What's the difference between shelving vs shutting down an instance?
What is the difference between shelving an instance and shutting down?
From the blueprint (https://blueprints.launchpad.net/nova...) I don't see any difference:
"Users would like the ability to stop servers when they don't need them, but retain it in their list of servers and keep all associated data and resources with it."
An instance doesn't release its resource(vcpu, rom, etc.) unless it is terminated. What's the reason? Could somebody tell me?
Is it designed on some purpose or maybe for some other reason?