VMware can't pretend it has got the wherewithal to face down a direct attack by Microsoft and survive. So it has done the smartest move available -- cooperation. Earlier this week Microsoft said it was revamping its licensing fees for products on virtualized servers but would not support products running on VMware. That, coupled with VMware's other missteps, obviously put the pressure on VMware to come to Microsoft's table. But why shouldn't VMware join the other hypervisors and get its hypervisor certified by Microsoft as compatible with Microsoft server products? Leaving itself out of that party only gives users even more reason to check out Hyper-V or Citrix Xen. They have plenty of reasons already given the price of the younger hypervisors.

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