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C850 - CLARiiON Fibre Implementation and Troubleshooting
Copyright © 2004 EMC Corporation. All Rights Reserved. Version 2.2
© 2004 EMC Corporation. All rights reserved.
11
Fibre Channel Basics
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C850 - CLARiiON Fibre Implementation and Troubleshooting
Copyright © 2004 EMC Corporation. All Rights Reserved. Version 2.2
© 2004 EMC Corporation. All rights reserved.
22
Lesson Objectives
z Define how Fibre Channel differs from SCSI
z Define Point to Point (direct) and Arbitrated Loop
Topologies
z Describe various Fibre Cables
Upon completion of this module students will be able to explain the components,
configuration commands, and operations of a Fibre Channel environment.
Page 2-3
C850 - CLARiiON Fibre Implementation and Troubleshooting
Copyright © 2004 EMC Corporation. All Rights Reserved. Version 2.2
© 2004 EMC Corporation. All rights reserved.
33
Fibre Channel Vs. SCSI
Supported Protocols
SCSI, TCP/IP, VI and IPI, HIPPI
Interconnected Devices
126 (Arbitrated Loop)
16 Million (Fabric)
Cable Distance
Copper: 5-20m
Fiber: 150m-10km
Serial interface
100-200 MB/sec
Always at Max Throughput
Fibre Channel
Supported Protocols
SCSI (downward compatible)
Interconnected Devices
16
Cable Distance
Single-Ended: 3m
Differential: 25m Max.
Parallel interface
various
Speed Achieved in Bursts
SCSI
FC
Serial interface
data can be transferred over a single piece of medium at the fastest speed the medium
is capable of supporting.
SCSI
Parallel interface
data is transferred over multiple pieces of medium (wires) simultaneously.
A parallel transfer is typically clocked at a much slower speed than can be achieved
on a serial transfer in order to ensure the capture of the data at the far end of the cable
and to prevent data corruption.