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Looking at our website the wording for the EBS free tier (which you also have in your question) is "any combination of General Purpose (SSD) or Magnetic". This means you could have a single 30 GB volume; or fifteen 2 GB volumes - completely up to you.
Note that this is the volume size - not how much disk space the operating system of the instance has allocated within the volume. If you have a 30 GB volume and are only using 10 GB of it; that is a 30 GB volume to EBS, not a 10 GB usage. EBS doesn't track the usage of each block; only the total amount of blocks allocated to the volume.
It doesn't matter whether the EC2 instance is stopped or not - it's the EBS volume size that is counted. Note that an operating system might delete some temporary files; or write additional logs to disk as it is shutting down - but that is changing the number of blocks allocated (or free) within the volume. It doesn't change the volume size as EBS sees it.
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- OFICIAL DE AWSActualizada hace 2 años
Brettski-AWS, your explanation makes perfect sense!!! Thank you for a great response.