A decade ago, Intel was shipping the Pentium II processor and Linux was a fringe operating system used by a few Internet fanatics. No one at the time would ever have thought the two in combination would be a match for Sun's SPARC/Solaris combination, HP's PA-RISC/HP-UX, IBM's POWER/AIX or SGI's MIPS/IRIX.
Even though there has been a big shift in the marketplace, high-end Unix has not curled up and died in spite of the advent of Windows and Linux Server. IDC puts the market at around $19 billio