Today AWS announced availability, in preview, of io2 Block Express volumes that are designed to deliver up to 4x higher throughput, IOPS, and capacity than io2 volumes, while also delivering sub-millisecond latency and 99.999% durability. io2 Block express refers to io2 volumes running on EBS Block Express architecture. EBS Block Express is the next generation of Amazon EBS storage server architecture purpose-built to deliver the highest levels of performance with sub-millisecond latency. Designed to provide up to 4,000 MB/s throughput , 256,000 IOPS, 64 TiB storage capacity, and 1,000 IOPS/GB per volume, io2 Block Express offers the highest performance block storage in the cloud. This makes io2 Block Express ideal for your largest, most I/O intensive, mission critical deployments of Oracle, SAP HANA, Microsoft SQL Server, and SAS Analytics.
Source:: Amazon AWS