Distributed Operating System

  

An operating system which manages a collection of independent computers and make them appear to the users of the system as a single computer.

GOALS OF DISTRIBUTED SYSTEM

Making resources available

Distribution transparency

Openness

Scalability

HARDWARE ARCHITECTURES

Multiprocessor

Tightly coupled. Shared memory.

Multicomputers

Loosely coupled. Private memory. Autonomous.

SOFTWARE ARCHITECTURES

Multiprocessor OS

Looks like  a virtual uni-processor, contain only one copy of the operating system, communication via shared memory, single run-queue

Network OS

Does not like a virtual uni-processor, contains and copies of operating system, communication via shared file, and run-queue

Distributed OS

Looks like a virtual uni-processor (more or less), contain and copies of operating system, communication vie message, and run-queue

Disediakan oleh: Che Nurlailatul Ashikin