Running I/O intensive workloads on PostgreSQL with Amazon EBS io2 Block Express

This article compares the performance of Amazon EBS gp3 and io2 Block Express volumes for running PostgreSQL databases, highlighting the significant advantages of io2 Block Express for I/O intensive workloads.

• Performance testing showed io2 Block Express delivered 2.08 times better transactions per minute
• Provided 3.85 times lower latency for OLTP workloads
• Offered 2.78 times lower latency for OLAP workloads
• Supports up to 256,000 IOPS and 4,000 MiB/s throughput per volume
• Offers 99.999% durability compared to gp3's 99.8-99.9%

Key takeaway: io2 Block Express is ideal for mission-critical databases requiring high performance, sub-millisecond latency, and exceptional data durability, though at a higher cost than gp3 volumes.