I recently purchased a DNS-325 without drives. Bad timing given the recent price increases on hard drives. To ease the pain, I would like to put a single 2TB drive in now (specifically, a WD20EARX 2TB Caviar Green SATA3 Intelli Power 64MB Cache) and then add a 2nd one later. I want them to be in RAID1. My questions:
1. When I add the 2nd drive, will I be able to have the 2nd drive easily duplicate the 1st drive? Or will I be forced to backup, reformat in RAID1, and then restore?
2. How identical do the two drives in RAID1 have to be? I worry that I might not be able to get the exact same model in a few months time.
Any help is appreciated!