单选题Which of the following offers the MOST redundancy for a system but is also very costly?()ARAID implementationBDisk-to-disk replicationCServer-to-server clusteringDHot site replication

单选题
Which of the following offers the MOST redundancy for a system but is also very costly?()
A

RAID implementation

B

Disk-to-disk replication

C

Server-to-server clustering

D

Hot site replication


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