Stories by: Neil McAllister

If you had any doubts about Sun Microsystems' commitment to open source, it's time to set them aside. Sun put its money where its mouth is Wednesday, with the announcement that it would buy open source database vendor MySQL for a whopping US$1 billion. If the price tag set tongues wagging, however, it was no more tantalizing than the question that immediately sprung to the minds of IT managers everywhere: Now that Sun owns MySQL, what on earth does it plan to do with it?

Are you geek enough for Linux? Though it first earned a reputation as a platform for hobbyists and hackers, Linux has come a long way since Linus Torvalds cobbled together the first kernel as a student project. A modern Linux desktop is a sophisticated, user-friendly GUI environment, with features and applications to rival any proprietary OS. In fact, when compared to the mainstream alternatives, there are lots of compelling reasons to give Linux a try:

If you aren't happy with the performance of your software, the solution should be simple: Switch to different software. In practice, however, jumping ship is seldom that easy, and vendor lock-in is a reality with which most IT departments are far too familiar.

Even as its adoption in the enterprise has exploded, open source software remains dogged by questions regarding its legal status. Most recently, Microsoft has claimed that open source violates no fewer than 235 software patents.

In my previous column, I touched on the issue of what constitutes an open-source vendor. Ask Andy Astor that question, and his answer is a shrug. "Honestly," he says, "who cares?" To Astor, there are really two broad categories of companies with respect to their relationship to open-source code. Some are users. Others are joiners.

Nat Torkington stirred up some controversy when he asked, "Is 'Open Source' Now Completely Meaningless?" He has a good point, however. With so many companies claiming to be "open source" -- despite seemingly disparate business models and licensing schemes -- it's getting hard to tell what is legitimate open source and what isn't. The mere fact that so many voices have begun to weigh in on the issue is proof of how murky these waters have become.

I came away from InfoWorld's Virtualization Executive Forum this week with two conclusions. First, server virtualization is definitely a big deal. This time last year, customers and ISVs still seemed to be struggling to come to terms with this new approach to deploying and managing servers; today it's full speed ahead. And, second, nowhere is virtualization hotter than in the Linux market.

Customers are getting annoyed. They spent good money on the latest and greatest PC peripherals, only to find out that the hardware is only partially supported on their operating system of choice. Without the kernel drivers necessary to power them, some of the best features of the new toys are going unused.

In today's complex IT environments, server virtualization simply makes sense. Redundant server hardware can rapidly fill enterprise datacenters to capacity; each new purchase drives up power and cooling costs even as it saps the bottom line. Dividing physical servers into virtual servers is one way to restore sanity and keep IT expenditures under control.

At a recent Sun Microsystems press event, Sun execs talked up plans to market the company's Solaris Unix OS to startups and small-to-midsize businesses. "Open source is what [customers] want to go after," said Peder Ulander, Sun's vice president of software marketing. "It's not so much Linux. Linux just happens to embody open source."

Cleversafe is one of the few enterprise storage technologies that began life as an open source project, but that's not the only thing that makes the company unusual. The organizations interested in Cleversafe's open source storage software aren't dealing with mere gigabytes of data -- they're storing terabytes, petabytes, or even more. According to CEO Chris Gladwin, Cleversafe's long-term goal is nothing less than to store all of the world's data. And with an aim that lofty, he says, open source is the only way to go.