What is Distributed Operating System | Types | Advantages & Disadvantages

 Distributed Operating System (DOS)

Distributed Operating System is a type of operating system. Theses system processes vary in sizes and functions. There is a reduction in load on their host computer. A Distributed Operating System is over collection of independent, networked, communicated, and physically separate computational nodes. Multiple central processors are used by Distributed systems to serve multiple real-time applications and multiple users. 

A Distributed Operating System is a system which contains multiple components located on different machines, which coordinate and communicate actions in order to appear as a single coherent working system to the user. A Distributed Operating System involves a collection of autonomous computer systems, which are able to communicate with each other through LAN/WAN. 

Types of Distributed Operating System.

There are four types of DOS

1. Client Server
2. Three Tier
3. n-Tier
4. Peer to Peer

Advantages of DOS.

1. DOS give more performance than single system
2. In DOS, if one pc in distributed system malfunction or corrupts then other node or pc will take care.
3. in DOS, more resources can be added easily.
4. In DOS, resources like printers can be shared on multiple pc’s.

Disadvantages of DOS

1. Some messages and data can be lost in the network while moving from one node to another.
2. The database connected to the distributed systems is quite complicated and difficult to handle as compared to a single user system.
3. Overloading may occur in the network if all the nodes of the distributed system try to send data at once.