Allows attaching table parts from a different disk by copying the data instead of creating a hard link.
Why it matters
This feature addresses the limitation where parts could only be attached from the same disk using hard links. By supporting copy-based attach from different disks, it enables more flexible and reliable data management across multiple storage devices.How to use it
When attaching parts from a different disk, ClickHouse will automatically use a copy operation instead of a hard link, allowing seamless attachment of parts stored on separate disks.