Hi Keisuke and Mike,

I read the current architecture draft ogsa-d-wg has up on their site, and there appears to be no conflicts. They do mention non-master replication in the context of "peer-to-peer". I refered to these a little differently in terms of "push", "pull", and "bi-directional". Mike, did you find the use cases up on ogsa-d or just through communications with Steven? I am working to continue to add detail to the replication presentation. I am attempting to define a "ReplicaElement" structure which will have properties of a unique instance id, replica id, the actual value of the data, modification and author history, and security constraint data. This one structure should be able to be used to represent a piece of data, a collection, a graph (tree), and a database, for a collection of replicas. Hopefully I can get this out before ogsa face2face to help stimulate the replication topics.

Pete Ziu
571.235.0208 (c)
mailto:pete@ziu.net (h)
mailto:5712350208@tmomail.net (sms)













To Michael Behrens <behrens@r2ad.com>, acs-wg@ggf.org
cc
bcc
Subject Re: [ogsa-d-wg] [acs-wg] Data Use Case Scenarios document
Keisuke Fukui <kfukui@labs.fujitsu.com>
Sent by: owner-acs-wg@ggf.org
08/09/2005 04:28 PM ZE9
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Hi Mike

# I removed ogsa-d-wg from recipients since non-subscriber post will
# be rejected:-)


Thanks for a heads up! So they include a data replication use case
in their scope. Did you find any conflicts in their doc, especially
between their requirements and our current specification?

-Keisuke

Michael Behrens wrote:
> Albiet a bit late, I just read the use-case document - looks good. With
> regard to replication, it seems that the ACS-WG might need to consider
> that portion so I'm also CC'ing this to the ACS team. I presume the
> use-case is available from the OGSA-D-WG site.
> Thanks!
>
> Stephen Davey wrote:
>
>> Hi everyone,
>> Attached is the beginnings of a list of Data Use Case Scenarios, which
>> also includes the template sub-sections for each use case described.
>>
>> I have basically taken the original OGSA use case template and merged
>> the "Use Case Situation Analysis" section into the "Summary" section 2.1
>> and renamed section 2.4 slightly. I have also deleted sections 2.5 & 2.6
>> since security and performance considerations will be part of the Data
>> Architecture document and would probably have just led to repetition.
>> This then leaves the sections:
>> 2.1 Summary
>> 2.2 Scenarios
>> 2.3 Involved Resources
>> 2.4 Functional Design
>> 2.5 References
>>
>> Hopefully these sections will be all that is needed for the Data
>> (infrastructure) Use Cases that we have. Any comments can be discussed
>> on Wednesday 15th June.
>>
>> Cheers,
>> Stephen.
>>
>> -------------------------------------------------------------------
>> Stephen Davey, NextGrid Software Architect,
>> National e-Science Centre,
>> 15 South College St., Edinburgh, EH8 9AA, UK
>> Tel: +44 131 6 509820
>>
>>
>>
>>
>
>