da13 is way too hot. 64C, why is it so much higher that the rest of the drives? This is your first obvious problem to fix. It certainly seems like there is very little airflow across this drive.
I just noticed that your airflow is definitely wrong. The rear case fan is pulling air into the case, correct?
For most common cases air gets pulling into the front of the case, flows across the hard drives, into the rest of the computer case, and then out the exhaust and power supply fans. If you have 4 fans sucking in air, you should have 4 fans blowing it out, however that is not always needed depending on the case.
The HBA likely started overheating due to poor airflow. Some HBAs require a huge volume of air and were designed to be in high flow cases.