DFM communications errors on FAS after network disruption

rdenyer001 — Thu, 05 Jun 2025 06:50:35 GMT

Hi All,

I have a FAS2050 running ONTAP 7.3.5.1.

DFM server is 4.0.2

Problem occurs if there are any network problems between DFM server and FAS2050 e.g. network cable is accidental un-plugged.

Although "normal" data traffic resumes the DFM server reports all sort communications errors like NDMP down, iSCSI down, NFS down.

Also DFM protection and provisioning jobs fails.

If I run "dfm host diags" every thing passes EXCEPT NDMP Connect which fails wth this error "Can't connect to NDMP server XX.XX.XX.XX (port 10000).

I have checked all the NDMP settings and they all look OK

If I do nothing and ignore the many error messages from DFM, it "fixes" itself after 4 - 5 hours.

We dont have this problem with the other two NetApp systems on our network

Any suggestions ?

Regards,

Richard

adaikkap — Thu, 14 Jul 2011 07:50:17 GMT

Sounds bizarre, generally dfm host diag fixes such problem.

But not sure why NDMP alone takes time.

Can you do a diagnose in the NMC for such host and let us know ?

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