In the previous editions of SQL Server, the Resource Governor allowed you to specify the limits on the amount of CPU or memory that a process can use as part of the resource pool. In SQL Server 2014, this has now been improved with new Resource Governor settings to include the I/O activity too. In SQL Server 2014, you can use the new MIN_IOPS_PER_VOLUME and MAX_IOPS_PER_VOLUME settings to control the physical I/Os issued for user threads in a given resource pool.