Personally, I'd say skip the Exadata platform - why lock yourself into a proprietary architecture? Buy 100 2 x 4-core processor servers with 48GB of RAM each. That should give you a really good sense of whether your application will scale in RAC environments. Of course, to make sure I/O doesn't become a bottleneck, I'd recommend a 2000-disk EMC VMAX with a mix of flash and fibre channel drives. Each one of the servers should have at least 4 4-Gb/sec links into the SAN. This is just for the development environment, of course. Or, the OP could just google "oracle rac test environment" and see the options presented. For me, the third one is "Build Your Own Oracle RAC Cluster on Oracle Enterprise Linux and iSCSI", which definitely won't be as fast as our solutions, but is almost certainly cheaper. Or, the sixth option down the page is a presention by the always-popular Dan Norris on building a RAC environment with VMware. Matt -----Original Message----- From: oracle-l-bounce@xxxxxxxxxxxxx on behalf of Robert Freeman Sent: Sat 1/23/2010 11:52 AM To: verma.labs@xxxxxxxxx; Oracle-L Freelists Subject: Re: Oracle RAC Server Conf. I'd buy 2 Oracle Exadata 2 servers with about 10tb of storage. You can do lots of testing there!! OH! You say that does not meet your budgetary requirements? Did you mention what your needs or requirements were? RF Robert G. Freeman Oracle ACE Ask me about on-site Oracle Training! RMAN, DBA, Tuning, you name it! Author: Oracle Database 11g RMAN Backup and Recovery (Oracle Press) - ON ITS WAY SOON! OCP: Oracle Database 11g Administrator Certified Professional Study Guide (Sybex) Oracle Database 11g New Features (Oracle Press) Oracle Database 10g New Features (Oracle Press) Other various titles Blog: http://robertgfreeman.blogspot.com Check out my new blog series on installing Oracle Database 11gR2 on Windows using VMWare! ________________________________ From: AMIT VERMA <verma.labs@xxxxxxxxx> To: oracle-l <oracle-l@xxxxxxxxxxxxx> Sent: Sat, January 23, 2010 7:49:17 AM Subject: Oracle RAC Server Conf. hi, i would like to test oracle rac 10g & 11g. please advise me what os, vm & hardware should i use.. thanks in advance amit v -- Amit Verma v.amit84@xxxxxxxxx "Winning takes talent but it takes character to keep winning"