Many veterinarians are under the FALSE impression that their digital radiographs are backed up. They have been sold a lie that a RAID 1 or mirrored hard drive is a "bomb proof" back up. We have discussed this before and it is simply not the case. You must backup your data OUTSIDE of your main server to be entirely secure. That backup may reside in your hospital or in a remote archive.
Here is an example from the non-radiology world that proves this point.
Blogging service JournalSpace has been completely wiped out after the drives that housed their entire database were overwritten.
The problem was that their backups weren't actually backups at all. The servers were set up with a mirrored RAID system so that if the primary drive should fail the secondary drive would be used to recover the primary. This alone is risky business, as it only protects you from the failure of one drive. In the case of JournalSpace, the drive didn't fail but instead the data was overwritten/erased on one drive leading the other drive to follow suite and clear itself. A data recovery team was unable to retrieve the database.
More information: http://journalspace.com/this_is_the_way_the_world_ends/not_with_a_bang_but_a_whimper.html
Are you vulnerable to losing all of your digital radiographic images and running afoul of your state board in the process? If you rely on a mirrored hard drive you most definitely are. Do something about this TODAY.