Oracle Database Tips by Donald Burleson

Oracle10g Grid Computing with RAC
Chapter 5 - Preparing Shared Storage

PSFS File System

The Oracle Disk Manager (ODM). ODM is an API specification for I/O designed by Oracle. PolyServe's ODM offering, MxODM, is a plug-in module for PolyServe's cluster file system. MxODM comes bundled with either the Oracle RAC Option or Oracle Option for Matrix Server.

• Device Naming and Utilities - Cluster-wide device naming and file system utilities simplify administration and maintenance of the cluster. MxS provides a pseudo device layer that ensures consistent device naming across the cluster, and provides various tools for file system maintenance, including fsck, file system suspend, and resume and file system growth.
   

• PSFS also supports context dependant symbolic links that allow administrators to configure node-specific files.
   

• MxS supports all Oracle data files, logs, and further supports advanced Oracle9i functionality, including external tables, export/import from text files, and archived redo log compression.
   

• MxS also supports a shared Oracle Home, which simplifies installation, configuration, and maintenance.