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First International Conference on Availability, Reliability and Security (ARES'06)
A System Architecture for Enhanced Availability of Tightly Coupled Distributed Systems
Vienna, Austria
April 20-April 22
ISBN: 0-7695-2567-9
ASCII Text
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J. Osrael, L. Froihofer, K. M. Goeschka, S. Beyer, P. Galdamez, F. Munoz, "A System Architecture for Enhanced Availability of Tightly Coupled Distributed Systems," Availability, Reliability and Security, International Conference on, pp. 400-407, First International Conference on Availability, Reliability and Security (ARES'06), 2006.
 
 
BibTex
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@article{ 10.1109/ARES.2006.19,
author = {J. Osrael and L. Froihofer and K. M. Goeschka and S. Beyer and P. Galdamez and F. Munoz},
title = {A System Architecture for Enhanced Availability of Tightly Coupled Distributed Systems},
journal ={Availability, Reliability and Security, International Conference on},
volume = {0},
year = {2006},
isbn = {0-7695-2567-9},
pages = {400-407},
doi = {http://doi.ieeecomputersociety.org/10.1109/ARES.2006.19},
publisher = {IEEE Computer Society},
address = {Los Alamitos, CA, USA},
}
 
 
RefWorks Procite/RefMan/Endnote
x 
 
TY - CONF
JO - Availability, Reliability and Security, International Conference on
TI - A System Architecture for Enhanced Availability of Tightly Coupled Distributed Systems
SN - 0-7695-2567-9
SP400
EP407
A1 - J. Osrael,
A1 - L. Froihofer,
A1 - K. M. Goeschka,
A1 - S. Beyer,
A1 - P. Galdamez,
A1 - F. Munoz,
PY - 2006
KW - null
VL - 0
JA - Availability, Reliability and Security, International Conference on
ER -
 
J. Osrael, Vienna University of Technology
L. Froihofer, Vienna University of Technology
K. M. Goeschka, Vienna University of Technology
S. Beyer, Universidad Politecnica de Valencia, Spain
P. Galdamez, Universidad Politecnica de Valencia, Spain
F. Munoz, Universidad Politecnica de Valencia, Spain

We present a system architecture which facilitates enhanced availability of tightly coupled distributed systems by temporarily relaxing constraint consistency.

Three different types of consistency are distinguished in tightly coupled distributed systems - replica consistency, concurrency consistency, and constraint consistency. Constraint consistency defines the correctness of the system with respect to a set of data integrity rules (application defined predicates). Traditional systems either guarantee strong constraint consistency or no constraint consistency at all. However, a class of systems exists, where data integrity can be temporarily relaxed in order to enhance availability, i.e. constraint consistency can be traded against availability. This allows for a context- and situation-specific optimum of availability.

This paper presents the basic concepts of the trading process and the proposed system architecture to enable a fine-grained tuning of the trade-off in tightly coupled distributed systems.

Citation:
J. Osrael, L. Froihofer, K. M. Goeschka, S. Beyer, P. Galdamez, F. Munoz, "A System Architecture for Enhanced Availability of Tightly Coupled Distributed Systems," ares, pp.400-407, First International Conference on Availability, Reliability and Security (ARES'06), 2006
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