So I recently installed Veeam (free edition) on all of my windows VMs and physical devices. They all backup to a share on my Unraid server. All of them work except for my gaming PC (was working fine for a while but now wont). When it tries to backup the data I get the following. 

 

1/3/2022 9:10:24 PM :: Error: Shared memory connection was closed. Failed to upload disk. Agent failed to process method {DataTransfer.SyncDisk}. Exception from server: An unexpected network error occurred. Failed to flush file buffers. File: [\\192.168.1.18\Big Red C drive\Veem Backup Location\BigRed\Job BIGRED\Job BIGRED2022-01-03T205944.vbk]. Cannot handle notification about a written block. Failed to download disk.

 

The only thing different with this computer is that it has a 10gb nic (unraid has 10gb nic as well) It is not a point to point though, it goes into a switch that has 10gb and 1gb ports for the whole network. 

 

Is there something that needs to be changed on my SMB share or on my network card? 

 

 

tower-diagnostics-20220104-0908.zip

i had the same issue.
after setting write mode from "auto" to "reconstructive" everything was fine.
i think the drives need to long to write anything and veeam will get like a timeout.

Thanks!  I ended up installing the community edition server as a VM on a Windows Server with one 8TB drive I had laying around. 

I decided that nightly writes to the share from multiple machines was a bit excessive of a task (especially during windows updates and new games being installed) and this way I can't accidently fill up an entire array drive's free space or accidently create multiple TBs of backups and have to resolve that in order to add more tv shows to my plex.