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Disk I/O Tuning

Chapter 2: Fibre Channel

Fibre Channel is designed to support both the transfer of large and small data sets. This allows it to be efficient in the transfer of a wide variety of data and therefore it can be used in systems ranging from supercomputers to individual workstations. Fibre Channel peripherals can include devices such as, but not limited to, disk drives, tape units, high-bandwidth graphics terminals, and laser printers. For our purposes we are concerned with disk drives.

In order to accommodate all of these device types with various command sets, Fibre Channel separates the physical I/O interface from the I/O operations. This allows the use of multiple command sets simultaneously. This separation of the physical I/O interface from the I/O operations allows new speeds and new functions to be added without negating all previous investments in existing components, connectors and cables.

Another advantage of Fibre Channel is that it supports both channel and network peripheral protocols for device communication. This means that channel and network protocols can share the same physical medium.


The above text is an excerpt from:

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

ISBN

0-9745993-4-4 

by Mike Ault
 


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