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Blade Glossary

BladeUser.org Glossary of Terms

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SAN - Storage Area Network
A dedicated storage network tailored to a specific environment, combining servers, systems, storage products, networking products, software, and services.
SAS
Serial attached SCSI
SAT - Service Address Table
A table that contains information on each node managed by the configurator, including what services are available on each node.
SATA - Serial Advanced Technology Attachment
A standard for connecting storage devices such as hard drives and CD ROM drives to computer systems that is based on serial signaling technology.
Scalable Partition
An IBM Director managed object that defines the scalable nodes that can run a single image of the operating system. A scalable partition has a single, continuous memory space and access to all associated adapters. A scalable partition is the logical equivalent of a physical platform. Scalable partitions are associated with scalable systems and comprise only the scalable nodes from their associated scalable systems.
SCM - Supply Chain Management
The management of resources, functions, and sequence of processes used by organizations involved in the supply of raw materials and products, and their delivery to manufacturers, wholesalers, retailers, and finally consumers.
SCSI - Small Computer System Interface
An ANSI-standard electronic interface that allows personal computers to communicate with peripheral hardware, such as disk drives, tape drives, CD-ROM drives, printers, and scanners faster and more flexibly than previous interfaces.
SDD - Subsystem Device Driver
An IBM Enterprise Storage Server (ESS) device driver that provides: enhanced data availability, automatic path failover and recovery to an alternate path, dynamic load balancing of multiple paths, and concurrent microcode upgrade.
Server
A software program or a computer that provides services to other software programs or other computers.
Server Blade
A single circuit board that contains all of the computing and memory components needed for a computer server, but that depends on a blade server chassis, which may hold several server blades, for common components such as network connections, storage interfaces, and power.
Service Location Protocol
An Internet protocol that identifies and uses network hosts without having to designate a specific network host name.
SFF
Small-form-factor
SFP - Small Form-Factor Pluggable
An optical transceiver used to convert signals between optical fiber cables and switches.
SIMD - Single Instruction, Multiple Data
A parallel programming technique where multiple processors execute the same instructions on different data at the same time.
SIMM - Single Inline Memory Module
In computer hardware, a small circuit card that carries a number of surface-mounted memory chips in a space-saving configuration with the connector pins protruding in a single line from the edge of the card. Varying numbers of SIMMs can be plugged easily into slots in a memory board to expand random access memory.
SIO
Storage and I/O
SLB
Segment lookaside buffer
SLES
SUSE LINUX Enterprise Server
SLP - Service Location Protocol
An Internet protocol that identifies and uses network hosts without having to designate a specific network host name.
SMBIOS - Systems Management BIOS
A key requirement of the Wired for Management (WfM) 2.0 specification. SMBIOS extends the system BIOS to support the retrieval of management data required by the WfM specification. To run IBM Director Agent, a system must support SMBIOS, version 2.2 or later.
SMP Expansion Module
An IBM xSeries hardware option. It is a single module that contains microprocessors, disk cache, random access memory, and three SMP Expansion Port connections. Two SMP Expansion Modules can fit in a chassis.
SMTP - Simple Mail Transfer Protocol
An Internet application protocol for transferring mail among users of the Internet.
SNMP - Simple Network Management Protocol
A set of protocols for monitoring systems and devices in complex networks. Information about managed devices is defined and stored in a Management Information Base (MIB).
SNMP Access and Trap Forwarding
An IBM Director Agent feature that enables SNMP to access managed-system data. When installed on a managed system, this feature enables SNMP-based managers to poll the managed system and receive its alerts. If System Health Monitoring is installed on the managed system also, hardware alerts can be forwarded as SNMP traps.
SNMP Device
An embedded device that uses SNMP to monitor network-attached devices, printers, or computers for conditions that require system-management attention.
SOL - Serial over LAN
Serial Over LAN is a mechanism that enables the input and output of the serial port of a system to redirected over an IP network. In blade servers, serial ports are not typically connected to a traditional serial port socket, thus SOL is used to redirect the serial port traffic to the network. The SOL connection provides access to the text-console command prompt on each blade server and enables the blade servers to be managed from a remote location.
SR
Short Range
SSL - Secure Sockets Layer
A security protocol that provides communication privacy. With SSL, client/server applications can communicate in a way that is designed to prevent eavesdropping, tampering, and message forgery.
StFF
Standard form factor
Storage
Electronic memory storage based on either hard disk drives, magnetic tape, or semiconductor components. Blade storage components include disk drives internal to blades, specialized storage blades, and links to NAS subsystems and SANs (storage area networks.
Storage Management Subsystem
Software that automates as much as possible the management of physical storage by centralizing control, automating tasks, and providing interactive controls for system administrators.
STP
Spanning-Tree Protocol (STP) as defined in the IEEE 802.1D is a link management protocol that provides path redundancy while preventing undesirable loops in the network.
SUMA
Service update management assistant
Switch Module
The BladeCenter component that provides network connectivity for the BladeCenter chassis and blade servers. It also provides interconnectivity between the management module and blade servers.
Symmetric Multiprocessor
A system in which functionally identical multiple processors are used in parallel, providing simple and efficient load balancing.
Synchronous Dynamic Random Access Memory
A type of dynamic random access memory (DRAM) with features a synchronous interface that is clocked synchronized with the computer's system bus. This makes it faster than standard asynchronous DRAM.
System-Managed Buffering
A facility available for system-managed, extended-format, Virtual Storage Access Method (VSAM), data sets in which DFSMSdfp determines the type of buffer management technique, along with the number of buffers needed, based on data set and application specifications.

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