Which of the following RAID standards distributes data across multiple disks in a way that gives improved speed at any given instant?

RAID 01 combines mirroring and striping to prioritize fault tolerance alongside some performance gain, but its primary design goal is redundancy rather than achieving the absolute maximum I/O speed.

RAID 3 and RAID 4 use a dedicated parity disk, which becomes a write bottleneck because every write operation must update that single parity disk, significantly limiting overall throughput compared to RAID 0.

RAID 1 duplicates data identically across two disks for redundancy, offering no write speed benefit and only marginal read improvement - it does not distribute data for parallel access the way RAID 0 does.

RAID 0 splits data into blocks and writes them simultaneously across two or more disks, enabling parallel I/O operations that maximize throughput and access speed. Because every disk participates in every operation, performance scales linearly with the number of disks in the array. However, RAID 0 provides zero redundancy - a single disk failure results in total data loss across the entire array.