Workflow:LAC Pre-Ingest Workflow

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LAC Pre-Ingest Workflow
Input:Born digital content transferred to Library and Archives Canada
Output:Pre-ingest report
Organisation:Library and Archives Canada

Workflow Description

  1. Review Digital Transfer Assessment Form (DTAF) and provide strategic advice to acquiring staff on potential challenges for pre-ingest, archival processing, and long-term digital preservation
  2. Transfer the content
  3. Ensure that the content has a persistent identifier (e.g., Registration Control Number; barcode for containers where physical storage media are stored)
  4. Confirm security classification of records and infrastructure that is required for processing information at this level of classification
  5. Create a processing workspace on the Pre-ingest server (or classified infrastructure). Note: The Pre-ingest server is a server location where processing workspaces are organized by a standardized directory structure
  6. Ensure that all appropriate metadata and metadata generating templates are copied to the processing workspace (MET subfolder)
  7. Complete a physical carrier inventory documenting all physical storage media involved in the transfer. Media must be numbered sequentially (e.g. "01" or "001").
  8. Review and complete Digital Processing Checklist
  9. Write protect physical media when possible
  10. Insert into drive/attach to computer/anti-virus software (LAC network network will automatically scan for viruses; if a virus is detected, do not copy the data and document the virus in the Pre-ingest Report
  11. Review file format/directory structure of physical media at a high level
  12. If interactive CD/DVD content or authored AV content is detected, do not perform pre-ingest for the physical carriers containing that content. Follow workflow for authored AV content. Document this in the Physical Carrier Inventory spreadsheet
  13. Create sub-folders for physical media on the Pre-ingest server. If a physical carrier is blank or unreadable, do not create a subfolder for it
  14. Copy the content to the Pre-ingest server using SafeCopy. If issues occur, troubleshoot via SafeCopy or other checksum software like Fsum or MD5summer
  15. For any content that is unreadable, send to Digital Preservation for extraction. Record this in Physical Carrier Inventory
  16. Use TreeSize Pro to create a digital object listing of all digital objects successfully copied to LAC infrastructure
  17. Run DROID on the entire registration and create a DROID export (*.CSV) for all content
  18. Start populating the Pre-Ingest Report. Record Pre-Ingest volume, number of files, and number of folders
  19. Weed transitory objects (temporary files, system files, configuration files, Thumbs.db, program files) that are not required to render the information of long-term value
  20. In the Pre-Ingest Report, record if viruses were detected as part of the virus scan
  21. If authored Audio or video files are present, add a note that content must be processed according to a separate AV workflow.
  22. Non-authored AV material (i.e. unstructured AV material that has been copied to the Pre-Ingest server)can be processed in the same manner as other digital records.
  23. Use TreeSize Pro to identify:
  24. (sub-bullet)Duplicated records existing within the corpus. Note existence of duplicate records to be addressed as part of archival processing.
  25. (sub-bullet)Container files. Extract any container files identified using software like WinZip.
  26. (sub-bullet)Email file formats. Identified email files may require a stand alone workflow for processing
  27. (sub-bullet)Data file formats.
  28. (sub-bullet)Database file formats
  29. (sub-bullet)Website file formats. Consult with the Web-Archives and Social Media Program.
  30. (sub-bullet)zero bytes files. Use TreeSize Pro to move zero byte files into disposition folder.
  31. (sub-bullet)long file paths.
  32. (sub-bullet)empty folders.
  33. Triage the DROID report.
  34. Create a DROID report.xlsx, which can be filed in the package's metadata subfolder
  35. (sub-bullet) color code formats in the spreadsheet according to the following categories as needed - for example:
  36. (sub-sub-bullet) Green = Ok as-is
  37. (sub-sub-bullet) Red = format unknown or non-standard: archivist to determine how to access prior preservation
  38. (sub-sub-bullet) Grey = ineligible for selection - file format preservation issue
  39. (sub-bullet)Refer to the Guidelines for Transferring Information Resources of Enduring Value for information on file formats already encountered during processing
  40. (sub-sub-bullet) these guidelines document LAC's formal and information file format policy decisions based on feedback and discussion with LAC Subject Matter Experts
  41. (sub-bullet) Further research may be required if unrecognized or unknown file formats are encountered
  42. Identify password protected and encrypted files
  43. (sub-bullet)Run software to identify files that are encrypted or password protection
  44. (sub-bullet) create a report in CSV format that reflects the results of the analysis
  45. Record Pre-Ingest metrics
  46. (sub-bullet) record post pre-ingest volume, number of files and folder in the Pre-Ingest Report
  47. Follow up with archival processing staff
  48. (sub-bullet) email archival processing staff to report that pre-ingest is complete
  49. (sub-bullet) provide hyperlink to Pre-Ingest Report or indicate it is in the MET subfolder of the processing workspace
  50. (sub-bullet)provide hyperlink to Pre-Ingest Report or indicate it is sitting in the the metadata subfolderof the processing workspace
  51. (sub-bullet)flag anything else that is noteworthy - especially file formats requiring research by archival staff
  52. (sub-bullet) If feasible/required, schedule a meeting with archival processing staff to review Pre-Ingest analysis and findings

Purpose, Context and Content

Pre-ingest is the technological review of digital records transferred to LAC. It involves technical appraisal using multiple software tools to automate the process. The goal of pre-ingest is to aid in creating a SIP that conforms to LAC’s preservation policies and that which LAC has a reasonable success of preserving in its repository and making accessible for the long-term.

There are two major tasks for pre-ingest:

  1. Weed any digital records that should not have transferred in the first place (i.e. computer files that are configuration, developmental, temporary, software files etc.).
  2. Identify file format or other issues that need addressing prior to or during appraisal/selection/description by archival staff.


Further Information