Hello List, We have recently implemented 2 node RAC on AIX, with ASM defined external redudancy option. We didn't come across of any performance problems with this option. However, I would like hear from any of you about the performance difference setting external or normal/high redudancy configuration with ASM. -- Best Regards, Syed Jaffar Hussain Oracle ACE 8i,9i & 10g OCP DBA http://jaffardba.blogspot.com/ http://www.oracle.com/technology/community/oracle_ace/ace1.html#hussain ---------------------------------------------------------------------------------- "Winners don't do different things. They do things differently."