[Moims-dai] Action to suggest restructuring of section 6 of OAIS

Engel, Felix felix.engel at fernuni-hagen.de
Mon Sep 17 10:12:29 UTC 2018

Hello David,

I like your idea and approach to systematize the section 6. I think the table is valuable to embed the introduced categories and to provide an overview about differences.

All the best

From: MOIMS-DAI <moims-dai-bounces at mailman.ccsds.org> On Behalf Of Terry Longstreth
Sent: Sonntag, 16. September 2018 22:51
To: moims-dai at mailman.ccsds.org
Subject: Re: [Moims-dai] Action to suggest restructuring of section 6 of OAIS


I admire your industry and effort.  I would only suggest that the Management line question marks could be "Cooperative agreements and related preservation risks" or something similar to point out that the role of management involves diplomacy and negotiation beyond that expected for the simple case.


On 2018-09-16 3:30 PM, David Giaretta wrote:
I took an action to think about restructuring section 6.

It seemed to me that one could organise it by starting with an overview which shows (1) how things fit together and (2) gives some idea about whether we are covering all the options.
The following table is my attempt at this.

First let me try to list everything an OAIS might be, in the context of the OAIS standard, and without getting into specific disciplines.
The bulk of OAIS is about essentially a single organisation – note that this does not mean that the OAIS is contained in one room or one building or even one country. It does mean that it is within a single organisation.
What else might an OAIS be? Looking at Fig 2-1 of OAIS and reading the definitions we see that it could be a Producer or a Consumer. Although the glossary does not say that explicitly, an OAIS could be Management – maybe that should be clarified.
Now looking at the inside of an OAIS, in general terms, one can say that an OAIS may be a service user or a service provider.

I hope this is exhaustive.

Then one can think of all the “combinations” – it could be an OAIS by itself, or with one or more other OAISes and other things which are not OAISes.

We can draw up the following table which tries to position the various pieces of text which are in the updated OAIS draft in a way which I hope is reasonably self-explanatory.


All in a single OAIS

Including other OAIS

Including non-OAIS

OAIS role ↓


Independent i.e. using information such as RepInfo which it is preserving

Collaborating archive

Independent archive


Independent i.e. creating information to be preserved

Collaborating archive

Independent archive


Independent archive



Service user

Independent i.e. using its own services to preserve

Outer OAIS

General distributed archive

Federated archives and
Archives with shared functional entities

Service provider

i.e. providing services to itself

Independent archive

Inner OAIS

If this seems reasonable then I can provide introductory text and a reorganisation of the chapter. The question marks indicate combinations which probably do not need any additional text – unless someone can suggest something.




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