| 翻訳と辞書 |
| Definitive Media Library ： ウィキペディア英語版 |
Definitive Media Library
A Definitive Media Library is a secure Information Technology repository in which an organisation's definitive, authorised versions of software media are stored and protected. Before an organisation releases any new or changed application software into its operational environment, any such software should be fully tested and quality assured. The Definitive Media Library provides the storage area for software objects ready for deployment and should only contain master copies of controlled software media configuration items (CIs) that have passed appropriate quality assurance checks, typically including both procured and bespoke application and gold build source code and executables. In the context of the ITIL〔Shirley Lacy and Ivor Macfarlane (2007). ITIL Service Transition. The Stationery Office. ISBN 978-0-11-331048-7.〕 best practice framework, the term Definitive Media Library supersedes the term definitive software library referred to prior to version ITIL v3.
In conjunction with the configuration management database (CMDB), it effectively provides the DNA of the data center i.e. all application and build software media connected to the CMDB record of installation and configuration.
The Definitive Media Library (DML) is a primary component of an organisation's release and provisioning framework and service continuity plan.
==Background==
In a controlled IT environment it is crucial that only authorised versions of software are allowed into production. The consequences of unauthorised software versions finding their way into the live environment can be serious. Typically, in a mature organisation, stringent Change and Release Management processes will exist to prevent this occurring, but such processes require a place where the authorised software versions can be safely stored and accessed. The solution put forward by ITIL in its third version is called the Definitive Media Library or DML (replacing the previously named Definitive Software Library or DSL in version two). ITIL proposes that the DML can be either a physical or virtual store and there are benefits and drawbacks with either method. Clearly, however, there are key factors in the success of any DML solution i.e. software required to be deployed into production should be rigorously tested, assured and licensed to perform and also packaged in such a way that it will safely and consistently deploy. Also, the DML should be easily accessed by those, and only those, authorised to do so. In this way, a virtual (electronic) storage area will almost always provide a superior solution, meaning the DML can be centralised and accessed remotely or outside normal business hours if the need arises (see distribution).
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
■ウィキペディアで「Definitive Media Library」の詳細全文を読む
スポンサード リンク
| 翻訳と辞書 : 翻訳のためのインターネットリソース |
Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.
|
|