Hi We are implementing Oracle Apps 11.5.9(CRM). There will approx 1000 user at any point of time. We are planning to implement Oracle 9i RAC. I am sure that Common Storage (SAN etc)is mandatory for RAC but i am getting contradictory views on whether raw file system is compulsary or not. List can u help me on this.Also if raw file system is manadatory then is there any 3rd party tool avilable which can help in managing of file on raw file system taht is how can i see free space avilable on server , backup commands other then dd.moving or copying of files etc Our platform is AIX 5.2 (P690 machines) and EMC storage box Regards Pawan Dalmia Oracle DBA-Business Intelligence Desk-566 Cell 9819718753 -- //www.freelists.org/webpage/oracle-l