The total direct access storage device (DASD) attached to this physical system, through its various fiber channels, was well over 200 TB.
通过不同光纤连接到这个物理系统上的直接访问存储设备(DASD)加起来超过200 TB。
An access to a raw device avoids the cache, resulting in direct read and write operations on the physical device.
而对原始设备的访问则没有缓存，导致物理设备上的直接读写操作。
You can store data on secondary storage devices, such as a direct access storage device or magnetic tape volume.
你可以在辅助存储设备上存储数据，例如直接存取存储设备或者磁带。
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