DFSR Issues \ Rebuilt and won't fully sync

David M. Dinner 1 Reputation point

Hi. Last week we had a complete DFSR meltdown, the best we could explain it is that a nodes database was damaged and replication stopped working. In order to fix it we pre-seeded the environment and cloned the database following the instruction here: https://techcommunity.microsoft.com/t5/storage-at-microsoft/dfs-replication-initial-sync-in-windows-server-2012-r2-attack-of/ba-p/424877

In this replication group we do not have a huge volume, a little over 1TB with 1.5m files or so, we also have the staging size set to 1TB (which I know is high).

Our issue the backlog on the primary file server will start ~300k files, then go down to about 50k then shoot back up to 300k. It has repeated this process 4 times now each time the high number is a tad lower. Replication is really not working well here. There are no errors in the logs but more sharing violation warnings than I would expect.

The other server started out with a backlog of ~50k files, went down to zero and other than a few spikes near 1k stays there and replication works.

Is this expected, is this one of those things where we just wait?

Thanks for any help!

Windows Server 2016
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  1. Limitless Technology 39,426 Reputation points

    Hello @David M. Dinner

    Considering the amount of files (1,5 Million) this is an expected results, due to the pre-staging operations.

    More information on initial replication phases: https://learn.microsoft.com/en-us/previous-versions/windows/it-pro/windows-server-2012-r2-and-2012/dn495052(v=ws.11)

    Hope this helps with your query,


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