# enaio® fulltext

enaio® • 11.0 »

enaio® fulltext is based on the add-on software Elasticsearch. You estimate the size of the full-text database as follows:

25 to 30 GB HDD will be needed for roughly one million objects in the database (depending on document content and diversity). An additional 25 to 30 GB is required per replica. Replicas must be used in cluster installations (more than one Elasticsearch node). They are used to ensure data availability as well as the performance and hence scalability of enaio® fulltext.

The Elasticsearch database cannot be on \\UNC paths\ or on connected network drives. It must be located locally. Elasticsearch is always a cluster with at least one node. It is recommended that you always select an odd number of nodes when scaling Elasticsearch.

Scaling is recommended once the size of the database on the HDD (without replicas) exceeds the RAM available to Elasticsearch by a factor of ten. At this point, the cluster should be extended with max. 64 GB RAM per Elasticsearch node.

Working in the database places relatively high demands of HDD resources. It is not necessary to use SSD premium storage memory. Follow this general rule of thumb: The less RAM is available, the faster the HDD needs to be in order to keep pace with contents from the database.

Navigation | Navigate through the help pages using the table of contents on the left. If it is not displayed when the window width is small, you can temporarily show it via the hamburger menu on the right. Use the arrows on the toolbar to navigate to the next/previous page. You can show hidden areas. Use the toolbar to show all hidden areas at once:
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Clicking the product icon in the header returns you to the beginning of the current area. Use the toolbar to access the initial page:

Full-text Search | The search does not feature case sensitivity. A search term is also found as part of a string. Multiple search terms in the exact order as entered will be found if they are enclosed in quotation marks (").
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Boolean Operators | You can use the following Boolean operators:
AND | Finds the pages that contain all search terms. Spaces, '+', and '&' function the same.
OR | Finds the pages that contain at least one of the search terms. The pipe character (|) functions the same.
You can combine search terms and Boolean operators using parentheses. Example: Paul AND (Peter OR Meyer)
The current portal area is used for the search. You can use Google to search through all portal areas. Example: follow-ups site:help.optimal-systems.com

Please contact the OPTIMAL SYSTEMS technical editorial staff for questions and comments regarding the documention at dokumentation(at)optimal-systems.de.