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<p>I was invited to participate in one of the MOIMS-SM&C
sessions at this week's CCSDS meetings in Gaithersburg,
Maryland. My role was to represent the DAI (Digital Archives -
Ingest) in a discussion of long term preservation of data assets
(including plans, products, and ancillary artifacts) anticipated
for future planned missions, segments and systems.<br>
</p>
<p>Initially, My understanding of some of the issues being discussed
had been informed by Mario Merri's presentation to the MOIMS
plenary on Monday. Even with that, it was unclear what I was going
to offer to the attendees, as I was unfamiliar with the SM&C
terms of reference, workplans or meeting agenda. <br>
</p>
<p>The group was able to fairly quickly give me enough of an
understanding of the issues they would like DAI to address for
SM&C and MOIMS in general. Specifically, they would like us
to supply arguments supporting the need for (and value of)
longterm preservation and concomitant longterm availability of
data assets. Once established, such requirements could be used as
leverage to support functions like data asset management to
protect the viability of that data for use in an information and
knowledge management function that could range beyond the purview
of individual missions. <br>
</p>
<p>Some ideas (expressed or implied) from the session:</p>
<ul>
<li>We (DAI) need to create a very high level view of the value
and costs of long term preservation that can be used in
Executive sessions. Even though we're some ways from having a
distributable draft of the IPELTU document, several important
ideas should be expressible by themselves to help explain how
much (or how little) preservation related information missions
would need to collect and save to support transfer to a TDR. <br>
I hope to have some (no more than a handful of) charts
introducing appropriate IPELTU and OAIS concepts to send to
Mario Merri within the next two weeks. I've sent a request to
Mario Merri for a copy of his MOIMS Plenary charts as a
starting point for these. </li>
<li>DAI might find it advantageous to augment the IPELTU effort
with a checklist that can be used in the early stages of a
project to identify areas to be addressed by engineering studies
in support of Long Term Preservation<br>
</li>
<li>To add to the arguments for at least executing engineering
studies to size the effort to support long term digital
repositories of space mission data, we should summarize known
failures (and their consequences) to preserve data.<br>
</li>
<li>The distinction between long term (ie, preservation) archives
and local (segment,system, or mission) archives should be
analyzed to document the differences and equivalencies between
them. MOIMS hopes to be able to produce a White Paper within
the next two months discussing needs for Mission Ops standards
and this topic might be addressed in that paper.</li>
</ul>
<p>That's all for now. See you on Wednesday.</p>
<p>Terry</p>
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