Abstract :
The appearance in the commercial marketplace of online auxiliary memory devices with very large capacities has resulted in several new and interesting problems. These problems include new applications of the devices (generally called mass storage facilities or MSF´s) for storage of on-line data, the need for new data structures organized about the physical characteristics of the MSF, problems in performance, enhancement of automatic device and data control, enhancement of automatic memory management systems, increased concern for data integrity, and the continuing need for more memory protection capability.
