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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: Ian (ianc49@hotmail.com )
Date posted: Wed Nov 28 4:36:10 US/Eastern 2001
Subject: Typical MTBF Values
Message:
On pg 54 of the Reliabilty Toolkit: CPE, there is a table of typical MTBF values for computer equipment. Are these figures overly pessimistic? If so is there a source of information that will provide more accurate values. (Not all manufacturers are helpful when asking for this information. I would be grateful if anybody could provide me with the numbers. Thanks in advance.


Reply:

Subject: Computer Equipment MTBF 's
Reply Posted by: William H. Crowell (wcrowell@alionscience.com )
Organization: Reliability Analysis Center (RAC)
Date Posted: Wed Nov 28 5:15:30 US/Eastern 2001
Message:
The Reliability Analysis Center (RAC) does offer MTBF numbers in a tool called SELECT and also it's NonElectronic Parts Reliability Data NPRD I would suggest that you obtain this tool and use it in conjunction with calling the manufacturer and asking for the exact Model Manufacturers data. This will give you an overview of an MTBF number for a equipment description as a general data point, and also a exact match from the manufacturer in relationship to the Equipment Model Number that you are using.


Reply:

Subject: failure rates
Reply Posted by: don miller (dmiller897@aol.com )
Date Posted: Sat Dec 8 19:16:48 US/Eastern 2001
Message:
These number mean nothing. All MTBF preditions mean nothing. They never had any meaning and never will. It took me several years to realize this truth. I got sucked up in to failure rate as a young OR applied math engineer. WOW did I have fun. Ran around the country presenting magic. Just give me an MTBF. Bad Please take some time and explore any so called source of data. you will soon learn. dmiller897@aol.com


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