### Module 7: Backup, Restore, and Disaster Recovery #### Lesson 1: Backup Strategies and Tools **Objective**: Equip participants with the knowledge to implement effective backup strategies using available tools, ensuring data integrity and availability. **Topics**: - **Importance of Backups**: Understanding the critical role of backups in data management and disaster recovery. - **Snapshot and Restore**: Detailed exploration of OpenSearch’s built-in snapshot and restore functionality, including how to create and manage snapshots of indices. - **Automating Backups**: How to automate backup processes using scripts, cron jobs, or cloud services (for managed OpenSearch services). - **Choosing Backup Storage**: Considerations for selecting backup storage locations and types, balancing cost, accessibility, and security (e.g., on-site vs. cloud storage, SSDs vs. HDDs). #### Lesson 2: Restore Procedures and Practices **Objective**: Guide participants through the process of restoring data from backups in OpenSearch, ensuring minimal downtime and data loss. **Topics**: - **Restoration Basics**: Overview of the restore process, including pre-requisites and impact on cluster performance. - **Partial vs. Complete Restores**: Understanding when and how to perform partial or complete restores, including strategies for minimizing impact on live operations. - **Validation and Testing**: Importance of validating backup data integrity and regularly testing restore procedures to ensure reliability. - **Restoration Best Practices**: Tips and tricks for efficient data restoration, including how to handle common issues that may arise during the restore process. #### Lesson 3: Disaster Recovery Planning **Objective**: Provide a framework for developing a comprehensive disaster recovery plan that includes OpenSearch data and operations. **Topics**: - **Disaster Recovery Principles**: Key concepts and objectives of disaster recovery planning, distinguishing from simple backup and restore strategies. - **Risk Assessment and Mitigation**: Identifying potential risks and threats to OpenSearch clusters and strategies for mitigation. - **Recovery Objectives**: Defining Recovery Time Objectives (RTO) and Recovery Point Objectives (RPO) tailored to organizational needs and capabilities. - **Disaster Recovery Plan Documentation**: Guidelines for documenting disaster recovery plans, including roles and responsibilities, procedures, and communication plans. - **Regular Review and Testing**: The importance of regularly reviewing and testing the disaster recovery plan to ensure its effectiveness and updating it based on changes in the operational environment or business requirements.