Brocade Communications Systems 53-0001575-01 manual Hosts

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SAN Design: March 29, 2001 3:18 pm

FIGURE 2. Two Core Switch, Two ISL, Star Design.

The above SAN is a single fabric, resilient design. To deploy a dual fabric, resilient SAN based upon this architecture, the following SAN would be built

FIGURE 3. Dual Fabric Design, Hosts and Storage connection to Two Independent Fabrics:

Hosts and

Storage

Dual connections

No connection!

Redundancy builds in the ability to allow for SAN management to take place on one SAN while the other SAN stays in operation. For a site where high availability is mandatory and where significant down time cannot be tolerated this design approach is the most prudent.

When designing a fabric solution, consider using two redundant fabrics to provide the maximum flexibility in terms of SAN downtime and maintenance. This solution will allow for:

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