BusinessWeek recently posted an article on virtualization: Multiply & Conquer
Software that helps one server do the work of many. The article leads with a Virtual Iron customer story:

When ISB community bank recently moved its main branch into a new building, the time seemed right for a technology upgrade, too. The 87-employee Ixonia (Wis.) bank wanted to replace the three servers it used to host e-mail, database, and mobile messaging software. But with servers running about $6,000 apiece, it was reluctant to do so.

Instead, the bank spent about $1,000 for a program from Virtual Iron Software that essentially turned a single machine into several mini-servers, allowing it to consolidate the three tasks. And, says Gregg Hughes, information technology specialist for the $3.5 million bank, it can add more software in the future without buying additional hardware. "It will give us a lot more flexibility to expand," says Hughes. "Lots more options."

Read the full article here.