On 12/13/10 12:44 AM, RedShift wrote: > I'd stay away from AoE for high availability, I've tried it at home but performance can fluctuate and the AoE driver present in CentOS 5 is way too old. I wasn't able to build a HA setup without corrupting data when failover occured. > Any HA block storage structure will have data corruption issues on failover if there was dirty write cache on the failed controller, unless it implements some form of cache mirroring. cache mirroring is rather expensive performance-wise and not doable with any off-the-shelf software I'm aware of.