At the risk of contradicting Goro, I'll tell an anecdote.
A friend went to her interview having put several complete paper copies of her primary and secondary applications in a portfolio which she always carried. She did not expect to need it, but considered it a security blanket, and had made this practice part of her interview routine. On this day, a group of applicants met outside the interview room, waiting to be called. This was a panel interview with five or so members. At the time the first interview was to begin, a representative from the panel came out to the applicant group and explained that their server was down and they had no way to access applications. My friend volunteered that she had brought copies of her materials and would be happy to go first. She distributed her materials, nailed the interview, and was offered a spot. Unicorn experience, but possibly worth noting.