No abstract

LOCUS is a distributed operating system that provides a very high degree of network transparency while at the same lime supporting lligh performance and automatic replication of storage, By network transparency we mean thai at the syslem call interface there is no need to mention anything network related. Knowledge of the network and code to inleracl with foreign sites is below this interface and is thus hidden from both users and programs under norm~ll conditions. LOCUS is application code compatible with Unix 2, and performance compares favorably with standard, single syslem Unix. LOCUS runs on a high bandwidth, low delay local network. It is designed to permil both a significant degree of local autonomy for each site in the network while still providing a network-wide, location independent name struclure. Atomic file operations and extensive synchronization are supported.Small, slow sites without local mass slore can coexist in the same network with much larger and more powerful machines without larger machines being slowed down through forced interaction with slower ones. Graceful operation during network topology changes is supported.

LOCUS is a distributed operating system that provides a very high degree of network transparency while at the same lime supporting lligh performance and automatic replication of storage, By network transparency we mean thai at the syslem call interface there is no need to mention anything network related. Knowledge of the network and code to inleracl with foreign sites is below this interface and is thus hidden from both users and programs under norm~ll conditions. LOCUS is application code compatible with Unix 2, and performance compares favorably with standard, single syslem Unix. LOCUS runs on a high bandwidth, low delay local network. It is designed to permil both a significant degree of local autonomy for each site in the network while still providing a network-wide, location independent name struclure. Atomic file operations and extensive synchronization are supported.Small, slow sites without local mass slore can coexist in the same network with much larger and more powerful machines without larger machines being slowed down through forced interaction with slower ones. Graceful operation during network topology changes is supported.