Amazon FSx for Windows File Server, a service that provides fully managed file storage built on Windows Server, now enables you to select and update the level of I/O operations per second (IOPS) separately from storage capacity on your file system. This new capability enables you to improve price-performance for IOPS-intensive workloads like SQL Server databases and optimize costs for workloads with IOPS requirements that vary over time like periodic reporting jobs.
Source:: Amazon AWS