HP StorageWorks 4/16 Brocade SAN Glossary for Fabric OS v6.0.0 - Page 5

Class F CLS Controlled port Community Compact flash Condor Congestion Controller Core PID COS CRC Credit CRU Cut-through D D_ID Dark fiber DAS A connectionless class of service that gives notification of delivery or nondelivery between E_Ports, used for control, coordination, and configuration of the fabric. Close Primitive Signal. Only in an Arbitrated Loop; sent by an L_Port that is currently communicating on the loop, to close communication to another L_Port. A port that fulfils one of the following conditions: a) is a member of an AD, either explicitly assigned or part of AD0 or b) the switch to which the port belongs is a member of an AD. A relationship in SNMP between an SNMP agent and a set of SNMP managers that defines authentication, access control, and proxy characteristics. Flash (temporary) memory that is used in a manner similar to hard disk storage. It is connected to a bridging component which connects to the PCI bus of the processor. Not visible within the processor's memory space. The code name given to the Brocade 4 Gbit/sec ASIC. This ASIC is used in Brocade switches and directors. The realization of the potential of over-subscription. A congested link is one on which multiple devices actually are contending for bandwidth. A computer module that interprets signals between a host and a peripheral device. The controller typically is part of the peripheral device. The default PID mode for Brocade 200E, 3016, 3250, 3850, 3900, and 4100 switches and Brocade directors. It uses the entire 8-bit address space and directly uses the port number as the area_ID. Class of service. Cyclic Redundancy Check. A self-test for error detection and correction. A numeric value that represents the maximum number of receive buffers provided by an F/FL_Port to its attached N/NL_Port such that the N/NL_Port can transmit frames without overrunning the F/FL_Port. Customer Replaceable Unit. A component that can, upon failure, be replaced by an end user. A switching technique that allows a routing decision to be made as soon as the destination address of the frame is received. Destination identifier; a 3-byte field in the frame header used to indicate the address identifier of the N_Port to which the frame is headed. A leased fiber optic cable running between sites characterized by not having a service provided on the wire by the leasing company; all services are provided by the customer. Direct-Attached Storage. Brocade SAN Glossary 1/29/2008 Page 5 of 29