Looking for experience users who have done this procedure.
Briefly, I have a 2TB My Book Studio (2x 1TB disks) that I use as a mirrored array with effective size of 1 TB, attached to a Mac mini. I am almost out of space, and would like to replace the disks with 2 TB ones in my old enclosure, copying all the data from my old disks onto the new ones to end up with a 2 TB mirrored array and two spare 1 TB bare drives as backups. My old hard disks were caviar green, and the replacements I ordered are also caviar green, but 2 TB each.
How do I proceed? Can the copying be done by replacing 1 TB drives one at a time in the enclosure, or do I need an additional 1 TB drive to back up my array before I insert 2 TB disks into the enclosure?
Thanks in advance.