More:
Setting up the Bundled Solr Indexing Server
Setting up an External Solr Indexing Server
Migrating from Local Bundled Solr to External Solr Indexing Server
Migrating from Local Lucene Files to External Solr Indexing Server
Migrating from Local Lucene Files to Bundled Solr Indexing Server
Migrating to Solr Indexing Server Troubleshooting