What is Disaster Recovery on AWS?Amazon Web Services (AWS) lets you set up disaster recovery, both for on-premise services, and for workloads deployed in the Amazon cloud. Show
AWS offers four main disaster recovery (DR) strategies you can leverage to create backups and replicas that are available during disaster events. Each strategy has progressively higher cost and complexity, but lower recovery times:
Source: Amazon Each DR strategy on AWS offers different recovery time objectives (RTO) and recovery point objectives (RPO) designed at several ranges of costs and complexities. Generally, the more complex and highly available DR strategies come with higher costs and the less complex strategies that provide lower availability are more cost-effective. To ensure your DR strategy suits the needs of your organization and is properly working, you need to test it before the initial implementation, and again on a continuous basis. In this article, you will learn:
DR Strategies on AWS and their Recovery Point Objective and Recovery Time ObjectiveWhen planning your disaster recovery strategy on AWS, consider your recovery time objective (RTO) and recovery point objective (RPO), as illustrated in the image below:
Source:Amazon The following chart illustrates how the four disaster recovery strategies relate to RTO and RPO, adding the dimension of the cost of implementing each solution. The vertical red line shows the RTO defined by an organization—DR strategies to the right of this line are not acceptable.
Source: Amazon Learn more in our detailed guides to:
DR Strategies on AWS: Reference ArchitectureLet’s dive deeper into each of the disaster recovery strategies we reviewed above, and see how Amazon recommends deploying each one. These are reference architectures which you can use as a blueprint, or customize according to your specific workloads and DR requirements. Backup and RestoreFigure 1 – Source: Amazon The image above illustrates how several types of AWS data resources can be backed up. Here are several principles to keep in mind when using the backup and restore DR strategy on AWS:
Pilot LightFigure 2—Source: Amazon Business Continuity for Your Data with Cloudian
Warm StandbyFigure 3—Source: AmazonThe warm standby DR strategy keeps live data (just like the pilot light DR strategy), while also maintaining periodic backups. Here are several principles to keep in mind while using the warm standby strategy on AWS:
Multi-Site Active/ActiveFigure 4—Source: AmazonThe multi-site active/active strategy maintains two or more active Regions available to accept requests. Here are several principles to keep in mind when using the multi-site active/active strategy on AWS:
Disaster Recovery on AWS—Single vs. Multiple RegionsThere are three main redundancy options for a disaster recovery operation on AWS, each with progressively higher resilience: Multiple Availability Zones in the Same RegionSafeguards against a disaster that disrupts one Amazon data center. By replicating across multiple AZs in the same region, your workloads are resilient to failure of an entire data center due to an error, malicious attack or natural disaster. Each AZ is isolated from faults in the other AZs in the same region. If you have a regulatory requirement to store data in a specific geographic region (data residence), you can use the multi-AZ redundancy option, ensuring that all three AZs are within the mandated region. Multiple AZs with Backup to Another RegionA more resilient option is to back up data, configurations, and infrastructure definitions to another Amazon region. This is significantly simpler and cheaper than multi-region deployment, discussed below. You can opt to store data in Amazon S3 Standard storage for fast retrieval, or, if retrieval can wait between minutes and hours, consider Amazon S3 Glacier or Glacier Deep Archive to conserve costs. Multiple AWS RegionsThe most resilient option is to deploy workloads across multiple AWS regions, which safeguards against the risk of failure to multiple data centers, physically distant from each other, at the same time. In case of failure of an entire Amazon region, your workloads will still be safely running in another Amazon region. Protecting Data Effortlessly with CloudianIf you need to backup data to on-premises storage, Cloudian offers low-cost disk-based storage with capacity up to 1.5 Petabytes. You can also set up a Cloudian appliance in a remote site and save data directly to the remote site using our integrated data management tools. Alternatively, you can use a hybrid cloud setup. Backup data to a local Cloudian appliance, and configure it to replicate all data to the cloud. This allows you to access data locally for quick recovery, while keeping a copy of data on the cloud in case a disaster affects the on-premise data center.Learn more about Cloudian’s data protection solutions. Which of the Amazon EC2 feature is used to build failure resilient application?Global Infrastructure
By launching instances in separate Availability Zones, you can protect your applications from failure of a single location.
What is Amazon disaster recovery plan?AWS Elastic Disaster Recovery (DRS) is the recommended service for disaster recovery (DR) to AWS. Operated from the AWS Management Console, AWS Elastic Disaster Recovery helps you recover all of your applications and databases that run on supported Windows and Linux operating system versions.
Which among the following is used for disaster recovery in AWS?Disaster recovery services like AWS Elastic Disaster Recovery can move a company's computer processing and critical business operations to its own cloud services in the event of a disaster. Therefore, normal operations can continue from the provider's location, even if on-premises servers are down.
Which AWS services or features provide disaster recovery solution for Amazon EC2 instances?Backup with point-in-time recovery is available through the following services and resources:. Amazon Elastic Block Store (Amazon EBS) snapshot.. Amazon DynamoDB backup.. Amazon RDS snapshot.. Amazon Aurora DB snapshot.. Amazon EFS backup (when using AWS Backup). Amazon Redshift snapshot.. Amazon Neptune snapshot.. Amazon DocumentDB.. |