In a data center environment, what is an advantage of using parity-based RAID protection over mirroring?
A . Eliminates the write penalty for improving the performance
B. Improves the efficiency of logical disk drives in the RAID set
C. Increases the performance of small write I/O operation
D. Reduces the storage capacity required to protect the data
Parity-based RAID protection uses fewer physical drives than mirroring to provide the same level of data protection. It does this by using error correction codes to detect and correct errors in the data. This allows for a much more efficient use of storage capacity, as it only requires the same amount of storage capacity as the actual data, rather than requiring twice the storage capacity as with mirroring. Additionally, parity RAID systems have the advantage of being able to recover from drive failures without having to wait for the data to be rewritten to the remaining drives, as is the case with mirroring.
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