HydraDAM2

• NEH funding January 2015 – December 2017• Builds on existing WGBH HydraDAM• Open source Hydra ‘head’ • Preservation-oriented digital asset management

system for time-based media

HydraDAM2 Project Goals:

1. Extend HydraDAM to work on Fedora 42. Develop Fedora 4 content models for audio and

video preservation objects3. Support two storage models:• Online/nearline storage via disk or HSM/tape• Offline storage on LTO tapes

4. Integrate HydraDAM2 with Avalon and OpenVault for access

5. Document/disseminate to wider community

INDIANA UNIVERSITY 3

MDPI: IU Media Digitization and Preservation Initiative• Goal: “To digitize, preserve and make universally

available by IU’s Bicentennial—subject to copyright or other legal restrictions—all of the time-based media objects on all campuses of IU judged important by experts.“• 300,000+ items• 6.6PB over 4 years• >10TB per day peak

• http://mdpi.iu.edu/

Digital Preservation Strategy for MDPI

• Bit Storage:• IU Scholarly Data Archive

(SDA)• 20PB+ HSM system (IBM

HPSS)• Mirrored between IUB and

IUPUI

• File and Metadata Management:• HydraDAM2

• Out-of-region storage• ???

Preservation Services Needed• Storage/retrieval• Scheduled fixity checking• Audit and reporting• Media migration (handled by HSM)• Format migration (future)• …

Key Fedora 4 Features for HydraDAM2• Content modeling• Relationships, metadata

• Linked data• Relationships, RDF representation of PBCore/EBUCore

• Large file support• Fixity, audit• Federation/projection• Allow Fedora to manage data in HSM• Ingest to HSM out-of-band from Fedora

Fedora 4 Path for HydraDAM2• HydraDAM built on Sufia 5• Sufia = engine behind Penn State’s ScholarSphere

• Sufia currently on a path to full Fedora 4 support• Sufia 6 / Hydra 9 uses Fedora 4• Sufia working on Portland Common Data Model (PCDM)

support in May-June

• HydraDAM2-specific development• HSM federation connector (specifically, HPSS)• Asynchronous storage support