Billing for interrupted Spot Instances - Amazon Elastic Compute Cloud
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Billing for interrupted Spot Instances

When a Spot Instance is interrupted, you’re charged for instance and EBS volume usage as follows.

Instance usage

Who interrupts the Spot Instance Operating system Interrupted in the first hour Interrupted in any hour after the first hour

If you stop or terminate the Spot Instance

Windows and Linux (excluding RHEL and SUSE) Charged for the seconds used Charged for the seconds used
RHEL and SUSE Charged for the full hour even if you used a partial hour Charged for the full hours used, and charged a full hour for the interrupted partial hour

If the Amazon EC2 interrupts the Spot Instance

Windows and Linux (excluding RHEL and SUSE) No charge Charged for the seconds used
RHEL and SUSE No charge

Charged for the full hours used, but no charge for the interrupted partial hour

EBS volume usage

While an interrupted Spot Instance is stopped, you are charged only for the EBS volumes, which are preserved.

With EC2 Fleet and Spot Fleet, if you have many stopped instances, you can exceed the limit on the number of EBS volumes for your account.