12/2/2023 0 Comments Aws backup and disaster recoveryThis is to ensure high availability of the service and application.Īn ElastiCache for Redis (cluster mode disabled) cluster with multiple nodes has three types of endpoints: the primary endpoint, the reader endpoint and the node endpoints. A replacement read replica is then created and provisioned in the same AZ as the failed primary. If the primary node fails, it will promote the read replica with the least replication lag to primary. Amazon ElastiCacheĪmazon ElastiCache continually monitors the state of the primary node. This ensures that the cluster can always run your workload. Join the group to a cluster, and the group will automatically replace any terminated or failed nodes if an AZ fails. Instead of creating individual Amazon Elastic Compute Cloud (Amazon EC2) instances, create worker nodes using an Amazon EC2 Auto Scaling group. This means that if your infrastructure or AZ fails, it will automatically scale control plane nodes based on load, automatically detect and replace unhealthy control plane instances, and restart them across the AZs within the Region as needed. Amazon EKS control planeĪmazon Elastic Kubernetes Service (Amazon EKS) runs the Kubernetes management infrastructure across multiple AZs to eliminate a single point of failure. Single Region/multi-AZ with secondary Region for backups 1. We’ll show you which AWS services it uses and how they work to maintain the single Region/multi-AZ strategy.įigure 1. This example architecture refers to an application that processes payment transactions that has been modernized with AWS managed services. The following sections list the components of the example application presented in Figure 1, which illustrates a multi-AZ environment with a secondary Region that is strictly utilized for backups. Implementing the single Region/multi-AZ strategy This strategy replicates workloads across multiple AZs and continuously backs up your data to another Region with point-in-time recovery, so your application is safe even if all AZs within your source Region fail. This will minimize maintenance and operational overhead, create fault-tolerant systems, ensure high availability, and protect your data with robust backup/recovery processes. The strategy outlined in this blog post addresses how to integrate AWS managed services into a single-Region DR strategy. In Part I, we’ll discuss the single AWS Region/multi-Availability Zone (AZ) DR strategy. Objects with S3 Object Lock retain WORM protection, even if they are moved to different storage classes with an S3 Lifecycle policy, such as into S3 Glacier or S3 Glacier Deep Archive.This 3-part blog series discusses disaster recovery (DR) strategies that you can implement to ensure your data is safe and that your workload stays available during a disaster. You can migrate workloads from existing WORM systems into Amazon S3, and configure S3 Object Lock at the object- and bucket-levels to prevent object version deletions prior to a pre-defined Retain Until Date or Legal Hold Date. This S3 management feature blocks object version deletion during a customer-defined retention period so that you can enforce retention policies as an added layer of data protection or to meet compliance obligations. You can also enforce write-once-read-many (WORM) policies with S3 Object Lock. To assist these customers, AWS offers two Amazon S3 storage classes for cost-effective archives - S3 Glacier and S3 Glacier Deep Archive. Many organizations, particularly those in highly-regulated industries such as financial services, healthcare, legal services, and public sector, must retain archives for extended durations to meet regulatory compliance requirements.
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