Yeah, we are an IBM house, so sure we are going to say that IBM is pure magic but the following link shows a really good independent look into DB2 Purescale vs Oracle Exadata. The really interesting summary is at 14:45 where Bloor Research said they were expecting a list of positives and negatives for both systems but instead only found one positive on the Exadata side and lots on IBM.
http://www.youtube.com/watch?feature=player_embedded&v=5wCLvsMw4zk

By 
William,
Thanks for this post. The video is very informative. If you’ll allow I’d like to refer your readers to another Exadata related video with a critical analysis of the solution’s capabilities. All technology has limitations so it’s best to know what they are.
https://kevinclosson.wordpress.com/2012/04/16/critical-analysis-meets-exadata/
By Kevin Closson at 16:45 on Apr 18, 2012