[CMC] DAI WG Response
Nestor.Peccia at esa.int
Nestor.Peccia at esa.int
Thu Feb 2 09:07:24 UTC 2017
Dear CMC members,
a mail was sent yesterday by the Secretariat asking the CMC for guidance
on the action placed upon the DAI WG / MOIMS ADs during the last CMC
meeting (without consulting first the CESG Chairs)
the DAI WG Chair is insisting via the Secretariat to comply more with the
due date agreed with the CMC than the MOIMS ADs obligations vis a vis any
of its WGs wrt roadmap, architecture and protocols cross-check at Area and
I, as CESG Chair, would like to express my humble opinion
As stated in my mail from 28th Oct 2016, the action was placed upon the
DAI WG and the MOIMS ADs (not only on the WG chairs) I attach the text
below for the sake of consistency
The DAI WG TN was officially distributed to the MOIMS ADs and CESG Chairs
by 25th January 2017 (i.e. 5 working days before the due date of 1st Feb
2017). The WG needed ca. 3 months to issue the TN
There is currently no consensus between the WG Chair and the ADs about the
TN final contents (several comments have been raised by the ADs who
reviewed it during the last weekend, but further analysis is needed).
Therefore the next step would be (in case of persistence of the
non-consensus) to bring the issue at CESG level. The WG Chair can not
bypass the hierarchical chain, contacting the CMC via the Secretariat
ADs have (according to the Proc & Org YB) the task to
assess the WG charter
ensure the quality and content of the WG / Area roadmap
ensure that the Area work follows the set of architectural principles
agreed by the CESG and is properly synchronized with work in other areas
make sure that technical cross-pollination occurs among the various Area
1 month delay in the completion of an action has no impact in the
whereabouts of the DAI WG. The schedule relaxation on DAI Projects (due to
lack of resources) has been a regular pattern during the last years.
Therefore, I suggest as CESG Chair that CMC agrees with the new action
due date proposed by the MOIMS ADs, i.e. 1st March 2017
Last but not least, the CESG Chair fully supports the past / current /
future work of the DAI WG and endorses its existence. The only objection
is on the way the above mentioned action was / is being handled
Action to be completed by DAI WG Chairs and MOIMS ADs
RESOLUTION 25. DAI WG Resolution:
CMC acknowledges that in today?s Data Economy, space systems generating
and transporting large amounts of relevant data; be it science (GAIA is
generating 50 GB/day) earth observation (Sentinel-2A generating 1 TB/ h),
navigation or telecommunication satellites, constitute key assets for the
In this context, standards supporting proper storage and preservation of
data, open access to the space data, merging of data from different
sources, analysis and processing big data and all related processes and
mechanisms are of paramount importance.
Scientific communities are already for quite some time working nationally
and internationally to define adequate standards for their data, be it
astronomy, planetary exploration or earth observation.
The question is what should the CCSDS organisation do and how should it
position itself in the wake of such space data revolution and how could
the work done over the years to standardise data storage and archiving be
leveraged at the service of the new paradigms.
In this context, and following the request of the DAI WG to the CMC for
support, CMC would like to encourage the DAI WG to address the following
questions within a short paper to be delivered to CMC by 1 February 2017:
What is the current DAI roadmap and how does it make a valuable
contribution to the data issue, taking into account what has already been
produced including the overall worldwide efforts in this area?
Taking into account that there are dedicated international organisations
working on archiving and merging scientific data, astronomy data, as well
as Earth data, what should be the role of CCSDS in general and that of the
DAI WG in particular?
Is the long term data preservation of the housekeeping data properly
addressed in these initiatives? Is there a need for developing this part
of the data preservation?
In this context, what would be the next project for the DAI WG in the
future, should resources be available, and how would this project fit with
the current CCSDS reference architecture and work plan?
Clarification: None. DAI and MOIMS to produce the requested TN.
Take Notice: M. Merri / B. Behal, D. Giaretta / J. Garrett
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