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Upgrading and Repairing Servers by Barrie Sosinsky, Mark Edward Soper, Scott Mueller

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Chapter 7 The SCSI Bus

Small Computer System Interface (SCSI; pronounced "scuzzy") is a general-purpose interface used for connecting many types of devices to a PC. This interface has its roots in SASI (Shugart Associates System Interface). SCSI is very flexible; it is not just a disk interface, but is a systems-level interface that allows many types of devices to be connected, including scanners and printers. SCSI's primary use today is as a host adapter for high-performance hard disk, tape-backup, and RAID arrays on servers.

SCSI is a bus that supports as many as 7 or 15 total devices. Multichannel adapters exist that can support up to 7 or 15 devices per channel. The SCSI host adapter might be installed as a PCI or as a PCI-Express card, or ...

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