The movement of data from fast-access storage ( magnetic disc ) to storage of lower access speed ( magnetic tape ).

数据由快速存取存储器（磁盘）传送到存取速度较低的存储器（磁带）的过程。

youdao

By using of the storage board, high speed real-time data can be successfully stored with high density lower speed FLASH chips.

成功实现了用高密度、相对低速的FLASH存储器对高速实时数据的可靠存储。

youdao