SCSI (Small Computer Systems Interface) is a parallel interface standard used in Amiga systems for connecting high-performance peripherals, particularly hard drives and CD-ROM drives. Unlike the contemporary IDE interface, SCSI offered superior data transfer rates, supported up to seven devices on a single bus, and was the preferred storage solution for professional Amiga workstations. Commodore implemented SCSI natively in the Amiga 3000 using a Western Digital WD33C93A controller, while earlier models such as the A2000 required dedicated controller cards like the Commodore A2090. The protocol's efficiency and speed made SCSI essential for demanding applications including video editing and 3D rendering, providing better multitasking performance than IDE alternatives.