多项选择题
A server configured with RAID 5 has recently suffered from two simultaneous disk failures. Which of the following would be required to bring the server back to operational status？ （）
A. Break mirror array
B. Replace cache battery
C. Replace hot standby
D. Restore from backup
E. Replace defective hard drives
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WhichofthefollowingprovidestheMOSTstoragecapacitywithoutfaulttolerance？（）
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