Backup & Restore on Amazon Redshift

5 minutes 5 Questions

Amazon Redshift provides automated backup and restore capabilities to protect and recover your data. By default, Amazon Redshift takes regular snapshots of your data and stores them in Amazon S3 for 1 day, which can be increased up to 35 days as per your backup retention policy. The snapshots can be automated or taken manually, and consist of incremental and full backups. Amazon Redshift also supports cross-region snapshots, allowing you to optimize data transfer speeds and data storage costs. To recover data, you can either restore the entire Amazon Redshift cluster or a specific table, depending on your needs. Restoration of your backups can also be used to create a new Amazon Redshift cluster in a different AWS region, enabling you to migrate your data across regions seamlessly.

Backup & Restore on Amazon Redshift Guide

What is Backup and Restore on Amazon Redshift?
Backup and Restore on Amazon Redshift is a valuable feature that allows users to create, store, and restore backups of their Redshift databases. It is useful in situations where data loss occurs, a database becomes corrupted, or for migrating data.

Why is it important?
The Backup and Restore function is essential as it provides a safety net against data loss or corruption. Having a backup plan in place also ensures business continuity in the face of unforeseen events.

How does it work?
Amazon Redshift automatically backups users' data to Amazon S3. Users can also manually create snapshots at any point in time. These backups can later be used to restore a database. Redshift retains backups for a user-defined period, after which it is deleted unless specified otherwise.

Exam Tips: Answering Questions on Backup & Restore on Amazon Redshift
1. Understanding the fundamentals: Understand how Redshift takes backups, where it is stored, and how to restore data from these backups.
2. Scenario-based questions: In scenario-based questions, understand which backup strategy would be the most suitable solution.
3. Reference the documentation: AWS concepts and procedures are well documented. Referring to the documentation can often provide the answers to exam questions and offers depth understanding.
4. Practice with hands-on labs: Practical experience provides a deeper understanding and can help answer questions more confidently.

Test mode:

Exam (Timed)

Practice (With explanations)

Start practice test

Question 1

An ETL operation has caused data corruption in an Amazon Redshift cluster. The corruption was identified 3 hours after the operation began. How can you restore the data in the cluster to the state it was in at the start of the ETL operation?

Restore the cluster from a snapshot taken prior to the ETL operation and specify the desired time for the new cluster Undo the ETL operation Use AWS Glue to clean the corrupted data Run a repair on the corrupted cluster

Correct Answer: Restore the cluster from a snapshot taken prior to the ETL operation and specify the desired time for the new cluster

In this scenario, you should restore the cluster from a snapshot taken prior to the ETL operation and specify the desired time for the new cluster. This will create a new cluster with data at the state it was in at the specified time. Other options either don't work for Redshift or are not feasible in this situation.

Question 2

A company is currently storing its sensitive data in an Amazon Redshift cluster. The company wants to ensure that all data is encrypted, both at rest and in transit. What should you recommend?

Use AWS KMS for data encryption Enable only SSL encryption Enable cluster encryption and SSL encryption Enable only cluster encryption

Correct Answer: Enable cluster encryption and SSL encryption

To ensure that all data is encrypted in a Redshift cluster, both at rest and in transit, you should enable cluster encryption for data at rest and SSL encryption for data in transit. Other options are either not applicable or do not provide the required encryption mechanism.

Question 3

A production Amazon Redshift cluster has business-critical data that needs to be backed up with high durability. Which of the following settings should be configured?

Enable cross-region snapshot copy only Enable automated snapshots and cross-region snapshot copy Enable manual snapshot backups Enable automated snapshots only

Correct Answer: Enable automated snapshots and cross-region snapshot copy

To achieve high durability for your critical data, you should enable automated snapshots and cross-region snapshot copy. Automated snapshots ensure regular backups of your data, and cross-region snapshot copy allows you to store the backup in a different region increasing the durability of the backup. Other options are either partially effective or are not sufficient for a high durability requirement.

Go Premium

AWS Certified Solutions Architect - Associate Preparation Package (2024)

More Backup & Restore on Amazon Redshift questions

4 questions (total)