Correct Answer: ACTo increase Random Write IOPS, adding more disks of smaller capacity is the most effective action. This is because adding more physical disks to the RAID array increases the number of spindles, which improves the ability to handle more IOPS due to the parallelization of disk operations. Increasing the capacity of the SSDs or upgrading the base model would not directly address the need for increased IOPS, and adding more FC ports would primarily affect the data transfer rate rather than the IOPS. Therefore, option A is the correct choice to satisfy the customer's request.