Technical data

Brocade SilkWorm 4100 Hardware Reference Manual Glossary-27
Publication Number: 53-0000563-02
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.
serial The transmission of data bits in sequential order over a single line.
server A computer that processes end-user applications or requests.
service rate The rate at which an entity can service requests. See also request rate.
SES SCSI Enclosure Services. A subset of the SCSI protocol used to monitor temperature, power, and fan
status for enclosed devices.
SFF Small-form-factor. An industry term for a smaller transceiver. See SFP.
SFP Small-form-factor pluggable. A transceiver used on 2 GB/sec switches that replaces the GBIC.
SFP cable A cable specifically designed for use with an SFP. Not compatible with GBICs.
SI Sequence initiative.
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 Fabric OS firmwaredownload command. Using firmwaredownload -s enables
Single CP Mode. In the SilkWorm 12000, Single CP Mode enables a user to upgrade a single CP and to
select full install, autoreboot, and autocommit.
Single Mode The fiber-optic cabling standard for devices up to 10 km apart.
S-Link Service Facilities used between an N_Port and the fabric, or between two N_Ports, for login, sequence/
exchange management, and maintaining connections.
SLAP Switch Link Authentication Protocol.
SLP Service Location Protocol.
SMDS Switched Multimegabit Data Service. A good protocol for interconnecting LANs; however, SMDS has
less error-checking capability than Frame Relay.
SMF Single-mode fiber. See LWL.
SMI Storage Management Initiative. A broad-based initiative sponsored by the Storage Networking Industry
Association (SNIA) to standardize all aspects of storage management for multivendor storage
networking products.