Sunday, April 4, 2010

VMware Shares & Reservations

Resources Pools & Shares:
  • Resource Pools are hierarchical.
  • Resource Pools are both providers and consumers of resources. Child consumes resources from Parent pools.
  • Reservation: Tells ESX to power on a virtual machine only if there are enough unreserved resources. As a best practice, leave at least 10% resources unreserved.
  • Shares are used to set Guaranteed Reservation for VMs.
  • Shares are assigned values as High (4), Normal (2) and Low (1). An example of how to use these values is shown below:

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