disks rather than requiring shared storage, which provides some protection over the data. But there are already a number of protocols for managing which replica is active (e.g., "shoot-the-other-node-in-the-head") -- we're worried about maintaining the replica, but happy to use something like linux-HA to control the actual failover.