Storage and Geographic Location |
- Two complete copies that are not collocated
- For data on heterogeneous media (optical discs, hard drives, etc.) get the content off the medium and into your storage system
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- At least three complete copies
- At least one copy in a different geographic location
- Document your storage system(s) and storage media and what you need to use them
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- At least one copy in a geographic location with a different disaster threat
- Obsolescence monitoring process for your storage system(s) and media
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- At least three copies in geographic locations with different disaster threats
- Have a comprehensive plan in place that will keep files and metadata on currently accessible media or systems
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File Fixity and Data Integrity |
- Check file fixity on ingest if it has been provided with the content
- Create fixity info if it wasn’t provided with the content
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- Check fixity on all ingests
- Use write-blockers when working with original media-Virus-check high risk content
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- Check fixity of content at fixed intervals
- Maintain logs of fixity info; supply audit on demand
- Ability to detect corrupt data
- Virus-check all content
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- Check fixity of all content in response to specific events or activities
- Ability to replace/repair corrupted data
- Ensure no one person has write access to all copies
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Information Security |
- Identify who has read, write, move and delete authorization to individual files
- Restrict who has those authorizations to individual files
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- Document access restrictions for content
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- Maintain logs of who performed what actions on files, including deletions and preservation actions
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Metadata |
- Inventory of content and its storage location
- Ensure backup and non-collocation of inventory
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- Store administrative metadata
- Store transformative metadata and log events
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- Store standard technical and descriptive metadata
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- Store standard preservation metadata
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File Formats |
- When you can give input into the creation of digital files encourage use of a limited set of known open formats and codecs
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- Inventory of file formats in use
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- Monitor file format obsolescence issues
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- Perform format migrations, emulation and similar activities as needed
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