Disk striping occurs when data is:

Duplicating data on separate disks describes mirroring (RAID 1), which provides redundancy, not striping.

Duplicating data on the same disk is not a standard RAID concept and would not offer the performance or redundancy benefits of RAID.

While data is shared in a sense by being distributed, 'shared between disks' is too vague and does not accurately describe the specific mechanism of striping, which is writing data in segments across disks.

Disk striping, commonly implemented as RAID 0, is a storage technique that divides data into blocks and distributes these blocks sequentially across multiple physical disks. This parallel writing improves performance by allowing data to be read from or written to several disks simultaneously.