[Big Fat Octopus]

I want to setup an external 80gb FireWire Hard drive to act as a backup of my 80gb iMac hard drive.

Is the MacOSX Disc Utility RAID feature an effective way of doing this?

I am assuming I should set it to mirroring. I basically just want to have data automatically backed up as I create it on my primary iMac Hard Drive.

Does anyone have experience with this? I'm interested primarily about whether this results in performance degradation.

Thanks in advance :-)

[Axo1ot1]

Not that I think it would work, but that's probably a really bad idea. If you get disconnected or your FW HD powers down you could screw both copies up really seriously.

[chris v]

Just download Carbon Copy Cloner and set it to clone your boot drive to your firewire drive every few days in the middle of the night. It's amazingly simple.

CV

[C.J. Moof]

Originally posted by chris v:
Just download Carbon Copy Cloner and set it to clone your boot drive to your firewire drive every few days in the middle of the night. It's amazingly simple.

CV

I second that. I've probably done 100 "oops, I didn't mean to delete that/save over that" restores for every harddrive failure restore. A weekly backup will have the potential to save you from that, while a RAID 1 allows you to have the same undesired file twice.

I use DejaVu to backup to my external firewire weekly, and Backup.app to store my most important data offsite.