Difficulty: Easy
Description
We identified Amazon OpenSearch domains in your account still running on x86 instance types (r5, m5, c5, i3, etc.). Migrating to Graviton-based equivalents (r6g, m6g, c6g) provides the same performance at a lower cost with no changes required to your data or queries.
Selection Criteria
OpenSearch domain uses an x86 instance type (r5, m5, c5, i3, etc.).
A Graviton equivalent exists in the same instance family.
Expected annualized savings exceed $10.
Expected Saving
Graviton-based OpenSearch instances (r6g, m6g) are up to 38% cheaper than their x86 equivalents (r5, m5) while delivering better performance per dollar.
Operational Impact
Downtime: The instance type change is applied via a blue/green deployment. The domain remains available but performance may be temporarily reduced during the transition (30 minutes to several hours depending on cluster size).
Recovery: If issues arise after migration, the domain can be migrated back to an x86 instance type via another blue/green deployment.
⚠️ Warning — Blue/green deployment: During the deployment, other cluster configuration changes are blocked until the process completes.