HP StorageWorks XPath OS 7.4.X Command Reference Guide (AA-RVHCC-TE, September 2005)

298
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 also SFP.
SFP Small-form-factor pluggable. A transceiver used on 2 GB/s switches that replaces the GBIC.
SFP cable A cable specifically designed for use with an SFP. Not compatible with GBICs.
SI Sequence initiative.
Simple Name Server See SNS.
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.
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 also LWL.
SMI Structure of management information. A notation for setting or retrieving SNMP management
variables.
SNA/SDLC Systems Network Architecture/Synchronous Data Link Control. A structure for transferring data
among a variety of computing platforms.
SNMP Simple Network Management Protocol. An Internet management protocol that uses either IP
for network-level functions and UDP for transport-level functions, or TCP/IP for both. Can be
made available over other protocols, such as UDP/IP, because it does not rely on the
underlying communication protocols. See also community (SNMP).
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.
SOF Start of frame. A group of ordered sets that marks the beginning of a frame and indicates the
class of service the frame will use.
soft zone A zone consisting of zone members that are made visible to each other through client service
requests. Typically, soft zones contain zone members that are visible to devices using Name
Server exposure of zone members. The fabric does not enforce a soft zone. Note that
well-known addresses are implicitly included in every zone.
SoIP SCSI-over-IP.
SONET Synchronous optical network. A standard for optical networks that provides building blocks
and flexible payload mappings.
special character A 10-bit character that does not have a corresponding 8-bit value but is still considered valid.
The special character is used to indicate that a particular transmission word is an ordered set.
This is the only type of character to have five ones or zeroes in a row.
SPLD Simple PLD. Usually, either a PLA or PAL.
SPOF Single point of failure. Any component in a SAN whose malfunction could bring down the
entire SAN.
SQ_ID Sequence ID. Used to identify and track all of the frames within a sequence between a source
(S_ID) and destination (D_ID) port pair.
SRM Storage resource management. The management of disk volumes and file resources.
SSH Secure shell. Used to support encrypted Telnet sessions to the switch. SSH encrypts all
messages, including the client sending the password at login.
Standard Translative
Mode
Allows public devices to communicate with private devices that are directly connected to the
fabric.
stealth mode A method used in some switches to simulate switches using QuickLoop.
store-and-forward A switching technique that requires buffering an entire frame before making a routing
decision.