> -----Original Message----- > I'd use GFS to make sure that data is not corrupted. You can > "live" with > ext3 -- but in case of a problem, if two postmaster directly > accesses the same node, data problem may occur. It's not just "if 2 systems access it at the same time" - the filesystem itself my get corrupted (yes, I've seen journaled filesystems get corrupted.) Which means the filesystem on a SAN becomes a single point of failure. For this reason, I have a 3rd MySQL server set up as a slave replication server to my clustered MySQL database. It provides that extra layer of protection against this SPoF. Food for thought. --Jeff SME - UNIX OpSource Inc. PGP Key ID 0x6CB364CA -- Linux-cluster mailing list Linux-cluster@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/linux-cluster