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Disk I/O Tuning

Chapter 2: Fibre Channel


All Fibre Channel devices are called nodes. This is a generic term describing any device (workstation, printer, disk drive, scanner, etc.) connected to a Fibre Channel topology. Each node has at least one port, called an N_Port to provide access to other nodes. The “N” in N_Port stands for node. As you will see later, ports used in a Fibre Channel Arbitrated Loop topology are called NL_Ports where the “NL” stands for node loop.

The components that connect two or more node ports together are what are collectively called a topology. Nodes work within the provided topology to communicate with all other nodes.

The above text is an excerpt from:

Oracle Disk I/O Tuning
Disk IO Performance & Optimization for Oracle Databases



by Mike Ault

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