From: Alex Dean > On Apr 9, 2012, at 11:42 PM, Stephen wrote: >> ok here is something i haven't considered in this way. >> Openfiler with drbd > drbd is great if both cluster nodes are in the same data center. > Over the internet… not so much. The latency will kill your > performance. Check it out for your scenario, though. If you have > the right pre-requisites, drbd is pretty great. However, DRBD is basically "replicate one block device to one other block device". There's not much support for 3-node setups. (Stacked resources allow you to do this, but it looks like a total pain.) Also, DRBD's dual-primary mode will only work right if multicast is enabled on your network and you're using OCFS2 or GFS2 on the device and running the distributed lock manager. OCFS2/GFS2 are slower than ext3 because of locking/replication/the paranoia of making sure everything's always consistent on both nodes. I'd say that a solution would probably involve regular rsyncs instead of DRBD, given that the original post mentioned multiple sites. -- Matt G / Dances With Crows The Crow202 Blog: http://crow202.org/wordpress/ There is no Darkness in Eternity/But only Light too dim for us to see --------------------------------------------------- PLUG-discuss mailing list - PLUG-discuss@lists.plug.phoenix.az.us To subscribe, unsubscribe, or to change your mail settings: http://lists.PLUG.phoenix.az.us/mailman/listinfo/plug-discuss