I use Acronis True Image Home for backups, which is simple to use, and gives you a lot of options for the type of backup. (scheduling, whether you want to do a full backup or just sync changes each time etc.)
The only downside to using Acronis is that it stores backups in its own
.tib format, rather than the files being directly accessible if you connect the drive to another computer. This is fine for an actual backup, but not if you just want a portable copy of your library.
I have it set up so that it runs a non-stop backup to one external 2TB drive, which checks for changes every five minutes and syncs them over. The way it does this also means that you can go back several "versions" and get back a file you deleted a few days ago, or undo changes etc.
I also do a daily incremental backup to another 2TB drive which backs up the current state of my library every night. The way this works is that once a week it does a full backup, and each day there is a backup of the changes made. (e.g. if you added 200 files, it only backs them up) There are two full backups stored at any one time, so I can go back to how my library was at any point in the last two weeks.
Both of these drives are left connected to my system, and the backups are fully automated.
And once a month, I plug in a third external drive (1TB) clear its contents, and simply use explorer to make a full copy of my library onto it, so that I have a backup where the files are easily accessible on any other system without requiring Acronis to be installed, and on a drive that is
only connected during the backup process.
I am planning on replacing this drive with two 2TB disks (1TB is only enough to store one copy of my library) and moving to a weekly process, rather than monthly, alternating the weeks which the drives are used. (disk 1 is weeks 1 & 3, disk 2 is weeks 2 & 4)
I would like to figure out a way of automating this process so that it happens automatically when the drives are connected to my system though.
I would love it if Media Center had a feature which could automate this third step, automatically syncing my entire music library to an external drive, with an updated library pointing to that location, and putting a portable install of both the Windows and Mac versions at the root of the drive. Then I would have a portable backup of all my files which works on any system I connect the drive to.
See my post above. Manually copy your files from C: to E:, you don't need software to do that. Do you know how to copy files.
Manually copying files over to another drive is not a proper backup solution, and doesn't sync changes unless you simply wipe the backup drive each time you go to create an updated copy of the files.
I am happy to do this with my tertiary backup, but it's a very slow manual process.
And as someone else also mentioned, RAID is not a backup solution either. RAID protects against drive failure, but it does not protect against data loss. (e.g. accidentally deleted files, corrupted files etc.)
You want backups going to external drives, and should have at least one backup that is only ever connected to the system during the backup process, and disconnected any other time.