What is Direct Acess Storage Device?

DASD is a general term for magnetic disk devices. It has been used in the mainframe and minicomputer environments and is sometimes used to refer to hard disk drives for personal computers. Designed for mainframe environments, DASD is designed to meet the needs of your most demanding applications. Book a demo at https://luminex.com  to know more about DASD working.

Direct access storage devices (DASD) can be any storage medium that uses direct physical addressing to retrieve data. This includes hard disk drives, disk arrays and automated tape libraries. To take advantage of data storage on a direct access storage device, applications are written with direct access in mind by utilizing small file sizes and using file operations that allow chunks of data to be read or written quickly.

DASD improves upon sequential access storage devices, which use physical storage mechanisms like cassettes and magnetic tape reels that make it more difficult and time-consuming to access stored data.  Direct-Access Storage Device (DASD) is a storage technology whose characteristics make it possible to access data directly. With direct access, data is accessed by starting at one location and then going through successive locations until the data is found.

Direct access is two to four times faster than sequential access, which means less wait time for you and higher productivity for your company.

Leave a Comment