v.25.4New Feature

Support using custom disks to store databases

Support using custom disks to store databases metadata files. Currently it can be configured only on a global server level. #77365 (Tuan Pham Anh).
Support for configuring custom disks to store database metadata files in ClickHouse.

Why it matters

This feature allows users to specify custom storage disks for database metadata files, providing flexibility in how and where metadata is stored. It helps optimize storage management and resource allocation by separating metadata storage from other data, enhancing performance and maintainability.

How to use it

Currently, the configuration is applied at the global server level. Users can define custom disks in the server configuration files and set the storage location for database metadata files accordingly.