I've got about 500 GB of data that I'd like to archive onto a hard disk. However, I've found disks to occasionally flip a bit or two over that 500 GB of data over a span of about 5 years or so. Large disk systems mitigate this problem by using multiple drives, and "scrubbing" the data regularly.
However, I'd like to yank this drive out of my machine, place it at someone else's (a relative, or something like that) house, and leave it there for long term offsite archival of that data. Because the drive isn't plugged in, I can't use anything like the data scrubbing typically used to mitigate this problem.
I've had good results for optical media with the DVDisaster tool. Does such a tool exist for general hard disk files?