A drive has failed to respond to a command from a 3ware RAID controller within the allowed time limit (20 secs.). After sending this error message, the controller will attempt to recover the drive by sending a reset to that drive and retrying the failed command.

Possible causes of drive time-outs (also known as ATA-Port time-outs) include a bad or intermittent disk drive, power cable or interface cable.

You may also want to use the drive manufacturer’s diagnostic and repair utilities on the drive.

For links to drive manufacturer diagnostic utilities and troubleshooting advice, search the LSI KnowledgeBase for keyword 14924 at
http://kb.lsi.com