As will very dry conditions. The IceCube neutrino telescope at South Pole used LTO-3 tapes to store data until they switched to only hard drives around 5 years ago. At that point, the newer tape drives had been tried (IIRC LTO-5 was the industry standard by then) but they never seemed to work, presumably because the humidity on station is incredibly low. It was considered more reasonable to keep the old LTO-3 equipment in use, versus building a humidor for the tapes and drives.