reason # 1010101 why i love mac

it's for this simple line of code:
rsync -Cavz --delete ./Volumes/backup/music

enter that in Terminal from a directory you wish to back up (that folder with your 250G of toonz perhaps), and the hamsters behind the scene will sync (not just brute overwrite) the second directory with the first, spitting out a verbose output so you know exactly what's going on.

next step is figuring out a chron job to run that sync whenever both drives are connected.

- you're such a loser - laf said when i confessed i'd spent my friday night with a double-shot of jameson and 2 unix manuals - it's no wonder you're alone. but there was fondness in his voice.