Technical data

Glossary-16 Fabric OS Administrator’s Guide
Publication Number: 53-0000518-09
SAN
architecture
The overall design of a storage network solution, which includes one or more related fabrics, each of
which has a topology.
SAN port
count
The number of ports available for connection by nodes in the entire SAN.
SCN State change notification. Used for internal state change notifications, not external changes. This is the
switch logging that the port is online or is an Fx_port, not what is sent from the switch to the Nx_ports.
SCR State change registration. Extended Link Service (ELS) requests the fabric controller to add the N_Port
or NL_Port to the list of N_Ports and NL_Ports registered to receive the Registered State Change
Notification (RSCN) Extended Link Service.
SCSI Small Computer Systems Interface. A parallel bus architecture and a protocol for transmitting large data
blocks to a distance of 15 to 25 meters.
sectelnet A protocol similar to telnet but with encrypted passwords for increased security.
Secure Fabric
OS
A separately sold Brocade feature that provides advanced, centralized security for a fabric.
security policy Rules that determine how security is implemented in a fabric. Security policies can be customized
through Brocade Secure Fabric OS or Brocade Fabric Manager.
SEQ_ID Sequence identifier. A 1-byte field in the frame header change to identify the frames as being part of a
particular exchange sequence between a pair of ports.
sequence A group of related frames transmitted in the same direction between two N_Ports.
sequence
initiator
The N_Port that begins a new sequence and transmits frames to another N_Port.
sequence
recipient
Serializing/deserializing circuitry. A circuit that converts a serial bit stream into parallel characters, and
vice-versa.
SES SCSI Enclosure Services. A subset of the SCSI protocol used to monitor temperature, power, and fan
status for enclosed devices.
SFP Small-form-factor pluggable. A transceiver used on 2 Gbit/sec or 4Gbit/sec switches that replaces the
GBIC.
SilkWorm The brand name for the Brocade family of switches.
Simple Name
Server (SNS)
A switch service that stores names, addresses, and attributes for up to 15 minutes and provides them as
required to other devices in the fabric. SNS is defined by Fibre Channel standards and exists at a well-
known address. Also referred to as "directory service" or "name server."
Single CP
Mode
The -s option of the firmwaredownload command. Using firmwaredownload -s enables Single CP
Mode. In the SilkWorm 12000, Single CP Mode enables a user to upgrade a single CP blade and to
select full-install, auto-reboot, and auto-commit.