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5.7. 高可用性虚拟机资源保留
高可用性(HA)虚拟机资源保留策略可以使 Red Hat Virtualization Manager 监控集群资源的使用情况,从而可以保证在需要的时候为高可以性虚拟机提供有效的资源。Manager 可以把虚拟机标识为“高可用性”,在需要的时候,这些虚拟机可以在其它主机上重启。在高可用性虚拟机资源保留功能被启用时,Manager 会为高可用性虚拟机预留一些资源,当因为主机故障需要进行高可用虚拟机迁移时,可以保证集群中有足够的资源来完成迁移操作。

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