Always-on goals put virtualization in the spotlight. If programs could execute in an environment separated from the underlying hardware resources, when hardware failed, the processes could move to another system. With virtualization, a number of Operating Systems (OSs) can run on one hardw... Moreare platform, helping to lower data center expenses. Switching to a customer's operating system to troubleshoot problems is also enabled by virtualization, which makes multi-tasking possible. Multiple virtualized systems can be run by a single-core processor, or a set number of cores within a multicore processor can be dedicated to each virtualized system. Virtualization's appeal to the safety- and security-minded is apparent: It's possible to isolate a virtualized system in order to protect it.
