Preservation and Infrastructure Policies

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Contents

Overview

Preservable Formats Policy

The Alliance ADR will work within evolving “best practices” to be responsible stewards and will work to preserve the metadata and supported digital and media objects. The Alliance ADR Implementation Team members will research the “state of the art” preservation practices and offer preservation ideas and recommendations. Choices regarding preservation will be based on the ADR’s community demand. Assessments will be continuously undertaken regarding ongoing technical feasibilities and digital repository “best practices.”

These preservation choices will then be collected into broader community consensus within the higher education and research community as a form of bottom-up standards development that benefits from active work in curation and ongoing member involvement.

  • The ADR commits to preservation of source primary content data streams at the bit stream level
  • The ADR commits to preservation of standards-based core metadata in an interoperable format (i.e. MODS expressed in XML) for all objects
  • The ADR will support migration as demand and resources warrant, but only guarantee preservation and access to the source primary content data streams and core metadata
  • The ADR will develop a file transition and migration plan for file formats identified by the Alliance members with defined levels of service regarding preservation.

Repository Termination Policy

  • The Alliance will return to all members all digital content deposited within the ADR following a mutually agreed upon format, method, and timeline.
  • The Alliance commits to determining a viable persistence plan for the Handle registry for all objects deposited in the ADR
  • The Alliance will furnish sufficient notice (no less than six months) to all members via the Alliance Board of Directors, Member Council, and Implementation Team any and all plans to discontinue ADR services.

Technical Infrastructure Policies

The Alliance centrally manages and maintains the technical infrastructure of the ADR.

Repository Hardware and Storage:

  • The Alliance will grow the RAID storage array incrementally as need is identified following a documented plan reviewed annually.
  • The Alliance maintains at least a RAID 6 configuration, and optimally a RAID 10 for storage at all times.
  • The Alliance follows vendor-identified end-of-life cycles for hardware when appropriate.
  • The Alliance aims to achieve full redundancy for all systems by FY 2012.
  • The Alliance commits to managed growth of repository hardware (i.e. servers, switches, etc.) as capacity needs are met and in keeping with vendor-identified upgrades.

Digital Preservation, Back-up Systems, and Disaster Recovery

  • The Alliance follows the Open Archives Information System (OAIS) for digital asset preservation and repository construction.
  • The Alliance conducts internal audits of the ADR, in keeping with measures set forth by the Certification of Trusted Digital Repositories following every ADR release.
  • The Alliance maintains nightly incremental and full weekly back-ups to tape of the ADR for one month.
  • The Alliance actively monitors the performance of the ADR hardware and responds to infrastructure issues in a timely fashion
  • The Alliance maintains a Premis event data stream for all objects deposited in the ADR.
  • The Alliance maintains a disaster recovery plan that addresses the needs and necessary responses of the ADR.

Connectivity and Communication Mechanisms

  • The Alliance maintains connectivity via the Front Range GigaPop (FRGP), as well as at least one T1 connection for redundancy purposes.
  • The Alliance maintains multiple emails for communication with the ADR: adr[at]coalliance.org; adr-help[at]coalliance.org
  • The Alliance maintains an user-identified issue tracking service for the ADR: http://adrresource.coalliance.org/bugzilla . ADR staff monitor the bug reporting activities of ADR users on a daily basis Monday through Friday, and confirm any bug submissions within twenty-four hours.
  • The Alliance maintains a technical wiki for technical communication about the development of the ADR: http://adrresources.coalliance.org/wiki/index.php/Main_Page
  • ADR Systems Documentation
    • The ADR staff maintains a knowledge base documenting configuration, operations, and maintenance needs of the ADR technical infrastructure.

Bridget 17:03, 28 September 2009 (MDT)

Retrieved from "http://adrresources.coalliance.org/wiki/index.php/Preservation_and_Infrastructure_Policies"
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