Evaluation techniques for storage hierarchies
Richard L. Mattson, Jan Gecsei, Donald R. Slutz, Irving L. Traiger · IBM Systems Journal · 1970
Increasing speed and size demands on computer systems have resulted in corresponding demands on storage systems. Since it has been generally recognized that the speed and capacity requirements of storage systems cannot be fulfilled at an acceptable costperformance level within any single technology, storage hierarchies that use a variety of technologies have been investigated.