Hi Michael,
I'm glad you managed to get it working and that you reported back on your
progress. Also, when you feel you have added something extra that others
could use, you're welcome send the patch to our Jira. Howtos are also very
welcome for our wiki! I don't think we have anything on redundancy yet. And
the Solr page I wrote could use improvements in many places!
Regarding the best solution for Solr availability, I would recommend you to
run a separate Solr server if you can. There's nothing specific about the
embedded Solr in DSpace - just copy over the statistics core (both conf and
data), point DSpace(s) to it and you're good to go. The DSpace specific
things are described by schema.xml, which lives in the core's conf
directory. Just mind Solr versions, DSpace 3.0 contains Solr 3.5.0.
Even if you don't have a machine to spare, you could always run 2 tomcat
instances on one server to keep Solr safe in case DSpace crashes or locks
up its Tomcat instance (usually because of memory exhaustion). If you want
to go even further, Solr is designed so that it can be made redundant (see
eg. [1] or [2]).
[1] http://wiki.apache.org/solr/CollectionDistribution
[2] http://wiki.apache.org/solr/SolrReplication
Regards,
~~helix84
Compulsory reading: DSpace Mailing List Etiquette
https://wiki.duraspace.org/display/DSPACE/Mailing+List+Etiquette
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