# Synology Storage Pool Degraded: Diagnose Before Repair

Canonical: https://cloudzat.com/synology-storage-pool-degraded/
Full Markdown: https://cloudzat.com/synology-storage-pool-degraded/index.md
Cluster context: https://cloudzat.com/ai/synology-technical/context.json

Purpose: Diagnose a degraded Synology storage pool, identify the defective drive, protect data, choose a valid replacement and repair redundancy safely.
Direct answer: Keep the NAS workload light, verify important data can be restored elsewhere, and use Storage Manager plus HDD/SSD status to identify the actual defective member before removing anything.

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