直接存取存储器

A user, group, or DASD data set that is defined to RACF. 在资源存取控制软件(RACF)中定义的一个用户、一组用户或者磁盘(DASD)数据集。

PS data sets can be stored on Direct Access Storage Devices DASD or tapes. 物理连续数据集存储在。

This saves you from using up a real device and on DASD tracking and management. 这可以防止用完实际的设备,同时节省DASD跟踪和管理的开销。

The term DASD applies to disks or to simulated equivalents of disks and magnetic drums. 术语DASD指代磁盘或者其他磁盘的模拟替代物和磁鼓。

VSAM is used for direct or sequential processing of fixed-length and variable-length records on DASD. VSAM用来对DASD上定长或变长的记录进行直接或顺序的处理。

You can store all types of data sets on DASD but only sequential data sets on magnetic tape. DASD可以存储所有类型的数据集，但是磁带只能存储顺序数据集。