Hi Roeleveld-san, Thank you for your advice. But My purpose is to test PostgreSQL which data cluster is in NFS server. As your says, Cluster Filesystem is one of answer of sharing files. But my company still want to use NFS server. So I want to know how to use PostgreSQL using NFS. By the way,The manual says, "if possible, mount NFS file systems synchronously (without caching) to avoid this". I want to know what means synchronously with out caching. In other word, which NFS options we must use follwoing the manual. sync ? or noac ? or both ? Thank you , Iwao Shikase (2010年06月24日 17:38), J. Roeleveld wrote: On Thursday 24 June 2010 06:42:52 Iwao Shikase wrote:Hi This is shikase. I have a question about PostgreSQL on NFS Server as follows. Please let me know advice about that. If I posted the wrong mailing-list, please let me know.Why not use a real Cluster Filesystem? http://en.wikipedia.org/wiki/Clustered_file_system NFS is nice for sharing files between multiple systems, but most server products specifically mention it is not compatible with file sharing protocols like NFS/CIFS/.... -- J. Roeleveld email:shikase@xxxxxxxxx |