Storage

DEFINITION: ISO 14721 delineates systematic automated storage services that support receipt and validation of successful transfer of Archival Information Packages (AIPs) from ingest, creation of Preservation Description Information (PDI) for each AIP that confirms its "fixity" during any preservation actions through the capture and maintenance of error logs, updates to PDI, including transformation of electronic records to new formats, production of Dissemination Information Packages (DIPs) for Access, and collection of operational statistics. 
 
 Level 0  

The Archives/RM unit only has access to non-conforming archival storage (e.g., CDs/DVDs)

 Level 1

Level 1a: One storage tier level is used in the archival repository for partially conforming ISO14721 AIPs. 

Level 1b: A single instance of an archival storage repository is used for the storage of partially conforming ISO 14721 AIPs. 

 Level 2

Level 2a: Two or more storage tier levels are used to store partially conforming ISO 14721 AIPs.

Level 2b: Two geographically separated instances of an archival storage repository are used for the storage of partially conforming ISO 14721 AIPs. 

Level 2c: Manual capture of partially conforming Preservation Description Information (PDI) establishes the provenance of partially conforming ISO 14721 AIPs.

Level 2d: Manual capture of selected partially conforming Archival Storage operational statistics to support ad hoc digital preservation planning. 

 Level 3

Level 3a: Two or more storage tier levels are used to store conforming ISO 14721 AIPs. 

Level 3b: Two geographically separated instances of an archival storage repository are used for the storage of conforming ISO 14721 AIPs. 

Level 3c: Conforming ISO 14721 Preservation Description Information (PDI) that establishes the provenance of compliant AIPs (e.g., format transformations, device/media renewal, integrity checks, and access/rights protection) is captured with semi-automated tools. 

Level 3d: Semi-automated capture of conforming ISO 14721 archival storage operational statistics that support systematic digital preservation planning.

 Level 4

Level 4a: Automated capture of Preservation Description Information (PDI) establishes the provenance of conforming ISO 14721 AIPs.

Level 4b: Automated capture of conforming archival storage operational statistics supports on- going comprehensive digital preservation planning. 

Level 4c: Three geographically separated instances of an archival storage repository are used for the storage of conforming ISO 14721 AIPs. 

 

Resources

Resources associated with the Storage Framework element assists with providing background information and useful examples that can be consulted when trying to develop sound storage services. 

Definition

ISO 14721 delineates systematic automated storage services that support receipt and validation of successful transfer of Archival Information Packages (AIPs) from ingest, creation of Preservation Description Information (PDI) for each AIP that confirms its "fixity" during any preservation actions through the capture and maintenance of error logs, updates to PDI, including transformation of electronic records to new formats, production of Dissemination Information Packages (DIPs) for Access, and collection of operational statistics.

Level 0

The Archives/RM unit only has access to non-conforming archival storage (e.g., CDs/DVDs).

Move to Level 1: Use one type of storage other than CDs/DVDs to store partially conforming AIPs. [1a] Have a single instance (copy) of the entire archival repository which is used to store partially conforming AIPs. [1b]

Jump to Level 2: Use two types/tiers of storage to store partially conforming AIPs. [2a] Keep two instances of the repository which stores partially conforming AIPs in geographically separated locations. [2b]  Capture Preservation Description Information (PDI) manually to assist with establishing provenance of partially conforming AIPs. [2c] Capture selected partially conforming archival storage operational statistics to support ad hoc digital preservation planning. [2d]

Level 1a

One storage tier level is used in the archival repository for partially conforming ISO14721 AIPs.

Level 1b

A single instance [one copy] of an archival storage repository is used for the storage of partially conforming ISO 14721 AIPs.

