At this point all I can say is do nothing until such a time as you are CERTAIN of how to proceed.Rather obvious advice, but needed to be said.Unfortunately I do not really have anything to add that is of any benefit to you.Do you have backups of the RAID array?I do not, well some of it I do, but 95% of it I do not.Also,the drive is a dynamic volume.Further, The array has always been listed twice...