drive-failed Troubleshooting

Drive failed / degraded on the Synology DS923+

Source: Synology Knowledge Center — error codes Confidence: 90% Verified Aug 9, 2026

A drive in the array has failed or the volume is degraded, risking data loss.

How to fix Drive failed / degraded

Identify the failed drive

Check the NAS status page to identify the failed drive and its bay.

Source: Synology Knowledge Center — error codes Confidence: 90% Verified Aug 9, 2026

Difficulty: ★ Est. 5 min

Replace the drive

Replace the failed drive with a compatible one and rebuild the storage pool.

Source: Synology Knowledge Center — error codes Confidence: 90% Verified Aug 9, 2026

Difficulty: ★★ Est. 30 min

Parts needed: Synology DS923+ SSD Cache, Synology DS220+ SSD Cache, Synology DS1522+ SSD Cache

Replacement parts for the Synology DS923+

Synology DS923+ NAS Drive Synology DS923+ SSD Cache Synology DS923+ RAM Module Synology DS923+ Power Supply Synology DS923+ Drive Caddy Synology DS220+ NAS Drive Synology DS220+ SSD Cache Synology DS220+ RAM Module Synology DS1522+ NAS Drive Synology DS1522+ SSD Cache Synology DS1522+ RAM Module

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