[LUGOS] md array hecnosti

[Uroš Golja]

Metod Kozelj wrote:
>
> Temperature nad 40 stopinj so za diske (za razliko od procesorjev) že 
> precej visoke. Saj ne, da bi trpeli motorji ali elektronika, niso pa 
> dobre za trajnost magnetnega zapisa na samih ploščah.
>   

Vročina ubija, to je jasno. Vsak disk bo prej krepnil pri 80 kot pri 40 
stopinjah. Toda, kaj pa tisto vmes? Dokler nisem prebral te raziskave 
(http://labs.google.com/papers/disk_failures.html), sem tudi sam mislil, 
da tistih pet stopinj med 37 in 42 pomeni vsaj tri leta daljšo 
življenjsko dobo. Naj citiram fante, ki so spremljali delovanje na 
tisoče diskov:

"Surprisingly, we found that temperature and activity levels were much 
less correlated with drive failures than previously reported."

"One of our key findings has been the lack of a consistent pattern of 
higher failure rates for higher temperature drives or for those drives 
at higher utilization level. Such correlations have been repeatedly 
highlited by previous studies, but we are unable to confirm them by 
observing in our population."

Preberite in se čudite. Če pa vseeno ne prenesete pogleda na diske brez 
dodatnih hladilnih reber, potem vam svetujem takle sam-svoj-majstor 
hladilnik: http://www.overclockers.com/tips454

Dela čudeže!

LP,
U.