Failover? Redundancy? can you elaborate further on those topics? because I don't think they apply to the bitcoin world unless we are talking about a pool that needs to be up 24x7 or a market exchange, but from the miner's perspective?
Failover means that when , lets say, The State of Missouri is destroyed in an act of clumsiness typical of that state and my rig is destroyed with it, my other rig either surrenders half of its tasks and takes on the tasks of the dead Missouri rig or it takes over in full by creating more instances to make up for those lost. This is why I need huge logging space because the failover rig will have to collect data from the failed rig. The colos provide 24/7 AC and backup power so I figured I might as well take advantage of them.
Redundant means they are the same and have the ability to failover.
I think what he was asking is how you are making this work for bitcoin.
Failing over the running applications does not help you because there is no "progress" in bitcoin mining.