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在很多的情况下,用户并不关心数据存储在哪个磁盘上,只希望在需要的时候能够迅速和准确地找到它并且能够被使用,即使数据还在不停的增
In many cases, the user does not care about which disk the data is stored on, only hoping to find it quickly and accurately when needed and to be able to use it, even if the data is constantly increasing