Hello,

protecting one of my file servers I always getting the following error:

The replica of F:\ on xxx is inconsistent with the protected data source. All protection activities for data source will fail until the replica is synchronized with consistency check. (ID: 3106)

DPM has detected a checksum mismatch during data transfer over the network (ID: 30087)

I have protected drive E: of the same server without any problems.

I have tried to run a consistency check several times, with no success.

Any idea, how to troubleshoot this error?

• Edited by Guido Peter Wednesday, October 15, 2014 9:56 AM

I had the same problem , disabled everything about checksum on ethernet adapter , etc and nothing fixed the problem. 

So , I ended up disabling the checksum data on DPM server and the problem is gone . Tested the backup later on and everything looks good . So , if you want to disable the checksum data on DPM server , do it by your own risk please . Make sure that you use DPM powershell :

PS>Get-DPMGlobalProperty -DPMServerName  server.domain.com IsNetworkChecksumRequired

True

PS>Set-DPMGlobalProperty -DPMServerName server.domain.com -IsNetworkChecksumRequired 0

PS>Get-DPMGlobalProperty -DPMServerName  server.domain.com IsNetworkChecksumRequired

False

Restart the server and retry the job .

• Edited by TuxGB Thursday, July 09, 2015 5:00 AM

Hi,

I have configured SNP as you suggested, but I had no success. I have tried to start a backup for this drive local on the server, no success. Error message: "Backup of volume F: has failed. The specified backup disk cannot be found."

After changing the "Maximum size:" to "No limit" in shadow copies, settings, for this drive, I was able to run a local backup.

But consistency check is still not successful.

 Did you ever have any luck fixing this?  I have run into a similar issue and and had absolutely no success fixing it.  I have other backups for the same server working fine, but not this one.  I also have a number of other servers and backups outright failing as well.

Try disabling the checksum data on DPM server .

PS>Get-DPMGlobalProperty -DPMServerName  server.domain.com IsNetworkChecksumRequired

True

PS>Set-DPMGlobalProperty -DPMServerName server.domain.com -IsNetworkChecksumRequired 0

PS>Get-DPMGlobalProperty -DPMServerName  server.domain.com IsNetworkChecksumRequired

False

Restart the server and retry the job .

• Edited by TuxGB Thursday, July 09, 2015 4:59 AM