ability to set a "reserve RAM" value for an entire hypervisor zone. This is basically so that we can make it possible to guarantee that failover will be successful in the event of a hypervisor going down.
To give you an example, we currently have 3 hypervisor zones each consisting of 4 hypervisors a piece. Right now, we need to manually ensure that we always leave enough room available for a successful failover to occur. We would like to make it simply impossible to allocate too many resources by reserving some.
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