Dell Brocade G620 Brocade 8.0.1 Fabric OS Administratiors Guide - Page 445
Fabric-Assigned PWWN, Fabric-Assigned PWWN overview
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Fabric-Assigned PWWN ∙ Fabric-Assigned PWWN overview...445 ∙ User- and auto-assigned FA-PWWN behavior ...446 ∙ Configuring an FA-PWWN for an HBA connected to an Access Gateway 447 ∙ Configuring an FA-PWWN for an HBA connected to an edge switch 447 ∙ Supported switches and configurations for FA-PWWN...448 ∙ Configuration upload and download considerations for FA-PWWN 449 ∙ Security considerations for FA-PWWN...449 ∙ Restrictions of FA-PWWN...449 ∙ Access Gateway N_Port failover with FA-PWWN...450 Fabric-Assigned PWWN overview Fabric-Assigned PWWN simplifies server deployment in a Fibre Channel SAN (FC SAN) environment by using a virtual port World Wide Name (PWWN) instead of a physical PWWN to configure zoning and LUN mapping and masking. Server deployment typically requires that multiple administrative teams (for example, server and storage teams) coordinate with each other to perform configuration tasks such as zone creation in the fabric and LUN mapping and masking on the storage device. These tasks must be completed before the server is deployed. Before you can configure WWN zones and LUN masks, you must find out the physical PWWN of the server. This means that administrative teams cannot start their configuration tasks until the physical server arrives (and its physical PWWN is known). Because the configuration tasks are sequential and interdependent across various administrative teams, it may take several days before the server gets deployed in an FC SAN. You can use a fabric-assigned PWWN (FA-PWWN) to configure services such as zoning and LUN masking before you have a physical server. An FA-PWWN is a "virtual" port WWN that can be used instead of the physical PWWN. When the server is later attached to the SAN, the FA-PWWN is assigned to the server. For example, you can use the FA-PWWN feature to perform the following tasks: ∙ Replace one server with another server, or replace failed HBAs or adapters within a server, without having to change any zoning or LUN mapping and masking configurations. ∙ Easily move servers across ports or Access Gateways by way of reassigning the FA-PWWN to another port. ∙ Use the FA-PWWN to represent a server in boot LUN zone configurations so that any physical server that is mapped to this FA-PWWN can boot from that LUN, thus simplifying boot over SAN configuration. NOTE The server must use a supported HBA or adapter and must be enabled to use the FA-PWWN feature. Refer to the release notes for the HBA or adapter versions that support this feature. You can configure an FA-PWWN for the following topologies: ∙ An FA-PWWN for an HBA device that is connected to an Access Gateway switch ∙ An FA-PWWN for an HBA device that is connected directly to an edge switch Brocade Fabric OS Administration Guide, 8.0.1 53-1004111-02 445
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