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Getting Started with oVirt 3.3 by Alexey Lesovsky

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High availability

High availability is the ability to restart virtual machines on other physical nodes in the event of a hardware failure or scheduled scenarios, which will be described in a moment. The configuration of high availability is accessible only for virtual machines that are allowed to perform automatic migration. It is recommended to configure high availability for virtual machines running mission-critical tasks. High availability ensures that the virtual machine will be restarted in the following scenarios:

  • When the virtualization host becomes nonoperational as a consequence of a hardware failure
  • When the virtualization host goes into maintenance mode for scheduled downtime
  • When the communication between the host and external storage ...

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