Quote Originally Posted by jsnetman View Post
Like I said earlier had the same symptoms but on different hardware. Turned out to be the backplane or hot swap bay at fault. Replaced it and all is well. I'm not familiar with your hardware but if the backplane has any electronics on it at all, that could be the cause of the problem. The way I idendified the problem was by by-passing the backplane and plugging a drive straight into the controller.
Thanks I shall do the same and see what the result is.