Conclusions Retention is a business issue not an afterthought copyright BAE SYSTEMS 2005 Immortal Information 23/7/4: SB-PDT: Not protectively marked
Long Term Data Retention Sean Barker BAE SYSTEMS, Advanced Technology Centre sean. barker@BAESYSTEMS. com With thanks to LOTAR, AIA & PDES copyright BAE SYSTEMS 2005 Immortal Information 23/7/4: SB-PDT: Not protectively marked
Contents • • From Drawings to Models Changes in IT Environment Scope of the problem Approches – OAIS – LOTAR – Immortal Information copyright BAE SYSTEMS 2005 Immortal Information 23/7/4: SB-PDT: Not protectively marked
A Brief History of CAD Manual Drawing Part shape is modelled to produce drawings more easily Computer as Electronic pencil Automated redrawing after small changes Geometry Modelling Product Modelling Part model includes shape, materials, tolerances copyright BAE SYSTEMS 2005 Immortal Information 23/7/4: SB-PDT: Not protectively marked
What is the master? Manual Drawing is the master Computer as Electronic pencil Geometry Modelling Product Modelling Model as master copyright BAE SYSTEMS 2005 Immortal Information 23/7/4: SB-PDT: Not protectively marked
Contents • From Drawings to Models • Changes in IT Environment • Scope of the problem • Approches – OAIS – LOTAR – Immortal Information copyright BAE SYSTEMS 2005 Immortal Information 23/7/4: SB-PDT: Not protectively marked
Rates of Change Life of Operating System: 18 months Life of Computer: 3 years Time between CAD Versions: 6 months Life of CAD System: 10 years Life of Product: 70 years + time copyright BAE SYSTEMS 2005 Immortal Information 23/7/4: SB-PDT: Not protectively marked
An Example of Generation Change copyright BAE SYSTEMS 2005 Immortal Information 23/7/4: SB-PDT: Not protectively marked
Implications When we update a model in 20 years time: • CAD System replaced twice • The hardware replaced 6 times Given old software on an old computer, we need person who remembers how to use it. Chances of reading old CAD data? copyright BAE SYSTEMS 2005 Immortal Information 23/7/4: SB-PDT: Not protectively marked
Contents • From Drawings to Models • Changes in IT Environment • Scope of the problem • Approches – OAIS – LOTAR – Immortal Information copyright BAE SYSTEMS 2005 Immortal Information 23/7/4: SB-PDT: Not protectively marked
Retention or Archiving? copyright BAE SYSTEMS 2005 Immortal Information 23/7/4: SB-PDT: Not protectively marked
Scope of the Problem • Keep Hardware out of scope • Keep Data OAIS Repository • Keep Information LOTAR • Keep Knowledge Immortal Information copyright BAE SYSTEMS 2005 Immortal Information 23/7/4: SB-PDT: Not protectively marked
Contents • From Drawings to Models • Changes in IT Environment • Scope of the problem • Approches – OAIS – LOTAR – Immortal Information copyright BAE SYSTEMS 2005 Immortal Information 23/7/4: SB-PDT: Not protectively marked
OAIS Overview copyright BAE SYSTEMS 2005 Immortal Information 23/7/4: SB-PDT: Not protectively marked
OAIS • Standard to compare Archive systems • Covers Producer to Consumer • Defines – terms – processes – NOT data formats • Ingest agreement copyright BAE SYSTEMS 2005 Immortal Information 23/7/4: SB-PDT: Not protectively marked
LOTAR Developing European Aerospace Standard • Detailed guidance for – CAD – PDM – etc (but later) • Data Validation • Information Authentification Harmonize with AIA (US Aerospace) copyright BAE SYSTEMS 2005 Immortal Information 23/7/4: SB-PDT: Not protectively marked
Key Issue Retention is not an Afterthought Manual, high cost Design Approval Decision Use Now Automatic, low cost, can be part of QA Fit to Archive Archiving as Afterthought Design Money down drain Use now Fit to Archive Approval Decision Retention. BAE copyright Integral to Design SYSTEMS 2005 Archive Immortal Information Archive 23/7/4: SB-PDT: Not protectively marked
LOTAR, AIA, PDES and IAQG International Aerospace Quality Group Long Term Archival & Retrieval Project LTDR Forum AQG Reps Defense & Space Regulatory Agencies CAA Airbus APAQG Cessna EADS US Do. D Alenia Embraer ESA NATO BAE Fokker Lockheed Martin FAA Boeing AAQG EAQG Airframe GAMA Northrop Grumman JAA NASA JCAB NASDA Transport Canada Bombardier Gulfstream Canadair Raytheon DAC EASA Other GE Kawasaki 7 E 7 SSDBS Aerospace-Industries Association Working Group 7 E 7 - SSDBS AECMA-STAN LOTAR Working Group Chair: Rick Zuray Chair: Jean-Yves Delauney copyright BAE SYSTEMS 2005 Supply Chain Eurocopter Immortal Information Detailed working group structure Mitsubishi MTU Pratt Whitney Rolls Royce Vought 7 E 7 - SSDBS LDTR PDES Inc. Working Group Chair: Gerald Graves 23/7/4: SB-PDT: Not protectively marked
Immortal Information What should we archive? • What is the basic information? • What is the configuration information? • What is the context information? • What is the validity information? What about the Rationale? copyright BAE SYSTEMS 2005 Immortal Information 23/7/4: SB-PDT: Not protectively marked
Example Retention Package Designer Approvers Qualifications List Company Process Personnel Records CAD File Proof of good practice ASCI TEXT Validation Properties AP 203 Recommended Practices GD&T Standards 10303 -203 AP 203 Ed 2 STEPMod 10303 -11 Express 10303 -21 file Materials Handbook STEP 10303 -28 XML Binding Configuration XML copyright BAE SYSTEMS 2005 XSD PDF File Format XML Tag Definitions Design Office Practices Project Standards Supporting Immortal Information Documentation SGML Basic File Formats HTML 23/7/4: SB-PDT: Not protectively marked
Conclusions • • • Long term retention is a complex problem OAIS covers the general concept of archiving AIA & LOTAR specialise OAIS for Aerospace LOTAR adds details for CAD, PDM, etc Immortal Inforamtion will look at what should be retained Retention is a business issue not an afterthought copyright BAE SYSTEMS 2005 Immortal Information 23/7/4: SB-PDT: Not protectively marked
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