You can use igroup throttles to limit the number of concurrent I/O requests an initiator can send to the storage system, prevent initiators from flooding a port, and ensure that specific initiators have guaranteed access to the queue resources.
Step
Enter the following command: igroup set igroup_name throttle_reserve percentage
Example
igroup set aix-igroup1 throttle_reserve 20
The igroup throttle is created for aix-igroup1, and it persists through reboots.