Best way to back up your files is on cd.... It's the cheapest medium.... Expect to use lots of cd's.. I am using Pro Tools LE, and for a typical 24 track finished song, it takes me about 7-8 CD R's to save all the audio and session files.....
For this just use the cheapy Memorex, or what I use is TDK......
Make sure you pull your audio files over onto the CD also......
When I first got my Pro Tools, I had never used DAW before and when I went to backup my first session, I just saved the session.... Cause naturally one would think that a session means, the whole deal.... But really it just means the session template... the audio files are seperate entities... sort-of
Then I went and erased the song on my HD.... A few weeks later I loaded it back on, to mix it... and All I had was the plug-in settings, and all the edit regions on screen... but no sound...
Bummer.... lost the whole thing..
Your stereo master of your final mix cannot be seperately edited, like changing the mix or other things involving accessing the seperate audio tracks.....You can cut and paste the different parts of the song around... like if you want to have the chorus repeat it self one extra time, you can just copy another chorus section onto the end of the song from one of the earlier chorus sections...
I suggest you use Apogee Cd's for mastering... In my studio we don't use anything other than those.
Hhb are Ok also, same with Quantegy..... Whatever is available in your area and prefered by you, I guess...
These Cd's are usually $1.99-$2.99 Ea...
For sessions and audio file saving, I use the bulk spindles of TDK... you get 200 for $45.00
Thats about 22 cents a piece, so they are economical for saving sessions and session audio....
(Keep in mind, Im using PT so yours may be slightly different.... But Im sure it's all the same basic concept...)
BG