I updated to RST12.9 however the new version did not completely solve the problem.
Currently, Event Viewer shows a cluster of 3 irstrtsv errors every 5 minutes.
I checked irstrtsv in Computer Management - Services and this Service is running and starts automatically.
Service description: "Flushes dirty pages on entry to Standby"
I tried a Diskeeper boot time chkdsk and defrag folders and that did not end well as the check disk corrupted the Win7 start up and resulted in a BSOD and I had to run chkdsk from Win7 install DVD - System Recovery Tools to get the Accelerated RAID-1 drives back.