I think this came up talking about
failover though I can’t remember the specifics.
- John
From:
cosmos-dev-bounces@xxxxxxxxxxx [mailto:cosmos-dev-bounces@xxxxxxxxxxx] On Behalf Of Mohsin, Jimmy
Sent: Thursday, July 19, 2007 4:20
PM
To: Cosmos Dev
Subject: [cosmos-dev] COSMOS DC /
MR 2 architecture - Management Domainversus Data / Service Brokers
John,
When you refer to the “multiple data
brokers”, are you referring to multiple data brokers for the SAME data
entity (if so, why would we do that and how would we manage this situation) ?
Or are you referring to multiple data
brokers for DIFFERENT data entities? In this case, the answer is simple:
each Data Broker “knows” what Data Managers it can talk to, and
there is no issues of a conflict.
Comments?
Jimmy
From: Todd, John A
Sent: Thursday, July 19, 2007 4:11
PM
To: Mohsin, Jimmy
Subject: RE: UPDATE: Changes to
the COSMOS / MR 2 architecture
And I think in the case of multiple data
brokers, which data broker clients will be steered towards is still an open topic
of discussion.
- John
From: Mohsin, Jimmy
Sent: Thursday, July 19, 2007 4:10
PM
To: Todd, John A; Muldoon, William
H
Cc: Simmonds, Martin; Stratton,
Paul; Devine, John T; Craddock, Chris
Subject: RE: UPDATE: Changes to
the COSMOS / MR 2 architecture
Yes, true… There will be AT
LEAST one Management Domain and MULTIPLE Data Brokers AND Service Brokers.
Of course, if failover considerations are
factored in, we may end up having multiples of EVERYTHING; this is a topic of
one of the future COSMOS meetings…
From: Todd, John A
Sent: Thursday, July 19, 2007 4:03
PM
To: Mohsin, Jimmy; Muldoon,
William H
Cc: Simmonds, Martin; Stratton,
Paul; Devine, John T; Craddock, Chris
Subject: RE: UPDATE: Changes to
the COSMOS / MR 2 architecture
I think there is ONE Management Domain but
the possibility of multiple Data/Service Brokers.
(though maybe that might have been a
question that came up instead of a statement)
- John
From: Mohsin, Jimmy
Sent: Thursday, July 19, 2007 4:02
PM
To: Muldoon, William H
Cc: Simmonds, Martin; Stratton,
Paul; Devine, John T; Todd, John A; Craddock, Chris
Subject: UPDATE: Changes to the
COSMOS / MR 2 architecture
Bill,
These
topics have been discussed in the past several COSMOS meetings… Here is
my summary on what has transpired thus far during our discussions with the
COSMOS folks.
- The
Data Broker and Management Domain are CONCEPTUALLY distinct architectural
components
- There
is no issue if the implementation does not differentiate these, at least
in the initial stages.
- That
said, once we get to requiring Service Brokers to support our use cases,
the need to keep the Management Domain and Data Brokers distinct will
become very real.
- Please
note that many of the MR 2 key uses will require a Service Broker.
Jack /
John / Marty, please comment if I missed anything…
Thanks,
Jimmy