The situation in short: I had three 500GB hard drives in a 2008 Mac Pro in RAID0, one now fails to mount but sometimes shows in in disk utility. Very little was backed up. The question: Is it possible to simply repair or clone the failed hard drive myself? The situation in full: The hard drives are all 500GB Seagate Barracuda 7200.11, ST3500320AS. Bought refurbished from Dabs.com. Each of the hard drives was was divided into a small and large partition, the small partitions were combined in Disk Utility (software RAID0) to create a 'scratch' volume for current work, the large partitions were combined to create a large storage volume. The computer started making unusual noises, and these two volumes would occasionally unmount and disappear. I managed to backup my iPhoto library before it stopped mounting completely. One of the hard drives did not show up in Disk Utility. The other two are still recognised as having two RAID slices. At this point I stopped using the computer for many months, unsure what to do. Early this year I tried again, the volumes would still not mount, but at least all three disks showed up in Disk Utility. I removed all three hard drives from the computer and stored them in the padded bags they were delivered in, to prevent further damage until I could figure out what to do. The sob story: I've called a data recovery agency and their price for this job starts at £975+VAT. I recently graduated from university, am doing unpaid work for my portfolio, and really can't afford that much money. The RAID has all of my university work since 2007 on it, as well as audio recordings of my Granpa which are very precious and irreplaceable. I unthinkingly deleted my iPhoto backup last week (believing it to be backed up somewhere else) taking with it all of my photos since 2007. I've learned my lesson about getting greedy for speed and not backing up, but I still hope to be able to get this stuff back.