Title :
Reliability and availability of a wide area network-based education system
Author :
Dixit, Paritosh ; Vouk, Mladen A. ; Bitzer, Donald L. ; Alix, Christopher
Author_Institution :
Dept. of Comput. Sci., North Carolina State Univ., Raleigh, NC, USA
fDate :
30 Oct-2 Nov 1996
Abstract :
An important class of quality of service (QoS)-dependent network-based applications are computer-based education systems. A successful network-based education (NBE) system needs to provide appropriate QoS at the user level. This includes adequate end-to-end response delay and adequate system reliability and availability. This paper presents results from a reliability and availability evaluation of NovaNET. NovaNET is a successful low-overhead multimedia education system which serves thousands of users on a daily basis. We analyze eight years of failure data and examine correlations among system failure events. The NovaNET data are used to discuss practical bounds on the reliability and availability of an NBE system
Keywords :
computer communications software; computer network reliability; delays; educational technology; fault diagnosis; multimedia communication; software quality; software reliability; wide area networks; NovaNET; computer-based education systems; end-to-end response delay; failure data; low-overhead multimedia education system; system availability; system failure events correlation; system reliability; user-level service quality; wide-area network-based education system; Application software; Availability; Computer applications; Computer network reliability; Computer networks; Computer science education; Delay systems; Failure analysis; Multimedia systems; Quality of service;
Conference_Titel :
Software Reliability Engineering, 1996. Proceedings., Seventh International Symposium on
Conference_Location :
White Plains, NY
Print_ISBN :
0-8186-7707-4
DOI :
10.1109/ISSRE.1996.558815
