DFSR keeps hitting a USN journal wrap loop

Hello Pate Adiya,

The Event ID 2202 (USN Journal Wrap) occurs when the USN journal on a volume is too small to keep up with the rate of changes, causing DFSR to lose track of updates and fall into a replication loop. This is common in branch office servers with heavy workloads or limited disk resources.

To stabilize replication, you can increase the USN journal size by modifying the registry setting under HKLM\System\CurrentControlSet\Services\Ntfs\JournalSizeInMB for the affected volumes. A typical recommendation is to set this value to at least 512 MB or higher depending on the churn rate of files. After making the change, reboot the server so the new journal size takes effect. It’s also important to ensure that the underlying disk has sufficient free space, since the journal is stored on the same volume.

In addition, review DFSR health with dfsrdiag pollad and dfsrdiag backlog to confirm replication resumes normally after the adjustment. Monitoring disk usage and journal growth over time will help you fine-tune the size to match your environment.

I hope the response provided some helpful insight. If you find this answer useful, please hit “accept answer” so I know it addressed your concern.

Jason