The threat of virtualization sprawl. That was a theme my colleagues heard last week at IDC's "Directions" conference in San Jose. And true to IDC's form, they backed up their predictions with some numbers. Here's an excerpt from one article.
Virtualization has often been seen as something of a magic bullet to this problem, promising to consolidate a number of low-utilization servers onto a single piece of hardware. But the average number of virtual machines per server is only five, Bailey noted, with that number going to eight by 2012. So much for the vision of consolidating dozens of servers onto one machine. More important, though, was that IDC found that just going from five virtual machines to eight means there will be 100 million new servers by 2012, and "all of them still need to be managed." That's a problem, she said, since the tools to do this are not keeping pace.
Our customers have referred to this issue as "islands," referring to the need for different management tools, interfaces, etc. to manage their heterogeneous environment. After all, customers and partners tell us, they're trying to manage services, no matter if the applications run on Windows or non-Windows, physical or virtualized.
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