Amazon Web Services EC2 – Part 4: Transient Storage
March 8th, 2009
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Elastic Compute Cloud (EC2)
Transient Storage
The storage that comes with an AMI is called Transient Storage. That means that when the instance is stopped, the storage goes away. Any data or files saved when the instance was running is lost. This is by design.
To persist your data between sessions, you have two options. During most of the beta period, the Simple Storage Service (S3) was the only internal method of persisting data. S3 cannot be mounted as file system so it served as a backup service only.
Shortly before the beta period ended, Amazon added the Elastic Block Store (EBS).
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