Installation guide

Glossary-30 Sun StorEdge SAN 4.0 Release Installation Guide, July 2002
FC-SW-2 The second generation of the Fibre Channel Switch Fabric Standard defined by
ANSI.
G_Port Generic port; a port that can operate as either an E_port or F_port. A port is
defined as a G_port when it is not yet connected or has not yet assumed a
specific function in the fabric.
Initiator Each host bus adapter port connection that provides a path to a storage device.
An active initiator provides a path that is online. An inactive initiator provides
a standby path when the Sun StorEdge Traffic Manager software is enabled.
Inter-Switch Link
(ISL) A segment or cable connecting two cascaded switches. Does not include cables
from host to the switch or from storage devices to the switch.
N_Port A Fibre Channel port that supports point-to-point or Fabric connections.
Name Server Zones (NS
zones) A set of name server (NS) ports that can contain F_, FL_, G_, GL_ and E_Ports.
The ports receive name server information (port number, type, address, WWN,
etc). NS zones can be port-based or WWN-based.
Private Loop Fibre Channel Arbitrated Loop (FC-AL) with 8-bit addressing that supports up
to 126 device connections with no fabric attachment (F and FL ports). Private
loops are closed systems incapable of seeing outside the loop.
Public Loop Arbitrated loop that supports Fabric login and services. Provides 24-bit Fibre
Channel addressing and up to 16 million node connections fabric wide. Uses
name server (NS) ports.
Segmented Loop Ports
(SL_Ports)
A port connected to a private loop device. SL_ports make a switch behave
like a hub, but with the advantage of better performance and the ability to
segment the private loop into SL Zones for ease of administration and isolation
of resources. Ports in SL zones do not communicate with ports in NS zones.
Supports the Sun StorEdge A5200, A3500FC arrays and FC tape devices. SL
zones contain SL-Ports only.
Segmented Loop Zones
(SL zones) A set of SL_ports on the switch that behave as a single private loop. This
grouping behaves like a hub, but with the advantage of better performance
and the ability to segment the private loop into SL zones for ease of
administration and isolation of resources.
Transfer or Trunk Ports
(T_Ports) Switch ports from the SAN 3.0 release used to connect to other switches in a
cascade. T_ports are used to attach a port on one switch to a port on another
switch. Replaced by E_ports in SAN 4.0 release.