It appears that Sun and IBM have struck a deal to help Solaris adoption by supporting it on many IBM servers. This could really help Sun and IBM both, and from someone who is deeply entrenched in Solaris (ableit on the SPARC platform), I think this is great news. As much as I love Linux, nothing I have seen can scale as large or run as well as Solaris. Linux is great, and works for many things, but when you need big systems, Solaris and SPARC work wonderfully. Now, one note is that if it fits the situation, Linux clusters have proven very powerful. Check out the article.