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An Introduction to Tessella and The Safety Deposit Box Platform. Mark Evans Digital Archiving Practice Manager. Tessella Overview. What we do Information technology & consulting services for leaders in R&D, science, engineering and archiving - PowerPoint PPT Presentation
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An Introduction to Tessella and The Safety Deposit Box Platform
Mark Evans
Digital Archiving Practice Manager
• What we do
• Information technology & consulting services for leaders in R&D, science, engineering and archiving
• Archiving is one of our two major technology focus areas
• Flexible & end to end support
• Key facts
• Established in 1980
• ~200 S/W Engineers and Consultants
• 60% of staff hold PhDs
• What makes us different
• Archiving and Preservation experts
• 10 years of practical experience
• Delivered real preservation solutions
• Well qualified S/W engineers & consultants
• Effective partnering at all levels
- Part of a consortia
- Large systems integrators
- Acting as a prime
- Research colaboratives
Tessella Overview
• Dedicated archive practices in
• Abingdon UK
• Washington DC
Tessella Locations
CompleteCompleteArchivingArchivingSolutionSolution
Long TermLong TermSupportSupport
ConsultancyConsultancy
ResearchResearch
SDB Technology: SDB Technology: Archive & Active Archive & Active PreservationPreservation
CustomizationCustomization& Integration& Integration
Archiving Services
Developed online file format registry with UK National Archives, used to dictate preservation strategies.
Open source file identification tool using digital “fingerprint” to identify file formats, developed with UK National Archives.
Open source x86 emulator build for KB (Royal Dutch Library) and Nationaal Archief (Dutch Archive).
Genuine Innovation in Archiving
Digital Archive platform that provides “Active Preservation” Capabilities
SDB – Safety Deposit Box
150 man year EU funded research into preservation strategies with 15 leading organisations.
Digital Preservation Research
Keeping Emulation Environments Portable: - EU funded research for the development of an Emulation Access Platform
DataNet program – Development of a national infrastructure to suport the long term preservation and access of scientific data
Example Digital Archiving Projects
• National / Regional implementations
• 8 instances of SDB
• NARA ERA program
• Subcontractor to Lockheed Martin
• Life sciences
• Archiving of digitally signed Electronic Lab Notebooks (ELN)
• Global Digital Archive
• Consultancy
• Needs assessment for UK houses of Parliament
• Education seminar to agencies in Canada
Based on the OAIS reference model
Evolving technology since 2003
In use at leadinginstitutions
OAIS
Archival Storage
Administration
Preservation Planning
Data Management
Producer C onsum erIngest Access
Includes “Active Preservation” framework(safeguard against technology obsolescence)
Safety Deposit Box
Safety Deposit Box
The British Library UK National Archives
Dutch National Archives
Malaysian Archives
Swiss Federal Archives
Wellcome Trust Library
Rotterdam Regional Archives
Safety Deposit Box – Deployed Locations
• SDB can be offered in 3 primary configurations
Web service API
Standalone Archive
Black-box Archive
Active PreservationPlug-in
Customworkflows3rd party
applications
Producer
Producer
Producer
Accessionbuilder
Accessionauto-loader
Custom / 3rd party access
SDB search & browse
3rd party content storage
Storage adapter
C onsum er
C onsum er
C onsum er
Safety Deposit Box - Offerings
• Create an SDB SIP from received content
• Receive SIP (files + metadata) by:• File copying
• ftp
• SOAP
• Perform SIP Checks:• Consistency checks
• Fixity check
• Virus check
• Characterization
• Ingest Delete requests
• Ingest Edit requests
Ingest toolkit
Metadata Store
• Represents the AIP (SDB supports a logical AIP approach)
• Based of the Planets core data model
• Structure of records
• Association of files to records
• Technical metadata
• Descriptive metadata
• Full audit trail
• Significant properties
• Configurable metadata schema
• Any registered schema , e.g. MARC, PREMIS etc
• Automated integrity checking
Passive Preservation
Three main components
• Characterization
• What do I have in my archive?
• Preservation planning
• What am I going to do to guard
against obselescence?
• Preservation Processing (Migration)
• Select an approved pathway
• Execute
• Validate
• Re-ingest and associate to the original
Active Preservation
• Technical registry is the cornerstone of the active preservation framework
• Contains Factual information
• Formats
• Software
• Hardware
• Tools
• Contains Policy Information:
• Risks / obsolescence
• Significant properties
• Tool usage
• Migration pathways
Active Preservation
• Characterize files: - Use a framework approach
• Basic: file size, last modified date
• Format Identification (DROID)
• Format Validation (JHove)
• Property extraction (Jhove plus others)
• Embedded object extraction:
• Iterative characterisation
• Record Components:
• Discover
• Measure invariant properties of the components
Characterization
SDB uses a risk based approach
• Determine risk of formats
• With properties (e.g. LOC sustainability factors)
• Determine files at risk
• Determine records at risk:
• Build list of things to migrate
• Look up best migration pathway:
• Allow manual approval
Preservation Planning
• Perform approved pathway
• Complex mappings allowed
• Partial migrations allowed
• Validation:
• Re-measure invariant properties
• Tool specific
• Ingest migrated files + metadata
Preservation Action - Migration
Thank you for your attention
Mark Evans
(1) 240 403 7504
http://www.tessella.com
Questions