Disk spin-down problem, RN104, fw 6.2.0

Ok, I think I see what you are suggesting, but I don't understand what the case you are trying to prevent has to do with bit-rot. If a bit changes on the disk then the sector won't pass internal checksums done by the disk firmware and it will be an IO error. The chance of some bits flipping and the internal checksum still being good are pretty obscure (like not in our lifetimes). Statistically a good read of the wrong data either means someone wrote it or there was a silent failed write that left the old data in tact. Neither of those cases should be labeled "bit-rot". They happen either because someone wrote directly to a leg or the RAID sw/hw itself was buggy or there was a deferred write error.

steve