I did some research on my situation, and it may be the case that my Power Setting Options were causing the problem. I did not realize that RAID 1 drives could not be powered down without causing 'drive errors' with IRST.
I have to admit I still have philosophical problems with the choice of RAID 0 vs 1. My system and program disk is a RAID 1 array. This information would be the most problematic to reinstall, so I want to add reliability to the storage. If RAID 1 is not reducing the failure rate, then I would change.
I do backup the data from my RAID 0 array, daily. I keep rather dense media files on this drive, as well as gaming programs. Any improvement in performance of the drives is helpful, as is the increase in size.