This document summarizes a project on fault tolerance and disaster recovery. It presents the contents in two parts. Part I discusses getting started, architecture, system design including mirroring servers and checkpointing, and rollback mechanisms. Part II covers the advantages of redundancy in dominance, hindrances like costs, the platform and language used, and concludes that the system achieves total integrity without impacting performance, making it fault tolerant and enabling disaster recovery.

1. W E L C O M E ……..Our pleasure

2. Fault Tolerance and Disaster Recovery …… .A Project By Chethan S.P. Manjunath prasad H.R. Under the guidance of Internal guide External guides Ms.Saritha D. Mr.shamanth kumar P.R. Babitha raghavan

3. What will be presented? ….The contents PART-I Getting started Architecture System design Mirroring server Protocol Check pointing Rollback PART-II Dominance Hindrance Platform & language Climax Authoritative facts

4. Getting Started ….The definition In case a component fails, a backup component can immediately take its place with no loss of service.

5. Architecture ..….The outline Client Main Server Mirror Server

6. System design Main Server Auxillary (image) Server File Client Details Two phase lock and commit protocol c1 c2 cn TCP/IP

7. Mirroring Servers Auxiliary Server Primary Secondary

8. 2 – Phase Commit Protocol Phase -1 Phase - 2

9. Check Pointing ? ? ? “ A Snapshot of a process”

10. Rollback Mechanism ? “ The previous checkpoint to continue the process from the point.”

11. END OF PART-I

12. PART-II

13. DOMINANCE ……The Advantages No loss of any data. Performance doesn’t vary. Self healed.

14. HINDRANCE …… The drawback Cost Overhead from EXE Installation complexity

15. Platform & Language Linux 2.6 Version ‘ C’ Programming Language

16. Climax …….The conclusion Achieves total integrity of the whole system without interrupting the system performance, it is said to be fault tolerant and disaster recovery.

17. Authoritative facts …....The References [1]Richard W Stevens, “Unix Network Programming”. [2]Douglas V Comer, “Internetworking with TCP/IP”. [3]Dennis M Ritchie et al, “‘C’ Programming language”. [4]Maurice J Bash, “Unix operating system”.

19. End

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