二级存储设备
二级存储设备-
HANA应用了常驻内存、数据源无关的计算引擎，要处理的数据存放在RAM中，而不是从二级存储设备中获取，这样提供了性能的提升。
HANA employs an in-memory , data source agnostic computing engine , where data to be processed is held in RAM instead of reading from secondary storage devices thus providing a performance boost .
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数据采集系统是用于获得数据处理和存储，二级存储设备作为随后分析。
Data acquisition systems are used to acquire process operating data and store it on , secondary storage devices for later analysis .