For the first Sunday, a base level 0 backup is taken, all data blocks are copied.
对于第一个星期天，采用基本级别0备份来复制所有数据块。
If data bulk is very great, can reserve base expresses backup, reshipment hind undertakes extracting, (professional personage ability undertakes this, discreet) can reduce a few workload.
假如数据量很大，可以吧库存基础表备份，重装后进行提取，(这个是专业人士才能进行的，慎重)可以减少一些工作量。
If data bulk is very great, can reserve base expresses backup, reshipment hind undertakes extracting, (professional personage ability undertakes this, discreet) can reduce a few workload.
假如数据量很大，可以吧库存基础表备份，重装后进行提取，(这个是专业人士才能进行的，慎重)可以减少一些工作量。
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