HI,
I'm afraid that what I have to say is not that helpful but I too have thsi problem adn have also replaced the drive. All I can suggest is do what I do whichis shut down, disconnect the cable from the back of the server, re-attach it adn boot up. That gets rid off it for a few days.
I have replaced the surestore, the cable and the SCSI card in the server but to no avail.
Paul I plug you in, dim the lights
Electric Barbarella !