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How Virtualization Led Microsoft to Support Linux
Carl Bialik from WSJ writes "Why did Microsoft make the surprise announcement that it would support business customers who also use Linux? Because of the increasing importance of virtualization, Lee Gomes writes in the Wall Street Journal. 'Once businesses start using virtualization to cut back on the number of machines they need to buy, "a light bulb goes on over their head," says Tony Iams, who follows the field for Ideas International, an analyst group,' Gomes writes. 'Other uses become apparent, such as backing up data or easily adding processor power to a particular application as the need arises.' VMware pioneered the market, but now Microsoft is 'expected to offer sophisticated virtualization products in the next year or two,' Gomes writes. 'The company currently has a fairly rudimentary product, which was involved in its big Linux announcement earlier this month.'"
And wake me up when MS also natively supports Ext3, ReiserFS, etcetera on their own OSes too
Why? With virtualization, the host OS has no need to understand the guest OS's filesystem any more than it needs to know the guest's binary format. You just point it at a partition or an FS image file, and let it do its thing.
Some of us actually consider that one of the most useful features of running a virtual machine - Absolutely perfect 100% backups involve nothing more complicated than shutting down the guest OS and copying its image file. You can even perfectly backup a running OS that way, you just need to pause it and do a state dump; Then when you restart it, you resume right where you left off.