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IBM TotalStorage DS300 and DS400 Best Practices Guide
Bridge
(1) A component used to attach more than
one I/O unit to a port. (2) A data communications
device that connects two or more networks and
forwards packets between them. The bridge may
use similar or dissimilar media and signaling
systems. It operates at the data link level of the OSI
model. Bridges read and filter data packets and
frames. Facilitates communication with LANs, SANs,
and networks with dissimilar protocols.
Bridge/Router
A device that can provide the
functions of a bridge, router or both concurrently. A
bridge/router can route one or more protocols, such
as TCP/IP, and bridge all other traffic.
Business Continuity Planning
An enterprise
wide planning process which creates detailed
procedures to be used in the case of a disaster.
Business Continuity Plans take into account
processes, people, facilities, systems, and external
elements.
C
Channel
(1) A path along which signals can be
sent; for example, data channel and output channel.
(2) A functional unit, controlled by the processor, that
handles the transfer of data between processor
storage and local peripheral equipment.
CIFS
See Common Internet File system.
CIM
See Common Information Model.
CIM Object Manager
The CIMOM is the core
component to the implementation of the CIM
specification. The CIMOM manages the CIM
schema, instantiation, communication, and
operation of the physical Providers that represent
the CIM classes stored within the namespace of the
local host.
CIMOM
See CIM Object Manager.
Client
A function that requests services from a
server, and makes them available to the user. A term
used in an environment to identify a machine that
uses the resources of the network.
Client authentication
The verification of a client in
secure communications where the identity of a
server or browser (client) with whom you want to
communicate is discovered. A sender's authenticity
is demonstrated by the digital certificate issued to
the sender.
Client-server relationship
Any process that
provides resources to other processes on a network
is a server. Any process that employs these
resources is a client. A machine can run client and
server processes at the same time.
Cluster
A type of parallel or distributed
system that consists of a collection of
interconnected whole computers and is used
as a single, unified computing resource.
Common Information Model
An object oriented
description of the entities and relationships in a
business’ management environment maintained by
the Distributed Management Task Force.
Common Internet File System
CIFS provides an
open cross-platform mechanism for client systems
to request file services from server systems over a
network. It is based on the SMB protocol widely
used by PCs and workstations running a wide
variety of operating systems.
Console
A user interface to a server.
core
(1) In an optical cable, the central region of an
optical fiber through which light is transmitted. (2) In
an optical cable, the central region of an optical fiber
that has an index of refraction greater than the
surrounding cladding material.
CWDM
See Wave Division Multiplexing.
D
DASD
Acronym for Direct Access Storage Device.
This term is common in the z/OS environment to
designate a disk or z/OS volume.
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