One of the hottest features in the data center nowadays is the possibility of working with virtual-ization. Virtualization allows you to run software instances of an operating system independent from the hardware. That is, different operating systems and several installations of the same operating system can run on one hardware platform at the same time. If you use the right kind of virtualization, it is even possible to migrate virtual machines to other boxes without any significant downtime. On SUSE Linux Enterprise Server, you get virtualization for free with the Xen open source hypervisor.
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