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Lesson Summary

The following points summarize the main elements of this lesson:

• SCSI was introduced in 1979 as a system-independent means of mass storage.
• A SCSI chain is a series of devices that work through a host adapter.
• SCSI chains can have up to 8 devices, including the host adapter (or 16, depending on the configuration) connected together.
• SCSI chains must be terminated on both ends.
• SCSI is used with many different types of peripherals, including printers, scanners, hard disk drives, and tape units.
• Bus mastering is a method used by SCSI to transfer data independently of the CPU.
• RAID uses several SCSI hard disk drives to provide improved performance and fault tolerance for data storage.

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