Check_MK Service "flaps" on one Synology NAS with snmp

Troubleshooting
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Hi all,

we run a recent check 1.6.0 installation and monitor some Synology NAS by snmp.
All but one are monitored well, without any monitoring related problems.
But one NAS has regularly a critical state for the Check_MK service.
The minimum total execution time is 2.1s, the max. 60 s Average therefore ± 16s
The critical state is all 20.5 Minutes, which would give a hint to some regular job running on that NAS, but I could not see any. Also the NAS side Systemtools did not reveal any information that help.
The only difference between that NAS and others is, that it has and expansion chassi with 12 more disks.
Do you have any hints or suggestions for selfing that “hick up” :slight_smile:

Thanks and regards. Götz

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