Storage allocation

Adding storage

Adding storage to an RDS instance is a simple procedure that doesn't require a maintenance window. Ensure the new size is at least a 10% increment over the current size for the change to apply.

Recovering storage

Recovering free space requires creating a new instance and migrating the database's content using the engine's native tooling. Restoring from a snapshot isn't enough -- you can only restore to a new instance with the same storage allocation or larger.