Originally Posted by Brad
Actually, it's still a good question,
THANK YOU for this reply, it was fascinating and informative.
It is incredibly helpful to understand that it's not a simple copy, but more along the lines of a Star Trek transporter, where it is pulling a full model of the structure into the transporter's buffer so that there's a mirror on the other end of the transport.
Somewhere along the line I have seen mention of the shingled drive format, and since these are indeed 2.5" drives I suppose the probability is high, especially since fewer people are probably using small externals and the stock could be old.
Watching this happen will be fun.