Hi there First, please forgive me for my lack of knowledge on this subject!! I am a digital photographer would needs to be better at backing up my files and I am tried of going through DVDs! So, I went to a Mac store yesterday seeking help. I bought a LaCie Xtreme Hard Disk - 1 Terabyte (800 firewire connection). The Mac guy told me to partition it (partition 1 = backup 1; partition 2 = backup copy of 1, partition 3 = scratch disk) and set it up as a RAID to mirror so it does it automatically. I am wondering if this was the right purchase and two if I understand the guy correctly. In my mind, I am afraid of the LaCie crashing and losing ALL my backup copies. The guy made it sound like if the LaCie is partitioned, if one partition crashes the other ones should be fine. Would I have been better off buying two 500 Gig external drives and another smaller one for my scratch disk? I am hoping someone out there can tell me what to do. Here are my goals: 1) To have two copies of all my images and have the copies to happen automatically 2) To have a separate scratch disk so my Photoshop will run faster Last question, what size and brand external hard drives would you recommend so I decide to return my LaCie? Thank you in advance for your help!!