A server's RAID controller reports that its cache battery has failed, and disk write performance suddenly drops sharply. Why?
Le contrôleur RAID d'un serveur signale que sa batterie de cache est défaillante, et les performances d'écriture sur disque chutent brutalement. Pourquoi ?
Answers
AThe disks have all started failing at the same moment and must be replacedLes disques ont tous commencé à lâcher au même moment et doivent être remplacés
BThe battery was also powering the disks' motorsLa batterie alimentait aussi les moteurs des disques
CThe operating system has been downgradedLe système d'exploitation a été rétrogradé
DWithout cache protection, it switches from write-back to write-throughSans protection du cache, il passe de l'écriture différée (write-back) à l'écriture immédiate (write-through)
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