I had this same problem recently and went nuts trying to figure it out. For me it happened with my two WD Green data drives (both WD20EZRX). The errors were really intermittent. One thing that would always trigger them was running a check with the dynamix file integrity plugin, I'm assuming because of the nature of that workload.
First I swapped all my sata cables with brand new ones, still had the problem. Then I swapped the backplane, no help. Going further, I plugged the drives straight into the motherboard (Asrock H97 Pro4)...and no luck. The thought of RMA'ing the board was a nightmare, so I stepped away from it for a while.
After more research and troubleshooting, it turned out to be a combination of NCQ, WD Green drives, and the Intel controller. The green's just didn't like having NCQ enabled on the motherboard controller. My WD Black and Seagate were fine. I ran with NCQ disabled for a few days, no errors in the log.
The write speeds were worse with NCQ disabled, so I grabbed an extra Dell Perc H310 card from work and flashed it to the lsi IT firmware to turn it into an HBA. I plugged all my drives into the card and enabled NCQ. It's coming up on 2 weeks error free this way with great performance.
Long winded, I apologize. Try messing around with the Force NCQ Disabled setting.