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---
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slug: /en/operations/server-configuration-parameters/
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sidebar_position: 54
sidebar_label: Server Configuration Parameters
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pagination_next: en/operations/server-configuration-parameters/settings
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---
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# Server Configuration Parameters
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This section contains descriptions of server settings that cannot be changed at the session or query level.
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These settings are stored in the `config.xml` file on the ClickHouse server.
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Other settings are described in the “[Settings](../../operations/settings/index.md#session-settings-intro)” section.
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Before studying the settings, read the [Configuration files ](../../operations/configuration-files.md#configuration_files ) section and note the use of substitutions (the `incl` and `optional` attributes).