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单选题
Which of the following is a benefit of a hot spare？（）
A
Lower cost
B
Allows two RAID 1 drives to simultaneously fail without losing any data
C
Enhanced fault tolerance
D
Enhanced performance
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单选题Which of the following MOST correctly describes a hot spare？（）A
A drive assigned to an array that will only hold parity information used for rebuilding a failedarray drive.B
An external hard drive to which all data is replicated to for recovery in the event of a failure.C
A drive assigned to an array that will automatically be used to rebuild a failed array drive.D
An extra drive purchased and stored in the parts cabinet to replace failed drives.
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The DIMM is taken off line， and fault tolerance is available on the other DIMMs only.B
The memory bank is taken offline and rebuilt with the online hot spare and then brought back on line.C
The memory bank containing the failed DIMM is taken off line， and the system is no longer fault tolerant until replaced.D
The DIMM is taken offline， and the online hot spare is initiated and the system remains fault tolerant.
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Plug and PlayB
Warm siteC
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Failed disks are taken offline immediately but are not dropped.B
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reliabilityC
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Redundant power supplies with each connected to a separate power circuit.C
Redundant power supplies connected via a Y-cable.D
Redundant power supplies with each connected to the same power circuit.
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