We're running a network using SCO Unix version 3.5.4. Our main Hard Drive (SCSI disk) is near the end of its reliable lifetime. I need to mirror the contents of this disk to a new SCSI hard disk. Then, I'd need to switch the disks so that the new disk becomes the boot disk. In effect, I shall be mirroring the contents of the old disk with the new, and replacing the old with the new.
What are the necessary commands to do this, and how do I configure the new HD for simultaneous operation with the old in order to accomplish the actual mirroring phase?
I am assuming that once this is accomplished I will be able to simply switch the SCSI ID's of the drives and the system will function as before.