Optical channel diagnosis board DASD alarm light brighten, it means hard disk driver is faulty or removed, if checkpoint code indicator flash alternately Cx:00, there is bus problem that cannot be repaired. Check IMM log, there is problem in array, RAID is keeping reconstructing.
Based on situation, the problem is on server array, below operation is needed:
1. Reinstall these components:
Faulty hard disk driver
SAS hard disk driver backplane
SAS signal cable
I/O board component
Reboot server after all components is installed.
1. If the fault remains after above steps, then delete old RAID and configure new RAID.