use time machine to back up to two different external hard drives
I have an iMac and backup using Time Machine to an external hard disk. However, if there was a fire or a theft I would loose both my iMac and external disk. So I intend to buy a second external hard disk and backup to it once a week and then store it off site.
Presumably it is as simple as unplugging my first external HD and plugging in my second HD and ask Time Machine to backup??
Thanks
iMac, Mac OS X (10.6.8)