Dependency removed: Public internet access for information retrieval, and centralized services for document storage - critical knowledge is available offline and survives provider failure.
Knowledge preservation may be the most underrated category in resilience planning. Most people focus on food and power while ignoring information. When infrastructure fails, the ability to look up a medical procedure, repair a system, or teach a skill becomes critical - and that requires offline access to reference material.
- Personal document backup - offline copies of identity documents, insurance, contracts; encrypted and geographically distributed
- Family photos and video preservation - Immich for local management; archival formats; checksums for integrity verification
- Email archiving - local copies of email history; IMAP archival tools; offline search
- Password and credential backup - Vaultwarden (self-hosted Bitwarden); encrypted offline export; paper backup for critical credentials
- Offline encyclopedias - Wikipedia via Kiwix; ZIM format; offline search; multiple language packs
- Technical manuals and datasheets - offline copies of hardware documentation; repair manuals; service guides
- Software documentation - local copies of docs for tools you depend on
- Content packs - pre-packaged collections of maps, docs, and reference material for distribution
- Offline course content - Khan Academy offline; downloaded lectures; local LMS (Moodle)
- Textbooks and references - legal digital copies of reference material; Standard Ebooks; Project Gutenberg
- Children's educational content - offline-capable learning apps; downloaded curricula
- First aid and emergency medicine - offline copies of WHO First Aid guidelines; IFRC manuals; wilderness medicine references
- Drug interaction references - offline pharmaceutical databases; dosing references
- Mental health resources - crisis resources; self-help guides; offline therapy aids
- Durable storage media - M-DISC (1000-year rated); archival optical (BD-R HTL); LTO tape for large archives
- Format longevity - open formats (PDF/A, TIFF, FLAC, MKV) vs. proprietary formats; migration planning
- Redundant storage strategies - 3-2-1-1-0 rule; geographic distribution; cloud tier as one copy
- Data integrity - periodic checksum verification; PAR2 redundancy files; ZFS for self-healing storage
- Offline Knowledge Server - Kiwix + local library of ZIM files on a Raspberry Pi or mini-PC
- Family Archive - structured offline backup of all personal and family documents, photos, and records
- Community Knowledge Repository - shared local server with reference libraries accessible to community members