Do i get charged for Reserved Capacity if the machine is off?
I understand that an EC2 instance is only charged if it is on. But does it change if I use "Reserved Capacity"? If I run an EC2 On Demand instance with Reserved Capacity for a few hours a day only, do I get charged any more than the actual instance cost for those hours the machine is on?
Yes. Capacity Reservation is charged on-demand while provisioning is active.
Billing starts as soon as the Capacity Reservation is provisioned in your account, and it continues while the Capacity Reservation remains provisioned in your account.
Even if the machine is off?
Yes. You will also be charged if the machine is down.
However, you will still enjoy the benefits of making sure it launches the next time you launch it.
Ideal for use cases where you cannot avoid the outage but want to start it reliably.
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