NDLI: Availability analysis of the primary site approach for fault tolerance

Content Provider	IEEE Xplore Digital Library
Author	Huang, Y. Jalote, P.
Copyright Year	1989
Description	Author affiliation: Dept. of Comput. Sci., Maryland Univ., College Park, MD, USA (Huang, Y.; Jalote, P.)
Abstract	The primary site approach is often used to support fault tolerance against node failures. The authors present an analytic model to evaluate the availability of a system using the primary site approach. The effect of the number of replicas and the checkpoint interval were studied using the model. The authors found that the optimal checkpoint interval is proportional to the square root of the checkpoint overhead and inversely proportional to the request arrival rate. For the degree of replication, the results depend on what kind of checkpointing scheme is used. In systems using the broadcasting scheme, it was found that there is no optimal degree of replication: increasing the degree of replication increases the availability. However, in systems using the point-to-point checkpointing scheme, an optimal degree of replication exists: increasing the degree of replication beyond this optimum decreases the availability. Although the authors only consider a single repair server in the system, the model can easily be extended to allow multiple repair servers.
Starting Page	130
Ending Page	136
File Size	431622
Page Count	7
File Format	PDF
ISBN	0818619813
DOI	10.1109/RELDIS.1989.72757
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1989-10-10
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Availability Fault tolerance Fault tolerant systems Checkpointing Computer science Educational institutions Out of order Frequency Database systems Throughput
Content Type	Text
Resource Type	Article

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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