Problem comes from the activity signal from ST3000DM001 HDD using the same method of SAS HDD. If you use Areca side band or ARC-8666 controller’s backplane, the activity signal comes from our controller EPLD without any problem. You can try to get the new firmware from Seagate to fix it.
Tags: ARC-8666, EPLD, firmware, HDD, LED, Q40011204, Seagate