Disadvantages of Virtualization and VHDs (Upgrade To Windows 7)

There are, however, some disadvantages to virtualization:
• Some apps require a dedicated PC—Some applications still require dedicated physical resources. Take, for example, a rendering machine for a small graphics shop. Rendering is a process where processing time is highly dependent on the amount of available RAM and CPU. So although you can create multiple virtual rendering servers, they’re still working from the same pool of available resources, meaning that there’s no net benefit—and in fact, virtual-ization would be a bad idea because each virtual server consumes some of those resources as well, leaving fewer resources for the actual work at hand.
• Licensing fees—Watch out for licensing fees. IT professionals call this “license creep.” If you let the number of virtual servers get out of hand, you may find that you’re paying a lot more money than you should in licensing fees. So pay attention to how your software licenses are structured.
• Better for server processes than desktops—Be aware that virtualization is really most useful when dealing with server processes;it can be less useful for dedicated desktops.

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