单选题Which of the following can help prevent data loss on a RAID array in the event of a power failure？（）AUsing a RAID mirrorBA battery backed write cacheCUsing RAID with parityDA battery backed read cache
单选题
Which of the following can help prevent data loss on a RAID array in the event of a power failure？（）
A
Using a RAID mirror
B
A battery backed write cache
C
Using RAID with parity
D
A battery backed read cache
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