Volumes and Snapshots

▶ What are voluems?

- Volumes exists on EBS.

- Think of it as a "Virtual Hard Disk".

- Volumes are simply virtual hard disks. You need a minimum of 1 volume per EC2 instance.
  This is called the root device volume.

▶ What are Snapshots?

① Snaptshots exists on S3.

   - Think of snaspshots as a photograph of the virtual disk/voluem.

② Snapshots are point in time.

   - When you take a snapshot, it is a point-in-time copy of a volume.

③ Snapshots are incremental

   - This means only the data that has been changed since your last snapshot are move to S3.

   - This saves dramatically on space and the time it takes to take a snapshot.