This is interesting and, indeed, my third level of backup is at least semi-EMP-proof on purpose. However, is the Vatican library 45,000 gigabytes of 45 petabytes (those differ by a factor of 1000)? On my side of the pond, 45,000 gigabytes is 45 terabytes. But here, a billion is a thousand millions. Elsewhere, I think a billion is a million millions. Cheers, Richard On 2015-04-27 6:04 AM, CJB wrote: > Moot points ... > > http://www.bbc.co.uk/news/technology-32315449 > > CJB > -- Richard L. Hess email: [log in to unmask] Aurora, Ontario, Canada 647 479 2800 http://www.richardhess.com/tape/contact.htm Quality tape transfers -- even from hard-to-play tapes.