29 July 2010

Glossary C


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What is ITIL?
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Call Centre A business/customer interface where the emphasis is on handling large call volumes or telephone based transactions, perhaps for commodity telesales services, queries or complaints.
Call Type Calls to a Service Desk may be a number of types; end users reporting Incidents are one, Service Requests another.  Compliments and complaints are further examples of call types.  Calls to the Service Desk are considered to be operational events that require managing.  Other events will occur and may also be brought to the attention of Service Desk staff, e.g. through the automatic detection of an operational event that needs to be recorded as an Incident.
Capability Maturity Model Developed and maintained by the Software Engineering Institute (SEI), part of the Carnegie Mellon University in Pittsburgh, CMM provides an arrangement into five maturity levels for software development: initial, repeatable, defined, managed, and optimising.  Each maturity level indicates process capability and contains a number of key processes directed at achieving goals and organised by common features, which address implementation and themselves contain key practices that describe activities or infrastructure.  The CMM thus enables the software development organisation to consciously choose a certain target level of maturity, and then to work towards that level.
Capacity The maximum power, performance, content or output of a system or component.
Capacity Management The Service Management process tasked with defining the business's requirements for IT capacity, in both business and technical terms, and understanding and presenting the consequences of delivering those volumes of activities through the IT infrastructure at the right time and at optimal cost.
Capacity Management Database The database(s) used by all activities in Capacity Management, which contains technical, business, financial, service and utilisation data.
Capacity Plan An output of the Capacity Management process.  The Capacity Plan predicts demand for IT services and outlines the resources needed to meet this.  It will contain costed possible scenarios for IT services together with a recommended option.
Capacity Planning The task of providing plans and reports to meet current and future business workloads.
Capital Cost The cost of purchasing any major item that will be viewed and recorded as an asset of the organisation, e.g. a building, hardware or software.  The initial value of the asset is depreciated over a period of time (which may represent the perceived useful life of the asset) and the depreciation is charged against more than one accounting period.  Capital Costs are usually a fixed cost and may also be referred to as 'one-off costs'.  It is also possible for the market value of the asset to increase over time.
Capital Investment Appraisal The process of evaluating proposed investment in specific fixed assets and the benefits to be obtained from their acquisition.  The techniques used in the evaluation can be summarised as non-discounting methods (i.e. simple pay-back), return on capital employed and discounted cash flow methods (i.e. yield, net present value and discounted pay-back).  See also Investment Appraisal.
Capital Item An item maintained on an organisation's asset register and depreciated over more than one accounting period.
Capitalisation Many organisations choose to identify major expenditure as Capital, whether there is a substantial asset or not, in order to reduce the impact of such expenditure on the current financial year.  This is referred to as 'Capitalisation'.  The most common item for this to be applied to is software, whether developed in-house or purchased.
Categorisation See Incident Categorisation.
Category Classification of a group of CIs e.g. hardware, Changes, Problems.
Cause / Effect Diagram (Fishbone / Ishikawa) A technique used by Problem Management to organise and display various theories about what may be the root cause of the Problem.  It focuses attention on one specific Problem (having made sure that everyone agrees what the Problem is), encourages innovative thinking (but not solutions, only possible causes) and provides a graphic representation of relationships (if too many, Multivote!)
CCTA Risk Analysis & Management Method CRAMM® is a tool for analysis and management of IT security risks, suitable for use by the IT Service Continuity and Availability Management processes.  It provides an insight into the risks to which an organisation is exposed and its use is often considered an essential first step towards attaining ISO 17799, the international standard for information security management.
Central Computer and Telecommunications Agency The CCTA was the UK Government Centre for Information Systems responsible for producing and maintaining ITIL.  Now subsumed within the OGC.
Certification The formal evaluation of an organisation's processes by an independent and accredited body against a defined standard and the issuing of a certificate indicating conformance.
Change Any deliberate action that alters the form, fit or function of CIs - typically, an addition, modification, movement or deletion that impacts on the IT infrastructure.
Change Advisory Board An authoritative and representative group of people who are responsible for assessing, from both a business and a technical viewpoint, all high impact Requests for Change (RFCs).  They advise Change Management on the priorities of RFCs and propose allocations of resources to implement those Changes.  The Change Advisory Board (CAB) will be made up of Customer, User and IT representatives and may also include, depending upon the nature of the Changes being considered, 3rd party and other administrative business representatives.  The CAB is chaired by the Change Manager.
