Tim Hall has stepped up to the plate to document a step-by-step recipe for setting up Oracle10g RAC on NFS mounts. In Tim’s blog entry, he points out that for testing and training purposes it is true that you can simply export some Ext3 filesystem from a Linux server and use it for all things Oracle. Tim only had 2 systems, so what he did was use one of the servers as the NFS server. The NFS server exported a filesystem and both the servers mounted the filesystem. In this model, you have 2 NFS clients and one is acting as both an NFS client and an NFS server.
If you’ve ever had a difficult time getting RAC going, I think you’d be more than happy with how simple it is with NFS and using Tim’s guide and a couple of low-end test servers would prove that out.
Recently I blogged about the fact that most RAC difficulties are in fact storage difficulties. That is not the case with NFS/NAS.