I want to thank all responders. To clarify, I do not share data between computers, and I have a time machine backup disk for each. The Mac Mini is dedicated to my primary system and is used only for music playback. The MacBook Pro serves as my general computer and as a server for my secondary systems. As most of my music library is duplicated across both computers, I feel the need to backup only the files on the Mac Mini.
I will look into the SuperDuper and Carbon Copy Cloner backup programs. I am not familiar with benefits they provide. Any additional information would be appreciated.
I seems to me that one issue is whether I am interested in backup only, or if I want to use a backup disk as a library source for playback in regards to the use of USB vs. firewire based drives. Given the cost of drives, I believe I will backup on both types. USB would serve better for transfer to other types of servers should I get away from the computer. Firewire would serve better as a playback device when using computer. Am I missing something here?
Again, thanks for the input, and in advance for any additional info.