Change Advisory Board / Emergency Committee An emergency meeting of the CAB, usually with a reduced number of members, to consider urgent, high impact Changes.  Its membership, which may change from occasion to occasion, therefore needs to represent the knowledge and authority required in these exceptional circumstances.  In practice, members may take their decisions without a physical meeting.
Change Authority In project management terms, a sub-group given the authority to approve change within the project and sometimes referred to as the Configuration Board.  If there were service implications, the Change Authority would need to refer the proposed Change to the Change Manager.
Change Control The procedures to ensure that all Changes are controlled, including the submission, recording, analysis, decision making, approval, implementation and post-implementation review of the change.
Change Document Request for Change, Change control form, Change order, Change record.
Change History Auditable information that records, for example, what was done, when it was done, by whom and why.
Change Log A log of Requests for Change raised during a project, for example, showing information on each Change, its evaluation, what decisions have been made and its current status, e.g. raised, reviewed, approved, implemented, closed.
Change Management The Service Management process responsible for controlling and managing requests to effect changes (RFCs) to the IT infrastructure or any aspect of IT services to promote business benefit while minimising the risk of disruption to services.  Change Management also controls and manages the implementation of those changes that are subsequently given approval.
Change Model A standard way of dealing with Changes of a specific type or complexity; consisting of a pre-selected and sequenced set of activities and roles through which a Change will proceed in order to ensure the consistent implementation of similar types of Changes.  Change models may be built for major (project based) or minor (desktop move) type of Changes.  The aim of a Change Model is to facilitate the accurate and timely assessment of Changes by the appropriate groups of people.  It also allows the definition of workflows and responsibilities for the building and testing of Changes.
Change Record A record containing details of which CIs are affected by an authorised Change (planned or implemented) and how.  The Change Record is created from an accepted RFC.
Change Schedule See Forward Schedule of Change.
Change Slot A regular, agreed time when Changes can be introduced with minimum impact on services.
Channel A Channel is the physical connection from the CPU to an I/O device, usually a controller, or indeed another CPU.
Charging The process of establishing charges and raising bills/invoices for the recovery of costs from customers.  Charges need to be seen as simple, understandable, fair and realistic.
Charging Policy The strategic role of charging, the level and style of recovery and the way in which charging will be introduced and maintained.
Charging System A set if inter-related policies, activities and tools that enable an IT service provider to recover its costs from Customers.
CI Type CIs classified according to their common attributes or purpose.  This is different from a baseline in that it is a high level classification and does not specify a configuration.
Classification The process of formally grouping CIs by type, e.g. hardware, software, accommodation, people, documents, business processes, external services.

The process of formally identifying Changes by type, e.g. project scope change request, corrective change request, innovative function change request, technical infrastructure change request.

The process of formally identifying Incidents, Problems and Known Errors by origin, symptoms and cause.  The classification data strings, which are likely to include information on business impact and urgency, are essentially part of the Incident Record for automated matching of new Incidents against the Problems/Known Errors database.  A distinction is normally made between the initial, or opening, classification (the symptoms) and the final, or closing classification (the cause).

Clerical Backup In case of contingency, delivering some part of the required services without the IT infrastructure.  Nowadays, as well as some manual processes, this is likely to be via standalone PCs and commercial office systems software.
Client The client part of Client-Server Architecture.  Typically, a client is an application that runs on a PC or workstation and relies on a server to perform some operations.  For example, an e-mail client is an application that enables you to send and receive e-mails.
Client-Server Architecture A network architecture in which each computer or processor on the network is either a Client or a Server.  Servers are powerful computers or processors dedicated to managing disk drives (file servers), printers (print servers) or network traffic (network servers).  Clients are PCs or Workstations on which users run applications.  Clients rely on servers for resources such as files, devices and even processing power.  Client-server architectures are sometime called two-tier architectures.
Closure When a Customer or User is satisfied that an Incident or Problem has been resolved.
Closure Code The classification of an Incident or Problem after it has been resolved and the true impact, cause or resolution is understood.
