Sun Microsystems plans to launch <A HREF="http://news.zdnet.com/2100-9584_22-6092448.html?tag=nl.e622">the second phase of its x86 server line,</A> three higher-end models that show the company's commitment to and ambitions for the market. When the company unveiled its "Galaxy" line of Advanced Micro Devices' Opteron-based x86 servers in September, it began with mainstream models with sockets for two processors. The new systems, though, venture much farther afield.