Harness the Power of Virtualization for Server Consolidation

Short Description
The average server workload in an enterprise environment ranges from five to 40 percent, leaving at least 60 percent of the available capacity unused (based on October 2005 Novell? customer interviews). Still, the majority of today’s data centers run a single application on a single server, creating server sprawl and resulting in more money spent on hardware and the resources required to manage it. To significantly reduce these costs, data centers need to take better advantage of the high processing power of today’s server CPUs by employing server virtualization solutions that reduce sprawl and maximize workloads.

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Content
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The Value of Virtualization
You want to enjoy the benefits of server consolidation by moving all of your existing server applications to a single server with a new, high-performance processor. However, you’re afraid that if one crashes, it will bring all the other applications down as well. Or maybe your concerns are security-related. You want to keep critical applications isolated to protect them from being infected with malware or viruses from the server’s other applications. Or perhaps your legacy applications require older—or a variety of— operating systems, preventing you from running them on the latest hardware or in the same server environment.
Virtualization addresses all of these issues, facilitating data-center server consolidation. In a virtualized environment, a single server hosts multiple virtual machines. In essence, each of these virtual machines “thinks” it’ is running on its own physical hardware.
In reality, it’s running on a piece of software known as the hypervisor, which presents each machine with a virtualized view of its own native hardware and operating system. The hypervisor lies on top of the physical layer of the server. It runs at the most privileged hardware-protection ring and has the responsibility to allocate resources for each virtual machine.
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