I am sure that this subject has been discussed many times, but I couldn't find anything suitable to my situation.
I only use my internal HD for my apps, and downloading. I mostly used Ext HD. At the moment I have about 120 GB of dig images etc., and growing. I have 1-350 GB and 1-500 GB Ext. I also have a couple of old int HD that I'm put them into a case to use them as an Ext. HD. I have made extra copies to these old DR.
So here is my question. What is the best way to set up the primary Ext. HD. and how should I set up any other subsequent Ext HD as back up.
I am ambivalent relying too much on the couple old int HD, that now I'm using as Ext HD they have about 150 GB.
I am no interested in setting up a RAID system. I was also thinking getting a 1TB Ext Firewire HD, and using it as the primary Ext HD, and using the 500/350 as secondary back up. But I'm also looking for other options without the need to spend more $$ to buy another Ext HD.
:o


