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Storage Networking Fundamentals: An Introduction to Storage Devices, Subsystems, Applications, Management, and Filing Systems by Marc Farley

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The Architecture and Logic of SCSI

The SCSI communications architecture is a logical system of commands and responses exchanged between systems and storage, encompassing such things as addressing, naming, and error-correction procedures. The primary role of the SCSI architecture is to provide a reliable abstraction layer between systems and storage devices. Without a storage abstraction layer, every application would need to incorporate details about the operations of every storage device used with it. This situation would clearly be unacceptable, so it was necessary for the computer and storage industries to develop standard interfaces for both systems and storage devices. SCSI was developed as a standard storage abstraction for open-systems ...

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