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Snapshots

DB Snapshots are user-initiated and enable you to back up your DB instance in a known state as frequently as you wish, and then restore to that specific state.
Cannot be used for point-in-time recovery.
Snapshots are stored on S3.
Snapshots remain on S3 until manually deleted.
Backups are taken within a defined window.
I/O is briefly suspended while backups initialize and may increase latency (applicable to single-AZ RDS).
DB snapshots that are performed manually will be stored even after the RDS instance is deleted.
Restored DBs will always be a new RDS instance with a new DNS endpoint.
Can restore up to the last 5 minutes.
Only default DB parameters and security groups are restored – you must manually associate all other DB parameters and SGs.
It is recommended to take a final snapshot before deleting an RDS instance.
Snapshots can be shared with other AWS accounts.
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