# Replace a Failed Drive in Synology: Compatibility and Repair

Canonical: https://cloudzat.com/replace-failed-drive-synology/
Full Markdown: https://cloudzat.com/replace-failed-drive-synology/index.md
Cluster context: https://cloudzat.com/ai/synology-technical/context.json

Purpose: Replace a failed Synology drive using bay identification, compatibility checks, hot-swap rules, Storage Manager repair and rebuild verification.
Direct answer: A physically compatible SATA disk can still be the wrong repair drive if its usable capacity, sector format or current Synology support does not satisfy the existing array.

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