There are real downsides with using cloning
for backup, particularly its much too easy to clone backwards
and overwrite what you are trying to backup.
Not if you put a physical label on the disks.
I use removable trays and have physical labels on the trays so I know
what is what. I make sure beforehand by checking the labels right
before I clone. I have been doing this on the basis of a couple times
per week for over a year now and never once have I even come close to
screwing up.
The method I use is to label each disk with a letter of the alphabet
and invoke the simple protocol that A steps on B, B steps on C and C
steps on A. I keep the disks in a precise order which acts as a second
layer of protection.
I always have the source disk in the boot tray, so I know it is the
source of the clone. The worst that happens is I step on the last disk
instead of the second last. That's why I have 3 disks.
Using a system like this it is NOT "much too easy to clone backwards
and overwrite what you are trying to backup." However for people who
do not know what they are doing, I can see the possibility. But then
they should not be cloning in the first place.
--
"Nothing in the world can take the place of perseverence. Talent
will not; nothing is more common than unsuccessful men with talent.
Genius will not; unrewarded genius is almost a proverb. Education
will not; the world is full of educated derelicts. Persistence and
determination alone are omnipotent."
--Calvin Coolidge