Course: Distributed operating systems

Introduction to Distributed Systems

Structures of Distributed Systems

• Hardware Architectures
  Tightly-coupled systems
  Loosely-coupled systems
• Software Architectures
  Distributed operating system (DTOS)
  Multiprocessor operating system (MTOS)
  Network operating system (NTOS)
• Models of Distributed Systems
  Minicomputer model
  Workstation model
  Workstations-server model
  Processor-pool model
  Hybrid model

• Distributed Operating Systems
  Features of operating systems for distributed systems
• Key Characteristics of Distributed Systems
  Resource sharing
  Autonomy & interdependence
  Concurrency and parallelism
  Heterogeneity & Openness
  Scalability
  Transparency
  Inconsistency in state
  No global time
  Reliability
• Design Goals & Issues of Distributed Systems
  Design issues of distributed systems
• Advantages of Distributed Systems
  Advantages of distributed systems
  Disadvantages of distributed systems