Paul Thurrott On Microsoft Virtualization
Thursday, 27 July 2006 by Michel Roth
Paul Thurrott has written an article on WindowsITpro.com in which he discusses Microsoft's virtualization spectrum: Just a few years ago, when Microsoft released its first version of Virtual Server, the company knew its product was somewhat lacking compared with VMware products of the day such as VMware GSX Server and VMware ESX Server. So the company positioned Virtual Server to accomplish essentially a single, if strategic, goal: Virtual Server was designed to allow enterprises to virtualize legacy Windows NT servers with legacy workloads (Microsoft Exchange Server 5.5, for example), therefore reducing the number of physical servers administrators would need to manage and simplifying management.

As a long-time proponent of virtualization, I felt at the time that legacy server consolidation was a valid use of the technology, but only one of the many ways that corporations might want to use it. Meanwhile, VMware's more full-featured virtualization servers and management tools opened up virtualization to a much wider range of uses. And just as important, VMware's server could run on Linux and support Linux guest environments. Put simply: Virtual Server was seen as inferior.

Today, VMware and Microsoft are on a more level playing field because of various moves that have improved both the core Virtual Server product and its chances of competing with VMware. Virtual Server 2005 R2, the latest version, now natively supports several enterprise-oriented Linux distributions, although of course the server itself still runs only on Windows Server. Licensing of Microsoft's Virtual Hard Drive (VHD) virtual disk format has been more successful than expected, and many Microsoft and third-party management tools can now natively understand virtual disk-based system installs and work with them in unique ways. And, finally, Microsoft is addressing the fact that Virtual Server customers will want to use the server for far more than just consolidation.

Read the entire article here.

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