2.1 OAIS ENVIRONMENT
The simple model shown in figure 2-1 depicts the environment surrounding an OAIS.
Figure 2-1: Environment Model of an OAIS
Outside the OAIS are Producers, Consumers, and Management.
– Producer is the role played by those persons, or client systems, which provide the information to be preserved.
– Management is the role played by those who set overall OAIS policy as one component in a broader policy domain, for example as part of a larger organization. In other words, Management control of the OAIS is only one of Management’s responsibilities. Management is not involved in day-to-day Archive operations. The responsibility of managing the OAIS on a day-to-day basis is included within the OAIS in an administrative functional entity that will be described in 4.1.
– Consumer is the role played by those persons, or client systems, that interact with OAIS services to find and acquire preserved information of interest. A special class of Consumers is the Designated Community. The Designated Community is the set of Consumers who should be able to understand the preserved information. A given individual or system may act in the role of both a Consumer and a Producer.
Other OAIS Archives are not shown explicitly. Such Archives may establish particular agreements among themselves consistent with Management and OAIS needs. Other Archives may interact with a particular Archive for a variety of reasons and with varying degrees of formalism for any pre-arranged agreements. One OAIS may take the role of Producer to another OAIS; an example is when the responsibility for preserving a type of information is to be moved to this other Archive. One OAIS may take the role of Consumer to another OAIS; an example is when the first OAIS decides to rely on the other OAIS for a type of information it seldom needs and chooses not to preserve locally. Such reliance should have some formal basis that includes the requirement for communication between the Archives of any policy changes that might affect this reliance. The range of possible interactions between OAIS Archives is discussed in section 6, Archive Interoperability.
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