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Disk duplexing is where you're writing data to 2 or more disks, with each disk using its own controller. If one disk fails, the other disk continues to operate with no data loss. Even if you lose the disk controller, it is not a problem since you're using a separate controller for the other disk. It is considered an variation of RAID 1 disk mirroring.

Disk striping does not duplicate data as in disk duplexing. It writes (stripes) data across 3 or more disks but uses parity checking for each disk. If one disk fails, the other drives can recreate the data stored on the failed one. It is considered RAID 5 level.

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Q: What is the difference between disk duplexing or disk striping with parity?
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