I have a striped RAID set that is composed of two equally-sized partitions on separate HDDs, but those HDDs have OTHER partitions on them. I want to erase only the data on the striped RAID partitions. When I press the button in Disk Utility to delete the RAID set, it says that it erases the data on both disks. Does it erase all data on both partitions, or does it wipe each HDD fully? I'm afraid to press the OK button. It would suck if it killed my other partitions.