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edge switch 2/16 service manual Glossary–53
Glossary
wrap plug
Synonym for loopback plug.
wrap test
A test that checks attachment or control unit circuitry, without checking the mechanism itself,
by returning the output of the mechanism as input. A wrap test can transmit a specific
character pattern through a system and compare the pattern received with the pattern
transmitted (D).
write authorization
Permission for an simple network management protocol (SNMP) management station with the
proper community name to modify writable management information base (MIB) variables.
WWN
See world-wide names.
Z
zip drive
A high capacity floppy disk and disk drive developed by the Iomega Corporation. Zip disks
are slightly larger than conventional floppy disks. The storage capacity for zip disks is
between 100 and 250 MB of data. The zip drive and disk is used for backing up the HAFM
server, and is located on the communications tray behind the HAFM server.
zone
Set of devices that can access one another. All connected devices may be configured into one
or more zones. Devices in the same zone can see each other. Those devices that occupy
different zones cannot. See also active zone set; zone set; zoning.
zone member
Specification of a device to be included in a zone. A zone member can be identified by the port
number of the director or switch to which it is attached or by its port world-wide name
(WWN). In multiswitch fabrics, identification of end-devices or nodes by WWN is preferable.
zone set
A collection of zones that may be activated as a unit. See also active zone set; zone.
zoning
Grouping of several devices by function or by location. All devices connected to a
connectivity product, such as the director or switch, may be configured into one or more
zones. See also access control; zone.