I want to thank everyone for their advice. The primary reason for asking this question is so that our call center personnel can answer questions about how the hardware relates to Oracle, and to speak intelligently to administrators that lack strong understanding of the Oracle database product. Of course we are not seeking to have the experience and understanding of Oracle's call center. Nor perform changes to production databases.

Are there any special hardware considerations you would have in reguards to..

Linux RAC installations?

Windows RAC/Failsafe Cluster installations?

Thank you again for all of your advice!