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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: Lanny Gerber (c.lanny.gerber@l-3com.com )
Organization:L-3 Communications
Date posted: Wed Aug 8 11:13:07 US/Eastern 2001
Subject: MSBF
Message:
How is Mean Swaps Between failure calculated ? This seems to be the new marketing term.


Reply:

Subject: Re: MSBF
Reply Posted by: Richard Smith (atari_400@hotmail.com )
Date Posted: Wed Aug 8 13:03:22 US/Eastern 2001
Message:
I believe that MSBF applies mainly to devices having interchangeable media. For example, it is the mean number of times a floppy disk can be changed in a floppy disk drive before the drive fails. Anybody please feel free to correct me if I am wrong. Richard.


Reply:

Subject: MSBF (mean swaps between failure)
Reply Posted by: B.W.Dudley (bdudley@alionscience.com )
Organization: Reliability Analysis Center
Date Posted: Wed Aug 8 15:00:13 US/Eastern 2001
Message:
The specific type of equipment that the term Mean-Swaps-Between-Failure seems to be applied to is large magneto-optical jukebox storage devices. The term is experssed in MSBF rating of "X" cycles to indicate the ruggedness of the mechanical robotics. This term is really a subjective use of a "mean" term when they really should express the term as a life limiting function, that is, number of hours or cycles or operations before wear-out failure.


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