RDS backup and snapshots in AWS - Step-by-Step Execution

Process Flow - RDS backup and snapshots

Create RDS Instance

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Enable Automated Backups

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RDS Automatically Takes Daily Snapshots

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User Creates Manual Snapshot (Optional)

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Snapshots Stored in S3 Managed by AWS

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Restore from Snapshot When Needed

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New RDS Instance Created from Snapshot

This flow shows how RDS instances have automated backups and optional manual snapshots, which are stored safely and can be used to restore databases.

Execution Sample

AWS

aws rds create-db-instance --db-instance-identifier mydb
aws rds modify-db-instance --db-instance-identifier mydb --backup-retention-period 7
aws rds create-db-snapshot --db-instance-identifier mydb --db-snapshot-identifier mydb-snap1
aws rds restore-db-instance-from-db-snapshot --db-instance-identifier mydb-restored --db-snapshot-identifier mydb-snap1

This sequence creates an RDS instance, enables backups, creates a manual snapshot, and restores a new instance from that snapshot.

Process Table

Step	Action	AWS Service Response	Resulting State
1	Create RDS instance 'mydb'	DB instance 'mydb' created	RDS instance 'mydb' is running without backups
2	Enable automated backups with 7 days retention	Backup retention set to 7 days	Automated daily backups enabled for 'mydb'
3	AWS takes daily automated snapshot	Snapshot 'mydb-automated-YYYYMMDD' created	Daily snapshot stored in AWS managed storage
4	User creates manual snapshot 'mydb-snap1'	Snapshot 'mydb-snap1' created	Manual snapshot stored and available
5	Restore new instance 'mydb-restored' from 'mydb-snap1'	DB instance 'mydb-restored' created from snapshot	New RDS instance running with data from snapshot
6	End	No further actions	Ready for use or further backups

💡 Process ends after restoring new instance from snapshot

Status Tracker

Resource	Initial State	After Step 1	After Step 2	After Step 4	After Step 5	Final State
RDS Instance 'mydb'	Not created	Running without backups	Running with automated backups	Running with automated backups	Running with automated backups	Running with automated backups
Snapshots	None	None	Automated daily snapshots start	Manual snapshot 'mydb-snap1' added	Manual snapshot 'mydb-snap1' present	Manual and automated snapshots present
RDS Instance 'mydb-restored'	Not created	Not created	Not created	Not created	Running restored from 'mydb-snap1'	Running restored from 'mydb-snap1'

Key Moments - 3 Insights

Why do automated backups start only after enabling backup retention?

Automated backups require a retention period greater than zero to be enabled, as shown in step 2 of the execution_table where backups start only after setting retention.

What is the difference between automated backups and manual snapshots?

Automated backups happen daily and are managed by AWS automatically (step 3), while manual snapshots are created by the user on demand and kept until deleted (step 4).

Can you restore an RDS instance from an automated backup directly?

You restore from snapshots, which include automated backups converted to snapshots by AWS. Step 5 shows restoring from a manual snapshot, but automated snapshots can also be used similarly.

Visual Quiz - 3 Questions

Look at the execution_table, what is the state of 'mydb' after step 2?

A Running without backups

B Running with automated backups enabled

C Not created yet

D Restored from snapshot

💡 Hint

Check the 'Resulting State' column for step 2 in the execution_table

At which step does the manual snapshot 'mydb-snap1' get created?

A Step 1

B Step 3

C Step 4

D Step 5

💡 Hint

Look for the action mentioning manual snapshot creation in the execution_table

If backup retention was set to 0, what would change in the execution flow?

A Automated backups would not start

B Manual snapshots would be disabled

C Restoring from snapshots would fail

D RDS instance would not be created

💡 Hint

Refer to key_moments about enabling automated backups and retention period

Concept Snapshot

RDS backups include automated daily snapshots and manual snapshots.
Enable automated backups by setting backup retention period > 0.
Manual snapshots are user-triggered and kept until deleted.
Snapshots are stored safely by AWS and used to restore instances.
Restoring creates a new RDS instance from a snapshot.

Full Transcript

This visual execution shows how AWS RDS handles backups and snapshots. First, you create an RDS instance. Then you enable automated backups by setting a backup retention period. AWS takes daily automated snapshots stored safely. Users can create manual snapshots anytime. These snapshots can be used to restore a new RDS instance with the saved data. The execution table traces each step and state change. Key moments clarify common confusions about backup enabling and snapshot types. The quiz tests understanding of states and actions in the process.