HP StorageWorks 2/64 HP StorageWorks Fabric OS 5.x Master Glossary (AA-RW7NA-T - Page 5

BER BISR BIST bit synchronization blind-mate connector block boot code boot flash bport broadcast buffer-to-buffer flow control bypass circuitry CA CAM CAN cascade CDR CE CFG Bit error rate. The rate at which bits are expected to be received in error. Expressed as the ratio of error bits to total bits transmitted. See also error. Built-in self-repair. Built-in self-test. The condition in which a receiver is delivering retimed serial data at the required bit error rate. A two-way connector used in some HP StorageWorks switches to provide a connection between the motherboard and the power supply. As it applies to Fibre Channel technology, upper-level application data that is transferred in a single sequence. Software that initializes the system environment during the early phase of the boot-up process. For example, boot code might determine the amount of available memory and how to access it. Flash (temporary) memory that stores the boot code. Back-end port of the ASIC. The transmission of data from a single source to all devices in the fabric, regardless of zoning. See also multicast and unicast. Management of the frame transmission rate in either a point-to-point topology or in an arbitrated loop. See also BB_Credit. Circuits that automatically remove a device from the data path when valid signals are dropped. Certificate authority. A trusted organization that issues digital certificates. See also digital certificate. Content-addressable memory. A memory chip in which each bit position can be compared. In regular dynamic RAM (DRAM) and static RAM (SRAM) chips, the contents are addressed by bit location and then transferred to the CPU for comparison. In CAM chips, the content is compared in each bit cell, allowing for very fast table lookups. Since the entire chip is compared, the data content can often be stored randomly without regard to an addressing scheme, which would otherwise be required. CAM chips are considerably smaller in storage capacity than regular memory chips. Also called associative storage. Campus area network. A network comprising a limited area but not just one building. See also LAN, MAN, and WAN. Two or more interconnected Fibre Channel switches. HP StorageWorks 1 GB and greater switches can be cascaded up to 239 switches, with a recommended maximum of seven interswitch links (no path longer than eight switches). See also fabric and ISL. Clock and data recovery circuitry. Conformité Européenne (European Conformity). A conformity marking for products that satisfy the essential requirements and safety regulations for the European Economic Area. It is a mandatory safety marking for the European market. See configuration. Fabric OS 5.x master glossary 5