- temporary block-level storage (persists only during the lifetime of the associated EC2 instance)
- 160GB to 1.7TB
- used for scratch volume, RAM disk, continually changing data, buffers, caches, data replicated across a fleet of instances (load balanced pool of web servers)
- very fast for sequential access
- data persists across instance reboots, but NOT when EC2 terminates or when going through a failure/restart cycle
- no charge
- fixed in size
Anti-Patterns
Persistent storage - use EBS or S3
Database storage - use EBS
Shared Storage - use EBS or S3
Snapshots - EBS
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