By Topic

Flexible fault tolerance for distributed computer systems

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $31
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

2 Author(s)
Loques, O.G. ; Pontificia Universidade Cat¿¿lica do Rio de Janeiro, Department of Electrical Engineering, Rio de Janeiro, Brazil ; Kramer, J.

Many applications have a need for different degrees of fault tolerance in the same system. The paper presents the software architecture of a fault-tolerant distributed system which supports both cold and hot standby redundancy of selected software modules. Cold standby modules are created and activated by the system in order to replace failed modules, but no state information is preserved. Hot standby modules do preserve state information and provide transparent recovery from failures. A technique is used that allows modules to be programmed without fault-tolerance in mind; afterwards they can be transformed in order to achieve that capability. These two types of redundancy are supported by common mechanisms which provide for detection of failures and reconfiguration of the software modules of the application. Reconfiguration is also used to recover the reliability of the system by providing further standby modules to replace failed ones. We believe that this approach provides a simple, flexible, and practical approach for the provision of fault tolerance in distributed embedded systems.

Published in:

Computers and Digital Techniques, IEE Proceedings E  (Volume:133 ,  Issue: 6 )