Synology DS923+ — Error codes & fixes
Troubleshooting guide for the Synology DS923+. Diagnose an error code and find the fix.
Slow file transfer
slow-transferFile transfers are slow, often from a network bottleneck, a failing drive, or a fragmented volume.
Source: ProductDB enrichment catalog
Confidence: 85%
Verified Aug 8, 2026
System update failed
update-failedThe NAS cannot complete a DSM/OS update, often from a network issue or low storage.
Source: ProductDB enrichment catalog
Confidence: 85%
Verified Aug 8, 2026
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