Introduction to virtual machine technology and a detailed look at a range of potential high availability configurations using virtual machines.
The need to protect virtual machine (VM) environments against both planned and unplanned outages is increasing as the number of business critical applications deployed within VMs grows. This paper shows how the use of high availability (HA) clustering software can ensure application uptime and presents various configurations in which virtual machines can be used in HA clusters, with an emphasis on describing solutions that are enabled by VM technologies. The advantages and disadvantages of the various configurations are described, and some guidance is provided for system administrators who need to determine the best configurations for their own uses.
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