Information Technology Reference
In-Depth Information
The generated AIPs (consisting of a manifest with links to data and “metadata”)
are ingested into the second component: the PDS box. PDS provides most of its
functionality - including awareness of the AIP structure and execution of data-
intensive functions such as transformations - within the storage. It handles technical
provenance records internally, supports media migration, and maintains referential
integrity.
17.6.3.1 Integration with ECM
Enterprise Content Management (ECM) is the technology used to capture, man-
age, store, preserve, and deliver content and documents related to organizational
processes. ECM tools and strategies enable the management of an organization's
unstructured information, wherever that information exists. New business needs and
legislations require sustaining content stored in an ECM system for decades to come,
and hence require defining and storing preservation objects in the ECM. The goal
is to leverage existing ECM capabilities and make the storing of objects subject to
LTDP as transparent as possible to the user - almost no difference between LTDP
objects and non-LTDP objects.
PDS can be integrated with ECM without changing the ECM normal flow [
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by automatic generation of the AIP, and mapping the AIP to the ECM object model.
The AIP is mapped to two unique objects and shared RepInfo objects. The unique
objects are (1) a Manifest file that is the root of the AIP and includes all the AIP
“metadata” as well as references to the CDO and RepInfo of this AIP, (2) the original
added object in its native format that will serve as the CDO of this preservation
object.
The Content Management Interoperability Services (CMIS) [
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] standard pro-
vides a uniform means for applications to work with content repositories. PDS can
be mapped to ECM using CMIS and then it may be adequate to different ECMs that
support the CMIS interface.
17.6.3.2 Integration with iRODS
The Storage Resource Broker (SRB)/Intelligent Rule-Oriented Data management
System (iRODS) [
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] is a data grid technology developed by the San Diego
Supercomputing Center (SDSC). iRODS manages distributed data, enabling the
creation of data grids that focus on the sharing of data, and was recently extended
to persistent archives that focus on the preservation of data. Data grid technology
provides fundamental management mechanisms for distributed data in a scalable
manner. This includes support for managing data on remote storage systems, a uni-
form name space for referencing the data, a catalogue for managing information
about the data, and mechanisms for interfacing with the preferred access method.
The SRB/iRODS is middleware software, which builds on top of standard file
systems, commercial archives, and storage systems.
