In what situations did you encounter data corruption and controller timeouts?   I'm using a Rocket 640L on 5rc11 (no enabler script though), and am in the process of adding my second drive to it. The second drive is currently pre-clearing and I've run a parity check at the same time to stress the system a bit. So far nothing bad reported in the system log, and no parity errors found. Still waiting for the pre-clear results, and I guess simultaneous writes to both drives on the 640L remain to