From the course: VMware vSphere: Administer and Manage Resources

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Expandable reservations

Expandable reservations

- [Voiceover] In this video I'll explain how resource pool reservations are effected by configuring expandable reservations. Resource pools can contain multiple objects such as virtual machines and child resource pools. And we can configure shares, limits, and reservations on a resource pool. Whenever we're dealing with reservations we have to take admission control into consideration. Admission control prevents virtual machines from booting if their reservations cannot be satisfied. It also prevents us from configuring reservations on a resource pool if they cannot be satisfied. At times we may need to create reservations on objects within a resource pool. These reservations must be satisfied by the parent resource pool. The reservations on the child objects might actually exceed what the parent pool can provide. This can result in admission control errors. And we may not be able to boot up virtual machines with reservations inside this pool. We can relax these admission control…

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