Glossary

access time

The amount of time, including seek time, latency, and controller time, necessary for a storage device to retrieve information.

active configuration

In S/390 mode, the director or switch configuration that is determined by the status of the connectivity attributes.

active field-replaceable unit

Active FRU. A FRU that is currently operating as the active, and not the backup FRU. See also backup field-replaceable unit.

active FRU

See active field-replaceable unit.

active port address matrix

In S/390 mode, an active port address matrix is the port address matrix that is currently active or operational on an attached director or switch. See also connectivity capability.

active zone set

A single zone set that is active in a multiswitch fabric and is created when a specific zone set is enabled. This zone set is compiled by checking for undefined zones or aliases. See also zone; zone set.

address

(1)To refer to a device or an item of data by its address (A, I). (2) The location in a computer where data is stored. (3) In data communication, the unique code assigned to each device or workstation connected to a network. (4) The identifier of a location, source, or destination (D).

address name

Synonym for port name.

agent

Software that processes queries on behalf of an application and returns replies.

alarm

(1)A notification of an abnormal condition within a system that provides an indication of the location or nature of the abnormality to either a local or remote alarm indicator. (2) A simple network management protocol (SNMP) message notifying an operator of a network or device problem.

alert panel

This panel, located below the navigation control panel, displays an alert symbol that indicates the current state of the switch.

alias

A nickname representing a world-wide name.