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Forum: Reliability & Maintainability Questions and Answers

Topic: Reliability & Maintainability Questions and Answers

Topic Posted by: Reliability & Maintainability Forum (src_forum@alionscience.com )
Organization: System Reliability Center
Date Posted: Mon Aug 31 12:47:36 US/Eastern 1998

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Original Message:

Posted by: Chetan Bhatt (bbchetan@cedt.iisc.ernet.in )
Organization:Center for Electronics Design & Technolgy
Date posted: Mon Jun 5 11:49:58 US/Eastern 2000
Subject: Software reliability versus hardware reliability
Message:
I want to know about the difference in Software reliability and hardware reliability modelling, prediction it application at different development stage.


Reply:

Subject: Software / Hardware Reliability Modeling
Reply Posted by: Jack Farrell (jfarrell@alionscience.com )
Organization: Reliability Analysis Center
Date Posted: Wed Jun 7 10:43:18 US/Eastern 2000
Message:
The failure rate of a piece of software is a function of the number and location of faults in the code, how fast the program is executed, and the operational profile. The failure rate of a hardware device is a function of the inherent quality, operational stresses, use environment, and operating profile. Modeling and prediction of software and hardware reliability should commence early in the design phase when design changes are easiest to implement.


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