Code of Practice Refers to the BSI publication DISC PD0005 - Code of Practice for IT Service Management.
Cold Stand-by/Start/Site (portable or fixed) An empty computer room, either in portable accommodation or on a fixed site, with power, environmental control and telecommunications, but no IT equipment or software for use in an emergency.  See also Gradual Recovery.
Command Bridge See Operations Bridge.
Commercial Service Provider See Application Service Provider.
Compliance See Auditing for Compliance.
Component CI One of the CIs forming an Assembly CI.
Component Failure Impact Analysis A technique developed by IBM which uses a matrix to identify areas of risk in IT service provision by linking the failure of individual CIs to their impact on the overall level of service provided.
Computer Aided Systems Engineering A software tool for programmers. It provides help in the planning, analysis, design and documentation of computer software.  Often abbreviated to CASE.
Computer Telephony Integration An industry term for the integration of computer systems and telephones, CTI first became available in the 1980s as organisations started using Voicemail, Fax-on-Demand, IVR, ACD for inbound calls and Predictive Diallers for outbound telemarketing.
Concurrency A measure of the number of users engaged in the same operation at the same time - a critical Capacity Planning issue.
Confidentiality Protection of data from unauthorised access.
Configuration Any group of CIs that need to be controlled in order to deliver IT services.
Configuration and Change Management An approach that considers integrating Configuration, Change and certain aspects of Release Management into a single function.
Configuration and Change Management Plan A document describing the combined Configuration and Change Management function, including the organisational roles and responsibilities, the architecture and design of the CMDB, DSL and DHS, and the policies and procedures.
Configuration Audit A physical check on the infrastructure to determine whether the CMDB and the physical CIs correspond.  This could be anything from detecting unauthorised or unlicensed items to checking on the status of an item.
Configuration Baseline See Baseline.
Configuration Board See Change Authority.
Configuration Control Activities concerned with ensuring that only authorised and identifiable CIs are recorded throughout their life-cycle and that no CI is added, modified, replaced or removed without appropriate controlling documentation, e.g. an approved RFC.  Configuration control also includes controlling access to the information held on CIs.
Configuration Documentation Documents that define requirements, system design, build, production, and verification for a Configuration Item.
Configuration Identification The selection, unique identification, description and labelling of assembly and component CIs, and the relationships between them.
Configuration Item A CI is any component of an IT Infrastructure, including a documentary item such as SLA or an RFC, which is (or is to be) under the control of Configuration Management and therefore subject to formal Change control.  The lowest level CI is normally the smallest unit that will be changed independently of other components.  CIs may vary widely in complexity, size and type, from an entire service (including all its hardware, software, documentation, etc.) to a single program module or a minor hardware component.  All existing or potential service Problems will be capable of being linked to one or more CIs.
Configuration Management The process of planning for, identifying, controlling, maintaining and verifying the CIs within a service, recording and reporting their status and, in support of Change Management, assessing the potential IT impact of changing those items.  See also Configuration Identification, Configuration Control, Configuration Status Accounting, Configuration Verification.
Configuration Management Database A database (CMDB) that contains details about the attributes and history of each CI and details of the important relationships between CIs.  The information held may be in a variety of formats, textual, diagrammatic, photographic, etc.; effectively a data map of the physical reality of the IT infrastructure.
Configuration Management Plan A document describing the organisation and procedures for the Configuration Management of a specific product, activity or service.
Configuration Management System A software tool that provides support for Configuration, Change and Release Management.  See the products page for details of such tools.
Configuration Set A term sometimes used to describe a group of CIs that normally belong together.  See also Assembly CI, Baseline.
Configuration Status Accounting A task of Configuration Management concerned with recording the state of a CI at any point in time, past, present or future.
Configuration Structure A hierarchy of all the CI’s that comprise a configuration.
Configuration Verification A task of Configuration Management concerned with ensuring that information held on CIs in the CMDB is accurate.
Contingency Plan See IT Service Continuity Plan.
Contingency Planning See IT Service Continuity Planning.
Continuous Availability A characteristic of an IT service that masks from the users the effects of losses of service, planned or unplanned.  See also Continuous Operation.
Continuous Improvement A cornerstone of IT Service Management best practice, whereby all aspect of service provision are continually challenged to identify potential increases in economy, efficiency or effectiveness.
