Ensure that you use the correct host bus adapter device driver and firmware levels for your Power Systems AIX hosts.
For Lenovo Storage V3700 V2 and Lenovo Storage V3700 V2 XP: https://datacentersupport.lenovo.com/us/en/products/storage/lenovo-storage/v3700v2/6535
For Lenovo Storage V5030: https://datacentersupport.lenovo.com/us/en/products/storage/lenovo-storage/v5030/6536