Ah, my Beloved, fill the Cup that clears TO-DAY of past Regrets and future Fears: To-morrow!—Why, To-morrow I may be Myself with Yesterday's Sev'n thousand Years.

对一切数据进行冗余备份，至少要有一个物理硬盘备份和一个云端备份。每个备份都要多于一个。想想要是你弄丢了所有数据、照片、笔记，得花多少钱来找回它们？与遗憾相比，备份很便宜。