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On Wed, Feb 18, 2009 at 11:56 AM, Tim Barney <[log in to unmask]> wrote: > I wondered if anyone has experience using LInux-HA (High Availability) along > with DRBD (provides software SAN)? Any one use these with a couple of MySQL > servers for failover purposes? > DRBD in synchronous[1] mode tends to be slow. If database performance is something you care about I would be concerned. I have no experience with DRBD in other modes; but I'm pretty conservative and I would hate to have my app call write(somedata) with an asynchronous write that never completes because drbd is dead. I've used Linux-HA. Properly set up with network close nodes it works great. [1] Not sure if I have the right term. I mean the mode in which syscalls do not return until data is written to the remote disk. > I'd like to know of good or bad experiences. Failing any direct experience, > I'll welcome heresay. > > Tim >