The actual factor is most likely around 1.4-1.5x and for sure can’t be any more than 2.2x in this day and age. Dumbest possible implementation will be “only” 3x so no it’s nowhere close to 5gb

Edit: looks like it’s public so i can actually tell you that google uses RS 3,2 which gives 1.5 replication factor. When i was there a few years ago storage folks told me they never lost a single stripe of data