As virtualization stretches deeper into the enterprise to include mission-critical and resource-intensive applications, IT executives are learning that double-digit physical-to-virtual server ratios are things of the past.
Virtualization vendors may still be touting the potential of putting 20, 50 or even 100 virtual machines (VM) on a single physical machine. But IT managers and industry experts say those ratios are dangerous in production environments and can cause performance problems or, worse, outages.
"In test and development environments, companies could put upwards of 50 virtual machines on a single physical host. But when it comes to mission-critical and resource-intensive applications, that number tends to plummet to less than 15," says Andi Mann, vice president of research at Enterprise Management Associates Inc. in Boulder, Colo.
To learn more and to read the entire article at its source, please refer to the following page, Planning for virtualization? Beware of server overload- NetworkWorld.com
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