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Which of the following is a benefit of ASM fast disk resync？（）  
A: Failed disks are taken offline immediately but are not dropped.
B: Disk data is never lost.
C: By default， the failed disk is not dropped from the disk group ever， protecting you from loss of that disk.
D: The failed disk is automatically reformatted and then resynchronized to speed up the recovery process.
E: Hot spare disks are automatically configured and added to the disk group.

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出自：Oracle认证

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