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1. The technique of duplicating data across multiple disks in a RAID array for increased redundancy.
2. A RAID configuration that provides mirroring for data redundancy, sacrificing some storage capacity for fault tolerance.
3. A RAID configuration that combines mirroring and striping for both performance and redundancy benefits.
4. A RAID configuration that offers striping without redundancy, providing improved performance but no fault tolerance.
5. A RAID configuration that uses striping with distributed parity for improved performance and fault tolerance.