> For the complete documentation index, see [llms.txt](https://docs.buildings.ability.abb/collection/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.buildings.ability.abb/collection/english-v14/documentation/einstellungen/system.md).

# System

## System

<div data-full-width="true"><figure><img src="https://content.gitbook.com/content/Nyvwhz1kEMXcHf4HLuZ8/blobs/aQSHB9zh52CUKST0zqp2/System.png" alt=""><figcaption></figcaption></figure></div>

<table data-header-hidden data-full-width="true"><thead><tr><th width="60"></th><th width="178"></th><th></th></tr></thead><tbody><tr><td><strong>[A]</strong></td><td>Host</td><td>Specify the hostname.</td></tr><tr><td><strong>[B]</strong></td><td>System Owner</td><td>System administrator with unrestricted rights. Required for system notifications.</td></tr><tr><td><strong>[C]</strong></td><td>Default language</td><td>Defines the display language of Eliona (German, English, Italian, French).</td></tr><tr><td><strong>[D]</strong></td><td>Primary color</td><td>Defines the main color of the system controls.</td></tr><tr><td><strong>[E]</strong></td><td>System logo</td><td>Allows uploading a custom logo for the system.</td></tr><tr><td><strong>[F]</strong></td><td>Version</td><td>Shows the currently installed and the latest available version of Eliona.</td></tr><tr><td><strong>[G]</strong></td><td>Audit Log Limit</td><td>If disabled, audit logs are stored indefinitely. If enabled, storage is carried out according to "Storage Time Log".</td></tr><tr><td><strong>[H]</strong></td><td>Storage Time Log</td><td>Specifies how long logs remain stored before they are automatically deleted.</td></tr><tr><td><strong>[I]</strong></td><td>Storage Time Trend</td><td>Defines how long trend data is stored.</td></tr><tr><td><strong>[J]</strong></td><td>Smart Batch Mode</td><td><p>Control of data processing:</p><ul><li><strong>Plain:</strong> Data is inserted individually immediately.</li><li><strong>Batch:</strong> Data is collected for a configured time and then stored as a single query.</li><li><strong>Smart Batch:</strong> Similar to Batch, but only the last value is stored for frequently changing data.</li></ul></td></tr><tr><td><strong>[K]</strong></td><td>Cold Storage</td><td>Indicates when trend data is transferred to a more space-efficient format to reduce storage space.</td></tr><tr><td><strong>[L]</strong></td><td>Storage Time From</td><td>If <strong>Cold Storage</strong> is enabled, the period after which the data is transferred to cold storage can be defined here.</td></tr><tr><td><strong>[M]</strong></td><td>Web server certificate</td><td>Shows the current status of the stored certificate. Using the button <strong>Update</strong> new certificate files (.crt / .key) can be uploaded. After replacement, the Eliona instance is automatically restarted and is accessible again via a secure HTTPS connection.</td></tr></tbody></table>

{% hint style="info" %}
To receive system notifications, a *System Owner* (system administrator) must be entered. System notifications provide information about communication problems, API parameters, and other system-critical information.
{% endhint %}

{% hint style="info" %}
To set the retention period of the data to **indefinite** please contact our team.
{% endhint %}


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