Quick Reference Guide

Glossary 301
SIMM
Acronym for single in-line memory module. A small
circuit board containing DRAM chips that connects to
the system board.
SIP
Acronym for single in-line package, which is a type of
housing for electronic components in which the
connecting pins protrude from one side. A SIP is also
called a Single In-line Pin Package (SIPP).
SKU
Acronym for stock keeping unit.
SMART
Acronym for Self-Monitoring Analysis and Reporting
Technology. A technology that allows hard drives to
report errors and failures to the system BIOS, which
then displays an error message on the screen. To take
advantage of this technology, you must have a
SMART-compliant hard drive and the proper support
in the system BIOS.
SMBIOS
Acronym for system management BIOS.
SMD
Abbreviation for surface mount device.
SMTP
Abbreviation for Simple Mail Transfer Protocol.
SNMP
Abbreviation for Simple Network Management
Protocol. SNMP, a popular network control and
monitoring protocol, is part of the original TCP/IP
protocol suite. SNMP provides the format in which
vital information about different network devices, such
as network servers or routers, can be sent to a
management application.
SNMP trap
A notification (event) generated by the RAC or ESM
that contains information about state changes on the
managed system or about potential hardware problems.
SODIMM
Acronym for small outline-DIMM. A DIMM module
with a thinner profile due to the use of TSOP chip
packages. SODIMMs are commonly used in
portable computers.
SOIC
Abbreviation for Small Outline IC, a small-dimension,
plastic, rectangular, surface mount chip package that
uses gull-wing pins extending outward.
SOJ
Abbreviation for small outline package J-lead, a
small-dimension, plastic, rectangular surface mount
chip package with j-shaped pins on its two long sides.
SOL
Abbreviation for Serial Over LAN. SOL enables
suitably designed servers to transparently redirect the
serial character stream of a baseboard UART to/from a
remote client over a shared LAN. The architecture
requires software running on the managed system's
BMC and client software running on a management
station and/or a central network proxy.
SRAM
Abbreviation for static random-access memory.
Because SRAM chips do not require continual refreshing,
they are substantially faster than DRAM chips.
SSH
Abbreviation for Secure Shell.
SSH is a program that may be used to log into another
system over a network, to execute commands in a
remote system, and to move files from one system to
another. It provides strong authentication and secure
communication over insecure channels.