I've been asked to help replace a failed HD in a RAID setup and know very little about them. The machine is a DELL XPS with XP Media on it. DELL sent a replacement drive of the same model. When swapped, the system will not recognize the new drive. What could be the cause? The system boots OK, but the drive is not found. I'm not in front of the machine but would like any pointers or advice to look for once I get it.
Also, what type of setup needs to be done to configure the drive so the one disk will mirror the other?