| Database | IO-Optimized Equivalent? | Notes | |----------|--------------------------|-------| | MongoDB Atlas | M-series with provisioned IOPS | Atlas charges separate I/O unless using higher tiers. | | Amazon RDS (Aurora) | Aurora I/O-Optimized | Similar model for Aurora MySQL/PostgreSQL. | | DynamoDB | On-demand vs. provisioned | Different abstraction, but predictable cost theme. |
For applications where I/O charges exceed 25% of the total database spend, switching to I/O-Optimized can result in up to 40% savings . When to Choose I/O-Optimized vs. Standard documentdb io optimized
Amazon DocumentDB separates compute (instance) and storage. The storage tier automatically scales up to 64 TiB. I/O operations include reads, writes, and index updates. In the tier, you pay for: | Database | IO-Optimized Equivalent