SCSI
Short for Small Computer System Interface, SCSI, pronounced as "Scuzzy", is the second most commonly used interface for disk drives that was first completed in 1982. Unlike competing standards, SCSI is capable of supporting eight devices, or sixteen devices with Wide SCSI. However, with the SCSI host adapter located on ID number 07 and boots from the ID 00. This leaves the availability of six device connections.
SCSI-1 is the original SCSI standard developed back in 1986 as ANSI X3.131-1986. SCSI-1 is capable of transferring up to eight bits a second.
SCSI-2, approved in 1990, added new features such as Fast and Wide SCSI, and support for additional devices.
SCSI-3 was approved in 1996 as ANSI X3.270-1996.
SCSI is a standard for parallel interfaces that transfers information at a rate of eight bits per second and faster, which is faster than the average parallel interface. SCSI-2 and above supports up to seven peripheral devices, such as a hard drive, CD-ROM, and scanner, that can attach to a single SCSI port on a system's bus. SCSI ports were designed for Apple Macintosh and Unix computers, but also can be used with PCs. Although SCSI has been popular in the past many users are switching over to SATA drives.
SCSI connectors
The below illustrations are examples of some of the most commonly found and used SCSI connectors on computers and devices and illustrations of each of these connections.
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Also see: Cable, Connection, Fast Wide SCSI, Hard disk drive definitions, Initiator, Phases, SAS, SCSI bus, SCSI cable, SCSI chain, SCSI device, SCSI-to-SCSI cable, Terminate, Ultra SCSI