Leitura para a tarde de Domingo
Funcionários da Google apresentaram uma comunicação, numa conferência sobre tecnologias de armazenamento, intitulada "Failure Trends in a Large Disk Drive Population".
"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 levels. Such correlations have been repeatedly highlighted by previous studies, but we are unable to confirm them by observing our population."
"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 levels. Such correlations have been repeatedly highlighted by previous studies, but we are unable to confirm them by observing our population."
No entanto, "despite those strong correlations, we find that failure prediction models based on SMART parameters alone are likely to be severely limited in their prediction accuracy, given that a large fraction of our failed drives have shown no SMART error signals whatsoever."
Ou seja, embora o sistema de monitorização de discos rígidos SMART acuse muitas vezes erros quando, na realidade, nada de fatalmente anormal se passa com o disco (tenho um disco cujo SMART acuso, há já alguns anos, repetidamente erros e este funciona perfeitamente), há parâmetros que podem indiciar uma falha iminente.
"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 levels. Such correlations have been repeatedly highlighted by previous studies, but we are unable to confirm them by observing our population."
"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 levels. Such correlations have been repeatedly highlighted by previous studies, but we are unable to confirm them by observing our population."
No entanto, "despite those strong correlations, we find that failure prediction models based on SMART parameters alone are likely to be severely limited in their prediction accuracy, given that a large fraction of our failed drives have shown no SMART error signals whatsoever."
Ou seja, embora o sistema de monitorização de discos rígidos SMART acuse muitas vezes erros quando, na realidade, nada de fatalmente anormal se passa com o disco (tenho um disco cujo SMART acuso, há já alguns anos, repetidamente erros e este funciona perfeitamente), há parâmetros que podem indiciar uma falha iminente.
colocado por IAS às 19:00
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