Acquia Search Configuration - Settings

Settings

Administer > Site configuration > Acquia Search (?q=admin/settings/apachesolr)

"Your site has contacted the Apache Solr server." - This message indicates your site can contact the Apache Solr server.
Search is being provided by the Acquia Search network service: search.acquia.com - The service and search server your site is connected to.
Number of items per cron run - if you encounter service timeouts or memory errors, reduce the number of items to be indexed during each cron run.
Results per page - the number of search results to be shown per page.
If your site cannot connect to the Acquia Hosted Search Service - Define what your site should do if Acquia's hosted search index is temporarily unavailable.
Add a new content recommendation block - link to recommendation block creation and configuration page.
Enable spellchecker and suggestions - This is often known as the "Did you mean ... ?" feature. Apache Solr learns how to spell from the contents of your site index. If users enter a word that is rarely or not at all present on your site, it thinks the word might be a misspelling and suggests similar words. For example, if the string "Drupal" is present on your site, entering "Durpal" would result in "Did you mean Drupal?".

Extra help messages for administrators - Toggles display of administrator help.
Index write access - When set to the default value, "Read and write (normal)" new content will be indexed during cron runs. "Read only" will stop any new content being indexed, but still provide search results from the existing index. This can be useful during site testing and development.
Make Apache Solr Search the default - This needs to be enabled to use Acquia Search. If the Acquia Search service is unavailable, you can define a fallback to core Drupal search further up on the settings page.
Use Apache Solr for Taxonomy links - If enabled, links to taxonomy term listings will be generated by Acquia Search instead of by Drupal itself.
Allow advanced syntax for all searches - By default, all searches can include wildcards ("*" for multiple characters, "?" for a single character) Enabling this option allows the use of other advanced search syntax, including AND, OR, NOT and others. For more information and complete syntax options, see the guide to Apache Lucene - Query Parser Syntax

Note: searches may not begin with a wildcard or other logical operator.