Technical data

Glossary-14 Brocade SilkWorm 4100 Hardware Reference Manual
Publication Number: 53-0000563-02
Gbit/sec Gigabits per second (1,062,500,000 bits/second).
GB/sec Gigabytes per second (1,062,500,000 bytes/second).
GLM Gigabit Link Module. A semitransparent transceiver that incorporates serializing/deserializing
functions.
GMT Greenwich Mean Time. An international time zone. Also known as "UTC."
GUI A graphic user interface, such as Brocade Advanced Web Toolsarbitrated-loop topology and Brocade
Fabric Manager.
H
HA High availability. A set of features in Brocade SilkWorm switches that is designed to provide maximum
reliability and nondisruptive replacement of key hardware and software modules.
half duplex A mode of communication that allows a port to either transmit or receive frames at any time except
simultaneously (with the exception of link control frames, which can be transmitted at any time). See
also full duplex.
hard address The AL_PA that an NL_Port attempts to acquire during loop initialization.
Hardware
Translative
Mode
A method for achieving address translation. There are two hardware translative modes available to a
QuickLoop enabled switch: Standard Translative Mode and QuickLoop Mode.
HBA Host bus adapter. The interface card between a server or workstation bus and the Fibre Channel
network.
HCPLD High-capacity PLD. Refers to both CPLDs and FPGAs.
header A Fibre Channel frame has a header and a payload. The header contains control and addressing
information associated with the frame.
HiPPI High-Performance Parallel Interface. An 800 Mbit/sec interface normally used in supercomputer
environments.
hop count The number of ISLs a frame must traverse to get from its source to its destination.
host A computer system that provides end users with services like computation and storage access.
hot swappable A hot swappable component can be replaced under power.
HSSDC High-speed serial data connection. A form factor that allows quick connections for copper interface.
HSSDC-2 A second-generation HSSDC connector.
HTTP Hypertext Transfer Protocol. The standard TCP/IP transfer protocol used on the World Wide Web.