The UTL bag-info specification defines which fields are required and/or allowed in bag-info.txt files accompanying collections materials submitted for preservation in the LTO tape archive. Some of these fields must be provided by the bag creator, while others are generated automatically during bagging. See the Bagging manual for instructions on providing values for these fields and bagging using various software tools.
Fields provided prior to bagging
Source-Organization
The organization responsible for writing the bag to tape. Unless the content is being written to tape on behalf of an organization outside of UTL, and UTL does not have administrative control over the digital collection, the value should always be as follows:
University of Texas Libraries
Organization-Address:
The full physical address of the Source-Organization
. For UTL, use the following value:
University of Texas Libraries
The University of Texas
...
at Austin
Post Office Box P Austin, TX 78713-8916
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Python bagging methods will collapse all bag-info values into a single line. When bagging using Python, it is a good idea to separate the |
Contact-Name
...
The name of the person responsible for the bag; . This can be the collection manager or the person
creating the bag].
Contact-Phone
...
International format telephone number of person responsible for
the bag; can be the person creating the bag](beginning with "+1-
" for US numbers) of the person named in Contact-Name.
Contact-Email
...
Fully qualified email address for of the person responsible for the
bag; can be the person creating the bag]
External-Description: [Description of bag contents. Creator info, collection info, and project history]
External-Identifier: [UUID, and OCLC number if applicable]
Internal-Sender-Description: [Describe named in Contact-Name
.
External-Description
A description of the intellectual contents of the bag. Include creator information, collection information, and project history. For digitized archival collections, include the name of the corresponding physical collection and any series, folder, or item information.
External-Identifier
Any unique identifiers assigned by organizations other than the creator or owner of the materials that allow the contents of the bag to be identified. A UUID is required for all bags, and is used for tracking bags in the Digital Stewardship SIPs records. OCLC numbers or other external cataloguing can also be provided, and should be accompanied by a clear label.
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Some internally-developed bagging scripts (see Bagging) will generate a UUID External-Identifier during the bag creation process. When using these scripts, there is no need to generate or provide a UUID manually. For other bagging methods, generate a UUID using an online UUID generator or the ToolBucket plugin for Notepad++. |
Internal-Sender-Description
A description of the equipment and software used to generate
the files that may be useful in rendering files used to render the files in the bag later. Describe the file tiers
included in the bag payload, such as 'archival masters'.]"archival masters" and "derivatives". Include file format information for each file tier, as well as relevant technical specifications such as image resolution, bit depth, or compression methods.
Internal-Sender-Identifier
...
Identifiers assigned by the creator or owner of the materials that are used to identify the contents of the bag in their original environment. Common values for collections held by UTL are accession numbers, collection identifiers, or catalog call numbers.
Rights-Statement
A note describing any conditions or restrictions associated with the
Content Information pertaining to both preservation and access.]
Bag-Group-Identifier
...
Some convention or identifier that associates a
related groups of bags]group of bags. Contact Digital Stewardship to check if a Bag-Group-Identifier
has already been assigned for a given collection.
Bag-Count
...
Count representing this the bag, in order, out of all of the bags
referred to by the Bag-Group-Identifier in the current batch. Use format "# of #] View file
Fields generated during bagging
Bag-Size
The size of the bag in bytes, KB, MB, GB, or TB. Calculated automatically during bagging.
Bag-SOftware-Agent
For bags created using Python, the installed version of bagit.py, plus the URL of the bagit-python GitHub page.
Bagging-Date
The date the bag was created, formatted as "YYYY-MM-DD".
Payload-Oxum
The total size of the bag in bytes, and the number of files in the bag. The two numbers are separated by a period.