I have a Dell PowerEdge server running SBS2000. It uses a PERC 4/DI (PV22xS) SCSI RAID controller. Currently, there are a total of 6 physical hard-disks. 2 are used in a RAID1 for the OS, 3 are used in a RAID5 for Exchange Server data, and 1 is a spare. I would like to get rid of the RAID5 and replace it with a RAID1 instead, so that I can have a total of 2 spare drives; I also want to do this so that I can rotate disks out of the mirror and keep copies of the drives offline. It seems logical that I should somehow mirror the RAID5 data to the single spare drive, and then kill the RAID5, and then make a RAID1 from the single drive. However, I can not figure out how to do this. I also can't add an IDE drive, nor can I use an external drive. Since this is an E-mail server, I can not have significant down-time. I need to be able to copy the data to the single drive so that when I reboot the system with the RAID5 removed, the system will work with the single drive. How can I do this?