I said it's a fucktonne of data gone if it's data that is relatively small in terms of file size per amount of information stored. If I lose a million words of a novel I'm writing I'm going to call that a huge amount of stuff lost even though the file size is probably somewhere around a megabyte. I did not at any point comment on whether or not 150 TB is a lot of storage for an organisation like a university in and of itself; the bit about my point of reference was specifically to illustrate that I have no idea if it is or not