Amazon EC2 FAQs: "The data stored on a local instance store will persist only as long as that instance is alive. However, data that is stored on an Amazon EBS volume will persist independently of the life of the instance. If you are using an Amazon EBS volume as a root partition, then you have set the Delete On Terminate flag to "N" for your Amazon EBS volume to persist outside the life of the instance.
Therefore, we recommend that you should use the local instance store for temporary data and if you want to increase your data durability we recommend using Amazon EBS volumes or backing up the data to Amazon S3.
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