The raid 1 on my friends machine does not appear to be working correctly. When it starts up it looks for the raid and then when it finds it there is a message that says degraded on one and error on another. What does a person do to get this fixed? I am pretty sure that this means one of the hdd has gone sour. When I do replace it can I replace it with a larger hdd? There are 320 in there now but I would like to replace it with a 500gb or larger. I know that it will convert it to only a 320 but shortly I would like to replace that one with a 500gb also. Will that work? If I would put in a larger hdd let it rebuild and then put in a larger one to replace the one that is still good to get a larger hdd array? Thanks.