Indeed, I disabled it and it turns out I also was totally clueless about Intel's RS Tech. It is for those systems that have the operating system on a SSD and store on a normal HD. Up until a few weeks ago I only had the (C) SSD in my build. I had a 60gb SSD in an external enclosure for weekly imaging that failed (the enclosure) so now that SSD is in the tower too. At any rate, IRST has been uninstalled and everything seems fine running in Standard AHCI mode.