Continuous Learning, Innovation and Improvement Organisational performance is maximised when it is based on management and sharing of knowledge within a culture of continuous learning, innovation and improvement.
Continuous Operation A characteristic of an IT service that masks users from the effects of planned downtime.  See also Continuous Availability.
Contract An understanding, usually in documentary form, between two bodies with separate legal existence, e.g. between an IT services department and an external supplier.  Subject to specific legal interpretations.  See also Agreement.
Contract Managers Responsible for the management of all IT related contracts which are not managed directly by the customer.  Their prime responsibility is to ensure that there is coherence between the levels of service offered to customers and those agreed with external suppliers.  This includes drafting and reviewing the content of contracts and also regular liaison with suppliers, monitoring the supplier's performance during the contract term.
Control See Configuration Control.
Cost Amount of expenditure, actual or notional, attributable to a specific activity, service or business unit.  When considering pricing, the cost may be the full cost, calculated as a total cost of ownership, including depreciation and planned, renewal, or the marginal cost of providing the service now, based upon the investment already made.
Cost Centre A unit or activity to which costs are allocated.  Also, an approach to IT Financial Management where IT is budgeted and there is nominal charging for specific services; it is concerned with both input and output costs.
Cost Effectiveness See Effectiveness.
Cost Element Within each high level Input Cost Type there will be a number of defined Cost Elements.  Typically, People costs will consist of payroll, staff benefits, expenses, overtime, consultancy, etc.
Cost Model In order to calculate the costs of providing service it is necessary to design and build a framework in which all costs can be recorded and allocated or apportioned to specific Customers or other activities.  Such 'Cost Models' can be developed to show, for example, the cost of each service, the cost for each Customer or the cost for each location.  The usual start point is to develop a Cost-by-Customer Cost Model.
Cost-Plus A means of pricing, often used when the costs cannot easily be predicted, that adds a percentage to the costs for recovery purposes.
Cost Types (Input) The categorisation of IT service input costs into types for the purposes of building a Cost Model should aim for simplicity and consistency.  Typical Cost Types are hardware, software, people, accommodation, external services and transfer.  These are high-level classifications of what money is spent on and each will be sub-divided into a number of Cost Elements.
Cost Unit (Input) See Cost Element.
Cost Unit (Output) The functional business output cost unit e.g. invoice, stock picking list, report, for which a charge will be made.
Cost-by-Customer Cost Model A framework in which costs are identified and allocated or apportioned according to the customers that incur those costs.  This model is most commonly used as a basis for charging.
Cost-by-Serivce Cost Model A framework in which costs are identified and allocated or apportioned according to the services that are delivered by IT.
Costing The process of identifying costs and relating them to business units or activities.
Countermeasure An action taken to reduce risk.  It may reduce the 'value' of the asset, the threats facing the asset or the vulnerability of that asset to those threats.
Creativity The generation of ideas for new or improved working practices, products or services.
Crisis Management The process concerned with managing the whole range of impacts following a disaster, including elements such as adverse media coverage and loss of customer confidence.
Critical Success Factors The certain factors that will be critical to the success of the organisation, in the sense that if the objectives associated with those factors are not achieved, the organisation will fail - perhaps catastrophically so.  Identification of CSFs should help determine the strategic objectives of the organisation.
Culture The total range of behaviours, ethics and values that are transmitted, practised and reinforced by members of the organisation.  This might include the way authority is exercised and people are rewarded, the methods of communication used and the degree of formality expected.
Customer A business manager authorised to negotiate with the IT supplier on behalf of the business.  Typically someone who has responsibility for the cost of the service, either directly through charging or indirectly in terms of demonstrable business need.  (See Intelligent Customer).  The term must be used carefully because an IT Services Organisation's customers will undoubtedly have customers of their own within their supply chain.
Customer Focus Recognising that the customer is the final arbiter of product and service quality and that customer loyalty, retention and market share gain are best optimised through clear focus on the needs of current and potential customers.
Customer Relationship Management All of the activities necessary to ensure that IT Service Managers have a true understanding of their customers' needs and that the customers also understand their responsibilities.  Use of the term in an IT Service Management sense should not be confused with the specific CRM term which is generally focused on helping a business 'sell' more to its customers rather than deliver better services.

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