HP king of the clusters?

HP OpenVMS came out the winner in this white paper analysis because the other two clusters experienced more downtime.

http://itpapers.techrepublic.com/abstract.aspx?kw=servers&docid=89599

[b]The results may raise some questions. 😉 Have you experienced disproportional downtime with IBM AIX, and Sun Solaris cluster servers?[/b]