Brocade Communications Systems 53-0001575-01 manual Topology

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SAN Design: March 29, 2001 3:18 pm

TABLE 1. Glossary of Fibre Channel and SAN Design Terminology

Term

Definition

 

 

 

 

Topology

As applies to fibre channel, the structure of the fibre channel network and the resulting possible communication paths.

 

There are three fibre channel topologies: point-to-point, fabric, and arbitrated loop.

 

 

Zone

Set of hosts and devices attached to same fabric and having access permission, including RSCNs and user data, to

 

each other. Entities inside a zone are not visible to entities outside the same zone, even if the outside entities are in

 

another zone.

 

 

Meshed Topology

Meshed Topology-- a network of switches that has at least one link to each adjacent switch. Fully meshed designs will have a connection from each switch in

 

the fabric to all other switches in the fabric. Other topologies are a specific instance of a mesh design.

 

 

Star Topology

Star Topology-- central switch(es) with some or all ports used to connect to other switches; edge switches connect only to the center switches

 

 

Tier Architecture

Tier Architecture -- a switch hierarchy of two or more levels with inter switch connections that assume data paths go from one side (hosts) to the other side

 

(targets).

 

 

53-0001575-01

BROCADE Technical Note

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Contents SAN Fabrics Design and Best Practices Guide Design and Best Practices Guide Fabric Topologies Tier Architecture Designs Single fabric, non-resilient Approach to take to SAN design for high availability Hosts Sample Switc H Configura Tions Two Fabrics -- Simplest Redundant Fabric Configuration Extended Fabric Example Numbers above are labels for the links, see text Design Guidance Edge Two Switch Core Star SAN Design Design Criteria /TESTED AN D Supported Configurations Star Topologies Possible with 2 switch cores Three Tier Design used in Fabric Aware Testing at Brocade MUlti Tier SAN Design across an Extended Link Twenty Switch Three Tier Design also a Star configuration FOS Fabric Bring UP Valid and Invalid Configurations using Inter Switch Links ZONING/NAME Space Switch HOP Coun T SAN MAN Agement NON Public Devic ES AN D Existin G FC-AL Disk Equipmen T Brocade Technical Note Glossary Gbic Topology Copyright