On Mon, Apr 28, 2014 at 06:23:28PM -0400, Peter Johansson wrote: > I do this for my files and I have never found any corruption of media > ("bit rot") but I did have an interesting experience moving the data > from a bunch of bare IDE disks onto a NAS a built a while back. > Because I had no available IDE ports on the NAS, I was using IDE-USB > dongles to copy data onto the server. I was getting quite a number of > hash fails on the target and it took me *quite* a while to track this > down to flaky firmware in my USB-IDE dongle. [...] Yes, I've seen that too. The USB IDE adapter was somewhat cheap though, and the product didn't last long in the market. I use checksums to verify USB SATA adapters, combined with an eject and power cycle to flush any adapter or drive caches. --=20 James Cameron http://quozl.linux.org.au/ --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .