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> **Documentation Index:** Fetch the complete configuration index at https://ydb.tech/docs/en/llms.txt

# Concepts for Cluster Administration

This section supplements the general section [Concepts YDB](https://ydb.tech/docs/en/concepts/index.md?version=main) with theoretical materials that are primarily relevant for cluster administration.

Main topics:

* [YDB System Requirements and Recommendations](https://ydb.tech/docs/en/devops/concepts/system-requirements.md?version=main)
* [CPU settings for production](https://ydb.tech/docs/en/devops/concepts/cpu-production-settings.md?version=main)
* [Storage capacity planning](https://ydb.tech/docs/en/devops/concepts/capacity-planning.md?version=main)
* [Versioning YDB](https://ydb.tech/docs/en/devops/concepts/versioning.md?version=main)
* [Maintenance without downtime](https://ydb.tech/docs/en/devops/concepts/maintenance-without-downtime.md?version=main)

See also:

* [YDB Deployment Options](https://ydb.tech/docs/en/devops/deployment-options/index.md?version=main)
* [YDB Cluster Configuration](https://ydb.tech/docs/en/devops/configuration-management/index.md?version=main)
* [Observability overview](https://ydb.tech/docs/en/devops/observability/index.md?version=main)
* [Backup and Recovery](https://ydb.tech/docs/en/devops/backup-and-recovery.md?version=main)