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"Computer systems consisting of many machines will be the norm within a few years. However, making a collection of machines appear as a single, coherent system - in which the location of files, servers, programs, or users is invisible to users who do not wish to know - is a very difficult problem. LOCUS, a distributed version of the popular operating system Unix, provides an excellent solution. It makes a collection of computers, whether they are workstations or mainframes, as easy to use as a single computer by providing a set of supports for the underlying network that is virtually invisible to users and - applications programs. This "network transparency" dramatically reduces the cost of developing and maintaining software, and considerably improves the user model of the system. It also permits a variety of system configurations, including diskless workstations, full duplex I/O to large mainframes, transparently shared peripherals, and incremental growth from one workstation to a large network including mainframes with no effect on applications software required to take advantage of the altered configurations.In addition to transparent, distributed operation, LOCUS features also include high performance and reliability; full Unix compatibility, support for heterogeneous machines and systems, automatic management of replicated file storage; and architectural extensions to support extensive interprocess communication and internetworking."

LOCUS (Computer operating system) --- Computer architecture --- Electronic data processing --- Ordinateurs --- Traitement réparti --- Distributed processing --- Architecture --- -681.3*C21 --- 681.3*D41 --- ADP (Data processing) --- Automatic data processing --- Data processing --- EDP (Data processing) --- IDP (Data processing) --- Integrated data processing --- Computers --- Office practice --- Architecture, Computer --- Network architecture and design: networks (centralized, circuit switching, distributed, packet, store and forward); network communications; netword topology --- Process management: concurrency; deadlocks; multiprocessing/multiprogramming;mutual exclusion; scheduling; synchronization (Operating systems) --- Automation --- Computer architecture. --- Distributed processing. --- 681.3*D41 Process management: concurrency; deadlocks; multiprocessing/multiprogramming;mutual exclusion; scheduling; synchronization (Operating systems) --- 681.3*C21 Network architecture and design: networks (centralized, circuit switching, distributed, packet, store and forward); network communications; netword topology --- Traitement réparti --- 681.3*C21 --- Distributed computer systems in electronic data processing --- Distributed computing --- Distributed processing in electronic data processing --- Computer networks --- LOCUS (Computer file) --- Distributed System --- Operating System --- File System --- Distributed computer systems --- Operating systems: LOCUS --- COMPUTER SCIENCE/General