OT: Spolehlivost PC HW - pro zajimavost

[Ales Prochaska]

MTBF muze byt klidne delsi nez zivotnost. Je to jen zpusob vyjadreni
pravdepodobnosti poruchy. Kdyz budete mit 140818.2951 boardu tak se
prumerne kazdou hodinu jeden poroucha.

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