DS918+ keeps lossing it's DSM

[uzzi]

I have a strange issue with my DS918+

I start up the NAS normally.
After 30-45 minutes the NAS beeps 3 times, all lights go out except of the power button which flashes blue continuously
When I restart the NAS, I need to install DSM again. No data is lost
The NAS runs normally again for 30-45 minutes and then history repeats itself

Does anyone have an idea what is going on ?

Thanks for your help !

uzzi

 

[Rusty]

Battery problem? HDD problems? Looks like the DSM partition is unable to remain installed and configured.

Are the drives new or used?

 

[uzzi]

Hello Rusty,

Thanks for your quick feedback.

NAS and HDD were bought end of 2019.

During the time that the NAS is running I checked the HDD and RAID health and no issues are being reported. Everything is green. Once I have installed the DSM again, all the data on the HDD is still available.

-- post merged: 17. Feb 2023 --

Some additional info : the Synology website describes a way to check the health of the mainboard : Mijn Synology NAS kan niet worden opgestart en de Power LED -indicator blijft knipperen. Wat kan ik doen? - Synology Kenniscentrum
I ran this test and the mainboard should still be OK.

 

[uzzi]

Tested with the Power supply of another Synology NAS, but the problem persists

 

[EAZ1964]

what raid configuration do you use?

Did you try to remove the disks/case, clean out your DS using vacuumcleaner and brush, reseat the disks and try again? It could be something heating up over time.

 

[Rusty]

Tested with the Power supply of another Synology NAS, but the problem persists

I would advise then to open up a ticket and have Syno support have a look at the logs. Maybe they will detect the issue and see why the DSM installation keeps failing over time.

 

[Telos]

Reset mode 2 will reinstall DSM... Might be worth a go.