3-2-1

短语

别名

3+2+1

释义与例句

adj.
  1. 1.

    Following the mnemonic "3-2-1 rule" for data archiving and protection: three copies of a piece of data are created, using two different types of media, and one is stored offsite.

    计算机 工程 数学

    3-2-1 backup