Thursday 22 December 2016

Virtualization Oversubscription - What’s so scary? (17 of 20) Expandable Reservation

When a VM starts the Reservation set for that VM is taken from the Reservation available within the Resource Pool.  The total reservations of the child VMs may not be more than the Reservation for the Resource Pool.




However if Expandable Reservation is turned on then a Resource Pool may satisfy its Reservation requirements by using the Reservation of another Resource Pool.  This however may stop the 2nd Resource Pool from starting VMs as it itself cannot satisfy the Reservation requirements of the VM which wants to start.


When a VM starts the Reservation set for that VM is taken from the Reservation available within the Resource Pool.  The total reservations of the child VMs may not be more than the Reservation for the Resource Pool.

I'm off on vacation now and will be back in the New Year to deal with ' What's the worst that can happen?'
Wishing you all a Happy Holidays and see you in 2017!
Phil Bell
Consultant


No comments:

Post a Comment