Move to Level 2: Use two types/tiers of storage to store partially conforming AIPs. [2a]  Keep two instances of the repository which stores partially conforming AIPs in geographically separated locations. [2b]  Capture Preservation Description Information (PDI) manually to assist with establishing provenance of partially conforming AIPs. [2c] Capture selected partially conforming archival storage operational statistics to support ad hoc digital preservation planning. [2d]

Jump to Level 3: Use two or more types/tiers of storage to store conforming AIPS. [3a]  Store these in geographically separated locations. [3b] Capture Preservation Description Information (PDI) with semi-automated tools to establish the provenance of compliant AIPs. This may include format transformations, device/media renewal, integrity checks, and access/rights protection. [3c] The process of semi-automated capture of conforming archival storage operational statistics supports systematic digital preservation planning. [3d]

Level 2a

Two or more storage tier levels are used to store partially conforming ISO 14721 AIPs.

Level 2b

Two geographically separated instances [copies] of an archival storage repository are used for the storage of partially conforming ISO 14721 AIPs.

Level 2c

Manual capture of partially conforming Preservation Description Information (PDI) establishes the provenance of partially conforming ISO 14721 AIPs.

Level 2d

Manual capture of selected partially conforming Archival Storage operational statistics to support ad hoc digital preservation planning.

Move to Level 3: Use two or more types/tiers of storage to store conforming AIPS. [3a]  Store these in geographically separated locations. [3b] Capture Preservation Description Information (PDI) with semi-automated tools to establish the provenance of compliant AIPs. This may include format transformations, device/media renewal, integrity checks, and access/rights protection. [3c] The process of semi-automated capture of conforming archival storage operational statistics supports systematic digital preservation planning. [3d]

Jump to Level 4: Have three geographically separated instances [copies] of the repository that stores conforming AIPs. [4c] Use automated processes to capture Preservation Description Information (PDI) to establish the provenance of conforming AIPs. [4a] Automatic capture of conforming archival storage operational statistics is used to support on-going comprehensive digital preservation planning. [4b]

Level 3a

Two or more storage tier levels are used to store conforming ISO 14721 AIPs.

Level 3b

Two geographically separated instances of an archival storage repository are used for the storage of conforming ISO 14721 AIPs.

Level 3c

Conforming ISO 14721 Preservation Description Information (PDI) that establishes the provenance of compliant AIPs (e.g., format transformations, device/media renewal, integrity checks, and access/rights protection) is captured with semi-automated tools.

Level 3d

Semi-automated capture of conforming ISO 14721 archival storage operational statistics that support systematic digital preservation planning.

Move to Level 4: Have three geographically separated instances [copies] of the repository that stores conforming AIPs. [4c] Use automated processes to capture Preservation Description Information (PDI) to establish the provenance of conforming AIPs. [4a] Automatic capture of conforming archival storage operational statistics is used to support on-going comprehensive digital preservation planning. [4b]

Level 4a

Automated capture of Preservation Description Information (PDI) establishes the provenance of conforming ISO 14721 AIPs. 

Level 4b

Automated capture of conforming archival storage operational statistics supports on- going comprehensive digital preservation planning.

Level 4c

Three geographically separated instances of an archival storage repository are used for the storage of conforming ISO 14721 AIPs.

Helpful Hints

Something to Consider

  • This element suggests that fully compliant AIPs must be created by an automatic process.  Keep in mind that fully conforming SIPs, AIPs, and DIPs can be created manually - the manual process however may not be very practical for a large archives.

Definitions

  • Archival Information Storage (AIP): An Information Package, consisting of the Content Information and the associated Preservation Description Information (PDI), which is preserved within a system. The AIP often consists of the original files deposited, processed versions of data files and documentation, normalized files, and associated metadata.
  • Dissemination Information Package (DIP): The Information Package, derived from one or more AIPs, received by the Consumer in response to a request to the OAIS." An Archive works with Consumers over time to ensure that DIPs remain useful.
  • Fixity Information:The information which documents the authentication mechanisms and provides Authentication Keys to ensure that the data resource (Content Information) has not been altered in an undocumented manner. An example is a Cyclical Redundancy Check (CRC) code for a file. See also: Checksum, Digital Signature.
  • Preservation Description Information (PDI): The information which is necessary for adequate preservation of the Content Information and which can be categorized as Provenance, Reference, Fixity, Context, and Access Rights Information.

Storage Costs (Indiana Office of Technology Example)

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