- Elastic block storage.
- Suitable for block based storage, like running an operating system, database, webserver etc..
- Encryption can be enabled on EBS volumes while creating the volume.
- You cannot disable or enable encryption on the fly. It will need either a data copy or snapshots.
- To increase IOPS, add multiple disks and create Raid arrays.
- You cannot attached EBS volumes to multiple instances. You can attach it to only one instance at a time.