Hi James,
I read your DSpace clustering HOWTO
(http://wiki.dspace.org/index.php/HOWTO_Clustering) and I have some
proposals for improvements.
In the proposed architecture, you could directly attach the backends to
the RAIDb-1 controllers and have a full RAIDb-1 configuration.You can
also have the top controllers use RAIDb-2 but you should be careful
about table distribution to make sure that no distributed join is
required (not supported) and that you always have at least one copy of
each table available from each controller in case of a controller outage.
As a rule of thumb, you always want to replicate tables as much as you
can except for heavily written tables where you can reduce the number of
replicas to prevent too much slowdown when writing to these tables.
Don't hesitate to post on the mailing list if you need any help.
Thanks for your interest in Sequoia,
Emmanuel
--
Emmanuel Cecchet
Chief Scientific Officer, Continuent
Blog: http://emanux.blogspot.com/
Open source: http://www.continuent.org
Corporate: http://www.continuent.com
Skype: emmanuel_cecchet
Cell: +33 687 342 685
_______________________________________________
Sequoia mailing list
[email protected]
https://forge.continuent.org/mailman/listinfo/sequoia
