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Migrate io1 to io2 Block Express storage for Amazon RDS workloads using blue/green deployments

Database Blog

This article discusses migrating Amazon RDS database storage from io1 to io2 Block Express storage using blue/green deployments, highlighting key performance and migration benefits.

  • io2 Block Express offers improved storage performance with:
    • 99.999% durability (vs. io1's 99.9%)
    • Up to 1,000 IOPS per GiB
    • Sub-millisecond latency
    • Same cost as io1 storage
  • Two migration strategies are presented:
  • Blue/green deployment (recommended for strict change management)
  • In-place storage type change (simpler approach)
  • Key best practices include:
  • Performance testing
  • Compatibility verification
  • Comprehensive monitoring
  • Developing a rollback plan

    • The article emphasizes thorough testing and validation to ensure a smooth migration with minimal risk to database operations.

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