direct access storage devicen.Abbr. DASDComputer Science（名词）缩写 DASD【计算机科学】
A type of storage device, such as a magnetic disk, in which bits of data are stored at precise locations, enabling the computer to retrieve information directly without having to scan a series of records.直接存取存储器，随机存取存储器：存储设备的一种类型，如可以在准确位置存储数据位的磁盘，能使计算机无需扫描一系列记录直接地恢复信息