HP StorageWorks 4/16 Brocade SAN Glossary for Fabric OS v6.0.0 - Page 1

STORAGE AREA NETWORK Brocade SAN Glossary A ABTS ACC Access fairness Access method ACK Active copper Adaptive Networking AD0 AD255 AD zone database Address identifier Abort Basic Link Service. Accept link service reply; the normal reply to an Extended Link Service request (such as FLOGI), indicating that the request has been completed. A process by which contending nodes are guaranteed access to an Arbitrated Loop. The method used to access a physical medium in order to transmit data. Acknowledgement frame. Used for end-to-end flow control; verifies receipt of one or more frames from Class 1, 2 or F services. A Fibre Channel connection that allows copper cabling up to 33 m (108 ft) in length between devices. A suite of fabric services introduced in Fabric OS 6.0 that employ deep fabric intelligence to anticipate congestion and to dynamically make adjustments in the fabric so that application traffic continues to flow. See also QoS, Ingress Rate Limiting, and Traffic Isolation. A special administrative domain. When an AD-capable switch is first added to a fabric, all relevant resources of the fabric (switches, ports, devices) become its members automatically. These resources are put in an implicit list as defined later. When members are added to AD0 explicitly they become part of the explicit list as fixed members. An administrative domain that allows users to get an unfiltered view of the fabric and manage ADs. Corresponds to the legacy physical fabric in a nonAD aware fabric. The zone database owned by each AD. Once Fabric OS 5.2.0 and later is installed, the root zone database will be owned by AD0, and each AD will have its own zone database. A 24-bit number used to indicate the link-level address of communicating devices. In a frame header, the address identifier indicates the source ID (S_ID) and the destination ID (D_ID) of the frame respectively. Brocade SAN Glossary 1/29/2008 Page 1 of 29