https://www.i-garden.org/blog/2018/03/31/321-%e4%b8%96%e7%95%8c%e5%82%99%e4%bb%bd%e6%97%a5-world-backup-day/
儲存媒體演變歷史 (Storage Media History) (13) - 「3-2-1 備份法」響應 31/3 世界備份日(World Backup Day)