Commitment to Preservation
Entropía Educativa is committed to ensuring the long-term preservation of all digital resources published in our repository. We recognize the importance of maintaining permanent access to academic knowledge for future generations.
Preservation Strategies
- Multiple backups: Daily, weekly, and monthly backups on redundant servers
- Distributed storage: Copies in multiple geographical locations
- Integrity check: Checksums and periodic file validation
- Format migration: Proactive update to standard formats when necessary
- Continuous monitoring: Automated supervision of file integrity
File Formats
We use standard and open formats to maximize longevity and accessibility:
PDF/A: Preferred format for text documents (ISO 19005)
XML: For metadata and structured content
JPEG2000: For high-quality images
UTF-8: Standard character encoding
Preservation Metadata
We maintain complete metadata for each resource:
- Dublin Core: Standard descriptive metadata
- PREMIS: Preservation metadata (events, agents, rights)
- MD5/SHA-256 Checksums: For integrity verification
- Version history: Record of changes and migrations
Persistent Identifiers
All resources have permanent identifiers:
- ARK (Archival Resource Key): ark:/59515/lib[ID]
- ISBN: For published books
- Canonical URLs: Stable and predictable URL structure
- OAI-PMH identifiers: oai:entropiaeducativa.org:type:ID
Contingency Plan
In case of catastrophic events:
- Off-site backups in the cloud (AWS S3, Google Cloud)
- Preservation agreements with allied institutional repositories
- Documented disaster recovery procedures
- Periodic backup restoration tests
Technological Obsolescence
To mitigate obsolescence:
- Monitoring of emerging standards and formats
- Proactive migration to new formats when necessary
- Maintenance of multiple versions (original + migrated)
- Complete documentation of migration processes
Responsibilities
Entropía Educativa assumes responsibility for:
- Maintaining the necessary technical infrastructure
- Updating software and hardware regularly
- Training staff in preservation best practices
- Reviewing and updating preservation policies annually
Long-term Access
We guarantee:
- Free and permanent access to all resources
- 24/7 availability with 99.9% uptime
- Compatibility with modern browsers and devices
- Compliance with accessibility standards (WCAG 2.1)
Contact
For inquiries about digital preservation