Service Availability: Principles and Practice

Chapter 17

Conclusion

17.1 Summary

In Part One of the book, we introduced the notion of service availability and presented a set of relevant principles and concepts that are associated with dependability, for the purpose of achieving service continuity even in the presence of some failures in the underlying system. We went on to give a brief description of the circumstances, the vision of developing open standards for service availability and how the Service Availability (SA) Forum was founded.

Part Two discussed some of the key services and frameworks specified by the SA Forum for delivering service availability. The main emphasis was on the reasons behind the design choices for the standard as much of this information was not documented in the specification at all. Therefore, this part can be viewed as the main principles behind the SA Forum services and frameworks providing the readers with valuable insight into the specifications and therefore enable them to use the specifications as they were intended.

We started this part of the book with an overview of the architecture of a SA Forum system, and discussed the dependencies and interrelations among these services. In the information model chapter, we explained the background and considerations that were taken into account as the different part of SA Forum Information Model were developed; and application designers need to follow these same considerations whenever they extend the information model for their application.

In the ...