10 October 2008

Glossary R


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What is ITIL?
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RAG (Red Amber Green) Chart See SLAM Chart.
Real Charging See Hard Charging.
Receiver The person who receives a service, i.e. the Customer who pays the bills.
Record Information in readable form, including computer data, which is created or received and maintained as evidence of performance of an activity.  Documents are distinguished from Records by the fact they function as evidence of intentions rather than as evidence of activities.  Examples of records include Incident, Problem and Change records.
Reciprocal Agreement An IT Service Continuity Planning option that depends on two organisations being willing and able to share their resources, prior to, or in the event of, an emergency.  Capacity and technical compatibility are particular issues.
Recovery Following failure and repair, the failed CIs are recovered into the live infrastructure.  This may include recovering data to the last known recoverable state.  There may remain further steps before the service is restored to the Users, e.g. testing, transaction re-runs and notifying Users.  Recovery is the penultimate stage of the Incident life-cycle.
Recovery Centre Where an IT unit analyses its full expenditure and investments so that they may be recovered from Customers, usually by formal charging but without profit.
Redundancy Where a system has been designed to eliminate single points of failure, redundant CIs are those which can fail without affecting the delivery of service.  However, generally, once a CI has failed, the inherent redundancy will be gone and repair/replacement is required before further failures which would affect the service.
Referral See Functional Escalation.
Relationship Describes the dependency or connectivity between CIs using terms such as 'used by', 'part of', 'connected to', 'resides on'.  Relationships not only provide a means of assessing the potential full impact of a proposed Change, but can also indicate the potential damage likely to be caused by a single component failure.  Relationships are described as 'primary' if they are hierarchical and 'secondary' if not.
Relative Service Priority In addition to knowledge of activity priorities based upon the given circumstances at a moment in time, service may be awarded a more permanent relative priority, which might be based upon risks to the continuity of important business activities.  See also Priority.
Release A collection of authorised Changes to an IT service, which are tested and introduced into the live environment together.
Release Acceptance The process of testing a release, its implementation procedures and back-out plans to obtain a sign-off of its completeness and accuracy.
Release Management The Service Management process that encompasses the planning, design, build, configuration and testing of hardware and software releases to create a defined set of release components.  Release activities also include planning, preparation, scheduling, training, documentation, distribution and installation of the release to many users and locations.  Release Management uses the controlling processes of Change and Configuration Management.
Release Mechanism The actual equipment, software, techniques or methods used to roll out a release.
Release Plan A document that describes all of the activities, resources and responsibilities related to a particular release, including the scheduling of that release.
Release Policy A document that describes the normal roles, responsibilities, release units, normal change content, release frequency and scheduling of releases.  The Release Policy is normally part of the Configuration and Change Management Plan.
Release Processes One of the groups of Service Management processes identified in the BSi Code of Practice, PD0005.  Release processes deal with the delivery of new and changed CIs, hardware, software, documentation, etc.  into the live environment.
Release Record A record containing details of which CIs are affected by a release (planned or implemented) and how.
Release Schedule A document that contains the dates when all releases will be rolled out into the live environment.
Release Unit The portion of the IT infrastructure that is normally released together, for example, a full TP system; a suite; a program; a single module.
Reliability The ability of a component or IT service to perform a required function under stated conditions for a stated period of time.  Reliability is now often taken to include resilience.  See also MTBF.
Remote Fixes Incidents or Problems resolved without a member of the support staff visiting the physical location in question.
Repair The replacement or correction of a failed CI.  Repair also refers to the fourth stage of an Incident life-cycle, sitting between Diagnosis and Recovery.
Request For Change A means of proposing a Change to any component of an IT infrastructure or any aspect of an IT service.  It may be a document or record in which the nature and details of, and the justification and authorisation for the proposed Change are entered.
Request For Service See Service Request.
Resilience The capability of a set of CIs to continue to provide a required function, if not immediately then very quickly, when some CIs in the set have suffered a failure.
Resolution An action that will resolve an Incident, i.e. allow the users to carry out their business functions.  This may be a temporary work-around or the permanent repair or replacement of a faulty CI.
Resolution Processes One of the Service Management Processes identified in the BSi Code of Practice, PD0005.  Resolution Processes (Incident and Problem Management) deal with the concerns of users, identification of Incidents and Problems, their removal and prevention within the infrastructure.
Resource Capacity Management The Capacity Management task concerned with identifying and understanding the capacity and utilisation of CIs, ensuring that all finite resources are monitored and measured, and collected data is recorded, analysed and reported; also that the potential use of new technology is tracked and understood.
Responsiveness Generally, a comparative measurement of the time taken to respond to a particular stimulus.  The measurement could be concerned with the speed of an IT system response to a User activity but may equally be used to judge the behaviour of an organisation towards, for example, an Incident or Request for Change.
Restoration of Service The service is said to be restored when the users are able to process new work, i.e. the system and available data have been recovered, appropriate test performed. users informed, and any lost work repeated.  Restoration, following Recovery, is the final stage of the Incident life-cycle.
Results Orientation Balancing and satisfying the needs of all relevant stakeholders (this includes the people employed, customers, suppliers and society in general as well as those with a financial interest in the organisation) to achieve excellence.
Return on Investment The (potential) financial benefit expressed as a percentage of the costs of generating that benefit.
Return to Normal The phase within a business recovery plan which re-establishes normal operations.
Revenue Costs See Operational Costs.
Review Examination of a completed action, Incident, Change, etc.  The purpose of the review is to ensure that completion has been achieved to the satisfaction of appropriate stakeholders, identify any lessons learned and feed them into the improvement process.
Risk A measure of the exposure to which an organisation may be subject.  This is a combination of the likelihood of a business disruption occurring and the possible loss that may result from such business disruption.
Risk Analysis Identifying the 'service' value of infrastructure components (assets), the threats to which those assets might be exposed, and the vulnerability of those assets to the threats identified.
Risk Assessment Risk Assessment involves analysing risks as a prelude to managing those risks in order to minimise the effects of unexpected failure.
Risk Management Management of the risks to assets through the identification, selection and use of countermeasures, justified by the identified risks in terms f their potential impact upon services if failure occurs, and the reduction of those risks to an acceptable level.
Risk Reduction Measure Measure taken to reduce the likelihood or consequences of a business disruption occurring (as opposed to planning to recover after a disruption.
Role A set of responsibilities, activities and authorisations.
Roll-out The activities which deliver, install and commission an integrated set of new or changed CIs across logical or physical parts of an organisation.
Roll-out Planning The process of planning for the physical distribution and deployment of a release into the live environment.
Running Costs See Operational Costs.

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