1. ATT Questionnaire Summary Report WGISS 24 Oberpfaffenhofen ATT Kengo Aizawa

2. Purpose Archive Task Team asked questionnaire to CEOS agencies with the purpose of identifying areas of common interest and concern - present status - future plan opportunities to share experience or lessons learned within the CEOS communities can potentially lead to cost avoidance or savings and built more effective archive system

3. SCOPE Within CEOS agencies not for all of archive system but some sample system

4. Survey contents ATT organized the questionnaire around following themes A. Present archive (system) status B. Next archive (system) plan C. Archive strategies D. Experiences to share

5. A. Present Archive status(1/4) ATT surveyed present archive (system) status regarding following items. 1) data, format, volume 2) media (current media, age, hardware) 3) concerns

6. A. Present Archive status(2/4) 1) data, format, volume - Each agency have a several kinds of datasets - Time period of acquisition is 15 – 40 years - Each agency have a several kinds of data formats – most formats were dataset specific - Data volume is 170TB - 3.3 PB

7. A. Present Archive status(3/4) 2) media (current media, age, hardware) Strage Tek 9940B ＬＴ Ｏ１ ＬＴ Ｏ 2 ＬＴ Ｏ 3 DTF2 Media age Hard ｗ are age DLR ○ ○ 11 ESA ○ 1-22 JAXA ○ ○ 2-33 NOAA ○ 14 USGS ○ ○○ 3-5

8. A. Present Archive status(4/4) 3) Concerns regarding media or hardware - Life expectancy and performance - Media/hardware life time is limited (too short) - Convert media frequently - providing old hardware for old media

9. B. Next Archive (system) Plan(1/3) ATT surveyed next archive (system) plan regarding following items. 1) migrate newer media (when and what) ? 2) format

10. B. Next Archive (system) Plan(2/3) Present Volume Future Volume New Media When DLR170 TB2.5 PB 2012 ESA3.3 PB T10002009-10 JAXA600 TB700 TBLTO32008 NOAA300 TB LTO42009 USGS Over 1.0 PB LTO42008-9 1) migrate newer media (when and what) ?

11. B. Next Archive (system) Plan(3/3) - Worry about increasing number of formats - Should develop conversion tools - ESA plans to migrate new format “SAFE” 2) Format

12. C. Archive Strategies(1/4) ATT surveyed archive strategies regarding following items. 1) mandate to archive the data for a set period of time 2) plan or strategies to ensure long term preservation 3) concerns for long term preservation

13. C. Archive Strategies(2/4) 1) mandate to archive the data for a set period of time - Preserve data forever (all agencies) - 10 years after the end of the mission (ESA) - lifetime of mission (DLR)

14. C. Archive Strategies(3/4) 2) plan or strategies to ensure long term preservation - Replace archive system every 5-6 years - Hardware and media obsolesces - Planning for media migration - Long term viability of current data formats

15. C. Archive Strategies(4/4) 3) concerns for long term preservation - Migration and maintenance cost - Renew system every 5-6 years

16. D. Experiences to share (1/3) ATT surveyed archive strategies regarding following items. 1) Plan to change managing the system more effectively ? 2) Experience or means to reduce system costs ?

17. D. Experiences to share (2/3) 1) Plan to change managing the system more effectively ? - Robotic silo system to newer generation - develop for multi missions

18. D. Experiences to share (3/3) 2) Experience or means to reduce system costs ? - Develop system for multi missions - Robotic silos perform the media refresh effectively

19. Finding and Recommendations Findings: - Monies availability seems to be the major issue. - Most respondents have strategies and plans for migration of their long term archives. - Some are focusing on the concept of "multi- mission " - Every agency face to almost same concerns Opportunities: - Sharing of these plans and strategies may be mutually beneficial.

20. Recommendations: - Distribute replies to the respondents and archive team - Post to WGISS/ATT summary of the replies to the questionnaire - Seek a few more replies to the questionnaire (volunteers??) - Follow-up with those that indicated "they have info to share" for future WGISS meetings Finding and Recommendations