Disk File Management in a Medium-Scale Time-Sharing System.

The paper descibes a compact and highly efficient disk file management system responsible for the management and allocation of space on moving head disk drives in a medium-scale time-sharing system. The disk file management system is a major component of the Experimental Time-Sharing System (ETSS) developed at the Learning Research and Development Center. ETSS has been successfully operating for nearly two years and is a multilanguage general-purpose time-sharing system based on Digital Equipment Coporation's PDP-15. (Author)