What is a SCSI drive?

SCSI stands for Small Computer Systems Interface, which is widely used in medium and large systems. SCSI is an industry-standard interface and generally offers faster transfer rates than does ATA/IDE, the interface most commonly used in desktop PCs. In general, ATA/IDE is considered easier to implement and less expensive but does not offer as many features as SCSI. SCSI can support both the connection of many devices and the connection of many devices over long distances.