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More OSes gain hypervisors, but most users choose OS-independent approach

(Bridget Botelho, News Writer) With the rise of KVM and Hyper-V, the move is clearly afoot to build hypervisors into operating systems, but most users say the OS-independent approach to virtualization is here to stay.

Non-OS based virtualization from VMware can be expensive and resource-intensive because it requires tracking and licensing for virtual machines (VMs) running on disparate OSes. But it also provides much-needed features.

Advantages of the OS-based approach are exemplified by a Hackensack, N.J.-based virtualization user who hates the hassle of assigning VMware virtual machines (VMs) to OS licenses and struggles with tracking and managing VMs running outside the core OS. Some observers say these virtualization management burdens could cause a VMware defection to Red Hat KVM and Microsoft's Hyper-V, which can be built into and managed directly through an OS.

"Why spend money on [virtualization software], third-party tools, add-ons, and support contracts for a virtualization solution from a totally separate vendor when your OS - Windows or Linux - already has the same features built right into them," he wrote on a popular IT community board.

Non-OS hypervisor plusses and minuses

Microsoft's Hyper-V operates on bare metal and is typically used with Windows Server 2008, although Microsoft also supports SUSE Linux Enterprise Server 10 as guest OSes. KVM, or the Kernel-based Virtual Machine, is a Linux-based hypervisor for hosting Red Hat Enterprise Linux (RHEL), Windows, and Sun Microsystems' Solaris OS.

This user also complained about the licenses required by each OS running VMware VMs. "You have a separate financial transaction to worry about."

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