# Presentation: 531450

## Physical Media WG Update

**November 30, 2006**

## Fall 2006 WG Status

- Initial technology plan
- Use Cases
- Decision Matrix
- Media Testing
- NMSU Website

- Physical Media WG Wiki

- Slide:

## Media Plan

- Understand PDS requirements for physical media
- Define the usage of physical media within PDS
- Address PDS media issues for the following functions
- Delivery to PDS
- Delivery to NSSDC
- Delivery to Users
- Preservation and storage
- Identify reliable media
- Test existing media samples within PDS
- Understand the lifespan of the media for preservation and storage
- Define Media Physical Recommendation Matrix for PDS
- Understand Emerging Physical Media Trends
- Maintain website on
- Recommendations (Management Council website)
- Experiences/Technical Detail (Engineering Node website)
- Work with other WGs to develop mechanisms for verification

- Slide:

## What is PDS doing with Physical Media?*

- UC-1: PDS Node Preservation
- UC-2: Data Provider Production and Transfer to PDS
- UC-3: Transfer to NSSDC
- UC-4: Transfer to Data Consumer
- UC-5: Local Storage
- UC-6: Verification
- UC-7: Migration
- UC-8: Investigation

- * PDS Physical Media Use Cases Document (DRAFT-Sept 25, 2006)

- Slide:

## Decision Matrix for Physical Media

- Define viability of physical media choices across the critical PDS usage scenarios:
- Delivery of data to PDS
- Delivery of data to users
- Delivery of data to NSSDC
- PDS local archiving
- Define verification and migration schedule based on media type
- Identify emerging/declining trends

- Example matrix developed for Data
- Movement -- 2006 IEEE/NASA Mass
- Storage Systems presentation

- Slide:

## DVD/CD Testing

- Conduct joint test at NIST and within PDS to validate the following:
- Use NIST high-end testing equipment to verify readability of PDS CD/DVD volumes
- Use PDS COTS testing equipment to verify readability of PDS CD/DVD volumes
- Compare results of tests
- Are there trends?
- Can we identify reliability concerns with types of media/recorders?
- How do PDS methods compare to NIST methods for verification?

- Slide:

## DVD/CD Testing  - Media 

-   1 CD    - USGS:  CD_PA060                 03-APR-00
-  2 CD    - GEO:   USA_NASA_PDS_MG_4564     25-JUN-97
-  3 CD    - USGS:  USA_NASA_PDS_CL_4020     1999
-  4 DVD-R - SBN:   NIEROS_5001              15-JAN-04
-  5 DVD-R - USGS:  USA_NASA_PDS_DMGSC_1016  01-APR-03
-  6 DVD-R - USGS:  USA_NASA_PDS_DMGSC_1017  01-APR-03
-  7 DVD-R - USGS:  USA_NASA_PDS_DMGSC_1018  01-OCT-03
-  8 DVD-R - USGS:  USA_NASA_PDS_DMGSC_1036  01-0CT-04
-  9 DVD-R - USGS:  USA_NASA_PDS_DMGSC_1036  01-OCT-04
- 10 CD    - SDDPT: MGN SAR-EDR (MGN_0017)   06-OCT-98
- 11 CD    - SDDPT: MGN SAR-EDR (MGN_0038)   22-OCT-98
- 12 CD    - SDDPT: VIKING LANDER (VL_1001)  03-MAY-95
- 13 CD    - SDDPT: VIKING ORBITER (VO_1101  12-JUN-95
- 14 DVD-R - SBN:   USA_NASA_PDS_NICRU1_3001 10-SEP-02
- 15 DVD+R - USGS:  LO3_HIGH_RES_V1          29-JUN-05
- 16 DVD-R - PPI:   MGN_9001                 16-MAR-00
- 17 CD    - PPI:   USA_NASA_PDS_VG_1001     08-JAN-03
- 18 DVD-R - PPI:   USA_NASA_PDS_DMGSM_2001  UNK (UNREADABLE)
- 19 DVD-R - PPI:   USA_NASA_PDS_CORPWS_0001 21-APR-05
- 20 CD    - PPI:   GOMA_3009                14-DEC-98
- 21 CD    - PPI:   HAL_0025                 19-SEP-00

- Slide:

## NIST – DVD/CD Summary

- Received results from NIST last week
- Need time to digest the results, but they seem to point to degradation
- Need to understand the rate
- PPI has offered to run its own tests. Need to compare the results.

- Slide:

## NMSU Website

- Details of Physical Media results uploaded to NMSU MC website
- PDS Physical Media Survey Summary (20060620)
- Physical Media Resources (by MMartin)
- General Reference CD and DVD
- Organizations
- High density DVD formats
- CD and DVD Tips
- Vendors and Resources
- Tools and Publications
- Media Information and Evaluations
-  NMSU MC website:
- _[http://atmos.nmsu.edu:8080/myapp-0.1-dev/pwdhtml.jsp](http://atmos.nmsu.edu:8080/myapp-0.1-dev/pwdhtml.jsp)_
-   username:  pdsmc
-   password:   council

- Slide:

## Next Steps

- Testing
- Perform PPI tests
- Consider testing PDS media @ NSSDC
- Develop Physical Media Decision Matrix
- Integrate results from other government efforts
- Provide recommendation on use of different physical media technologies
- Develop verification plan
- Develop recommendations for supporting PDS archive integrity policy
- Support data integrity development
- Report back to the MC

- Slide: