OT: Spolehlivost PC HW - pro zajimavost

[mjfox@centrum.cz]

Nepisou tam o _dvou_ poruchach, ale jen o poruchach. Spis by se to dalo chapat jako od zahajeni provozu do 1. poruchy.

P.K.
______________________________________________________________
> Od: prochaska@alsoft.cz
> Komu: hw-list@list.hw.cz
> CC: 
> Datum: 11.08.2005 16:14
> Předmět: Re: OT: Spolehlivost PC HW - pro zajimavost
>
> A ono i to "mezi dvema poruchami" je zavadejici. Takovy mainborad se
> poroucha jen jednou :-)
> 
> Ales Prochaska
> 
> >> Nahodou jsem narazil v nejakem PDFku ze stranek intelu - Technical
> >> reference k mainboardu D845BG/PT - na nasledujici text:
> 
> >> 2.13 Reliability
> >> The Mean Time Between Failures (MTBF) prediction is calculated using
> component and
> >> subassembly random failure rates. The calculation is based on the
> Bellcore Reliability Prediction
> >> Procedure, TR-NWT-000332, Issue 4, September 1991. The MTBF prediction
> is used to estimate
> >> repair rates and spare parts requirements.
> >> The MTBF data is calculated from predicted data at 55 şC. The MTBF
> calculations for the boards
> >> are as follows:
> >> D845BG board MTBF: 140818.2951 hours
> >> D845PT board MTBF: 143991.3836 hours
> 
> >> MTFB je cesky zrejme "stredni doba mezi poruchami". Pokud si hodiny
> >> prepocitam na roky, vychazi mi 16 let. Cucaj si ty cisla z prstu? To
> >> fak zivostnost mainboardu je celych 16 let? Tak dlouho snad nevydrzi
> >> ani kondiky ve zdroji pro CPU... (no mozna vydrzi, ale budou mit
> >> mensi kapacitu / vetsi svod a CPU se bude napriklad kousat...).
> 
> >> P.K.
> 
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> 
> 
> 
> 
> 
> 
> -- 
> Best regards,
> Ales mailto:prochaska@alsoft.cz
> 
> 
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