What should I do if I'm experiencing the NAS unexpected Reboots/System Hang?
Applicable Products:
- All NAS series
If you are experiencing NAS unexpected reboots/system hang, follow the procedures below to resolve the issue.
Check the memory module installed on the NAS.
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If you changed the memory modules, replace the memory modules with the original one shipped with the NAS
Note: Use only QNAP memory modules to maintain system performance and stability. For NAS devices with more than one memory slot, use QNAP modules with identical specifications.
Important: Using unsupported modules may degrade performance, cause errors, or prevent the operating system from starting.
Disable Third-Party Apps in App Center
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Login QTS as administrators
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Open App Center
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Disable all Third-Party apps in App Center
- If the issue no longer recurs, enable the third Party app one by one to confirm the cause.
- if the issue still recurs, run the next step
Disable QNAP Apps in App Center
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Login QTS as administrators
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Open App Center
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Disable all QNAP apps in App Center
- If the issue no longer recurs, enable the QNAP app one by one to confirm the cause.
- if the issue still recurs, run the next step
Disable SSD cache if it is enabled
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Login QTS as administrators
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Find Control Panel > Storage & Snapshots > Storage > Cache Acceleration
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Turn off SSD cache
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If the issue no longer recurs,
- Remove SSD cache
- Recreate SSD cache
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if the issue still recurs, run the next step
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Check if the HDD is in the compatibility list
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Login QTS as administrators
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Find Control Panel > Storage & Snapshots > Storage > Disk/VJOB
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Note the disk model
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Compare the disk models with the QNAP compatibility list
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Replace the incompatible disk
- if the issue still recurs, run the next step
Run bad block scan and SMART complete Test on the disks
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Login QTS as administrators
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Find Control Panel > Storage & Snapshots > Storage > Disk/VJOB
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Check all disk status
- Click Action > Scan for Bad Blocks
- Click Disk Health > Test > Complete Test
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Check the result
- If a disk problem is reported, replace the abnormal disk
- if the disks pass the test, contact QNAP support by Service Portal for further assessing this issue.
For further assistance, ask other users and QNAP experts in the community. Go to QNAP Community
