Configuration item
Encyclopedia
The term configuration item or CI refers to the fundamental structural unit of a configuration management
system. Examples of CIs include individual requirements documents, software, models, plans, and people. The Configuration management system oversees the life of the CIs through a combination of process and tools by implementing and enabling the fundamental elements of identification, change management, status accounting, and audits. The objective of this system is to avoid the introduction of errors related to lack of testing as well as incompatibilities with other CIs.
A release (itself a versioned entity) may consist of several configuration items. The set of changes to each configuration item will appear in the release notes
, and the notes may contain specific headings for each configuration item. A complex hardware configuration item may have many levels of configuration items beneath its top level; each configuration item level must meet the same fundamental elements of the configuration management system.
In addition to its purpose in the implementation and management of a change, each configuration item's listing and definition should act as a common vocabulary across all groups connected to the product. It should be defined at a level such that an individual involved with product marketing and an individual at the coalface of implementation can agree to a common definition when they use the name of the configuration item. Selection and identification of configuration items for a particular project can be seen as the first step in developing an overall architecture of the product from the top down.
Configuration items, their versions, and their changes form the basis of any configuration audit
.
Configuration management
Configuration management is a field of management that focuses on establishing and maintaining consistency of a system or product's performance and its functional and physical attributes with its requirements, design, and operational information throughout its life.For information assurance, CM...
system. Examples of CIs include individual requirements documents, software, models, plans, and people. The Configuration management system oversees the life of the CIs through a combination of process and tools by implementing and enabling the fundamental elements of identification, change management, status accounting, and audits. The objective of this system is to avoid the introduction of errors related to lack of testing as well as incompatibilities with other CIs.
Role in configuration management
The term configuration item can be applied to anything designated for the application of the elements of configuration management and treated as a single entity in the configuration management system.- The entity must be uniquely identified so that it can be distinguished from all other configuration items.
- From the perspective of the implementer of a changeChange requestA change request is a document containing a call for an adjustment of a system; it is of great importance in the change management process. A change request is not raised for a wording change in a letter....
, the CI is the "what" of the change. Altering a specific baselineBaseline (configuration management)Configuration management is the process of managing change in hardware, software, firmware, documentation, measurements, etc. As change requires an initial state and next state, the marking of significant states within a series of several changes becomes important...
version of a configuration item creates a new version of the same configuration item, itself a baseline. In examining the effect of a change, two of the questions that must be asked are:
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- What configuration items are affected?
- How have the configuration items been affected?
- Its use within a product can be traced in a robust status accounting system.
- It is subject to acceptance verification based on established criteria.
A release (itself a versioned entity) may consist of several configuration items. The set of changes to each configuration item will appear in the release notes
Release notes
Release notes are documents that are distributed with software products, often when the product is still in the development or test state...
, and the notes may contain specific headings for each configuration item. A complex hardware configuration item may have many levels of configuration items beneath its top level; each configuration item level must meet the same fundamental elements of the configuration management system.
In addition to its purpose in the implementation and management of a change, each configuration item's listing and definition should act as a common vocabulary across all groups connected to the product. It should be defined at a level such that an individual involved with product marketing and an individual at the coalface of implementation can agree to a common definition when they use the name of the configuration item. Selection and identification of configuration items for a particular project can be seen as the first step in developing an overall architecture of the product from the top down.
Configuration items, their versions, and their changes form the basis of any configuration audit
Audit
The general definition of an audit is an evaluation of a person, organization, system, process, enterprise, project or product. The term most commonly refers to audits in accounting, but similar concepts also exist in project management, quality management, and energy conservation.- Accounting...
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