Reliability And Availability Of Data Storage Systems

Redundancy and Replication

• Eliminates single points of failure.
• Data replication across multiple Availability Zones or multi region deployments for cloud databases.
• RAID configurations and redundant hardware for on-premises systems.

Backup and Recovery Strategies

• Defining clear RTO and RPO targets
• Automated backups and automated recovery procedures
• Regular testing restore procedures to ensure their efficacy

Monitoring and Alerting

• Monitor key metrics
  • IOPS
  • Latency
  • Storage
  • Conencctions
  • Error Rates
  • CPU
  • Memory
• Setting up alerts for anomalies and threshold breaches allows for proactive intervention before na incident impacts users

Performance Optimization

• Optimize queries
• Proper schema design
• Correct type of storage for the job

Security

• Encrypt at rest and in transit.
• RBAC with Least Privilege Principle