They lost data back in 2011: https://www.datacenterknowledge.com/archives/2011/03/01/google-turns-to-tape-to-rescue-lost-gmail https://www.datacenterknowledge.c

They lost data back in 2011: https://www.datacenterknowledge.com/archives/2011/03/01/google-turns-to-tape-to-rescue-lost-gmail https://www.datacenterknowledge.com/archives/2011/03/01/goog... And they recovered everything. I assume that they lose data all the time, but restore everything fast enough, so we users simply don't notice.