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WINDOWS SERVER - Troubleshooting DFS Replication Synchronization (non- SYSVOL replica sets)



Article Summary: This article details steps on troubleshooting DFS replication synchronization on non-SYSVOL replica sets
Note: DFSR is a technology used to replicate the data from DFS namespaces across a group of servers called a replication group. It is important for these members to be as synchronized as the resources allow. These are the recommended troubleshooting steps for DFS Replication group synchronization.


1. Check for backlogs:

a. Run a diagnostic report.

i. Server 2012 and later - Click Server Manager, click Tools, then click DFS Management
Server 2008, 2008 R2 - Click Start -> Administrative Tools -> DFS Management
ii. Expand Replication
iii. Right-click on the replication group for the namespace.
iv. Click Create Diagnostic Report
v. Choose Next all the way through the Wizard.
vi. The report will open automatically in the default web browser. It will also be available in
C:\DFSReports when the browser is closed.

b. From an elevated command prompt run 'DFSDiag /TestDFSIntegrity /DFSRoot:<DFS root path> /Full'
and troubleshoot the results. Pipe results to a file ( <cmdstring> > dfsdiag.txt) to facilitate item review.

c. Run a propagation test using the same routine as the diagnostic report, but choose Propagation Test on
the initial page instead of Health Check.

2. Check for delays:

a. Validate NIC drivers are up to date.

b. Validate anti-virus software is DFS-aware (i.e., correct exclusions are set) or consider temporarily disabling
as a means of troubleshooting.

c. Check bandwidth throttling

i. Server 2012 and later - Click Server Manager, click Tools, then click DFS Management
Server 2008, 2008 R2 - Click Start -> Administrative Tools -> DFS Management
ii. Expand Replication
iii. Click on the replication group for the namespace.
iv. Click on the Connections tab.
v. Right-click the replication group member and choose Properties.
vi. Ensure "Enable replication" and RDC are checked.
vii. Click the Schedule tab. Click View Schedule.
viii. Make sure that bandwidth usage says "Full". On the other hand if it is throttled, consider increasing to see if
it has a positive impact on performance.

d. Check the Staging Quota. The default is 4Gb.

i. Click Server Manager, click Tools, then click DFS Management.
ii. Expand Replication
iii. Click on the replication group for the namespace having issues.
iv. Right click each member of the replication group in the Memberships tab.
v. Click the Staging tab.
vi. If 4Gb is not sufficient based on the file sizes in the data set, consider increasing.
Advanced Staging area sizing:
http://blogs.technet.com/b/askds/archive/2011/07/13/how-to-determine-the-minimum-staging-area-dfsr-needs-for-a-replicated-folder.aspx


ADDITIONAL INFORMATION:

Background information on DFS-R implementation can be found at:
http://www.adshotgyan.com/2010/12/dfsr-replication-group-in-windows-2008.html





Quick Tips content is self-published by the Dell Support Professionals who resolve issues daily. In order to achieve a speedy publication, Quick Tips may represent only partial solutions or work-arounds that are still in development or pending further proof of successfully resolving an issue. As such Quick Tips have not been reviewed, validated or approved by Dell and should be used with appropriate caution. Dell shall not be liable for any loss, including but not limited to loss of data, loss of profit or loss of revenue, which customers may incur by following any procedure or advice set out in the Quick Tips.

ID del artículo: SLN289687

Última fecha de modificación: 07/07/2015 02:40 PM


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