SPEC Kit 325: Digital Preservation  · 105
University of Illinois at Urbana-Champaign
IDEALS Digital Preservation Support Policy
https://services.ideals.illinois.edu/wiki/bin/view/IDEALS/PreservationSupportPolicy
PreservationSupportPolicy IDEALS IDEALS Wiki
https://services.ideals.illinois.edu/wiki/bin/view/IDEALS/PreservationSupportPolicy[10/5/11 12:28:45 PM]
AND is in a format that has lossy data compression (example: Ogg Vorbis);
OR is in a version of a format that has been deprecated in favor of a later
version (example: HTML 3.0).
OR
Is in a proprietary format;
Is in a format that is widely adopted; and
Is in a format that is of enough public and/or commercial interest that tools are
likely to be available to migrate them to successor formats.
NOTE: Files with embedded content (for example, a PowerPoint (ppt) with a AVI
video file (avi) inserted into it) are more preservable if the the files are deposited as
separate files within the same item in IDEALS
need link here to help
screen. If the
content remains embedded, it will likely not remain intact when the file is
transformed to a more preservable format.
NOTE: Files with dynamic content (for example, an Excel spreadsheet (xls) with
dynamic functions - even simple ones!) are more preservable if the dynamic content
is either documented (for example, a note in an Excel spreadsheet explaining the
functions that are included) or the document is saved as a static document (for
example, a cell in an Excel spreadsheet that is the sum of a column is saved as the
sum, not the function of adding the multiple cells).
Actions:
Monitor file format for changes that might warrant transformation or
reassessment;
When possible, transformation to a format that preserves the content and
when possible the formatting and style of the original, but not necessarily the
functionality.
Basic preservation of original object including:
bitstream maintenance;
persistent, permanent identifier;
preservation metadata;
onsite and offsite backup copies;
regular virus and file corruption checks;
periodic refreshments to new storage media.
Examples:
Microsoft Word document (proprietary format)
A compressed TIFF file.
Category 3 - Low Confidence - Basic Preservation Only
Description:
Low confidence level in ability to provide long term preservation to content of
file
Basic level of preservation support in effort to maintain maintain viability of
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