dfs replication event 4104 repeating
Posted on 2012-09-18
I have a DFS replication problem between two Windows 2008 R2 SP1 servers. One of the server (server A, domain controller) is hosting replicated files from at least 8 servers across a WAN without any issues but in the case of one of the servers (server B, domain member), there seems to be a serious problem.
On server B, I have created a namespace to send four folders to the server A. Initially, I used Robocopy for two of the folders to avoid replicating 60 GB over the Internet.
At first, the replication started and then after a few hours to a few days (depending on the size of the folders), I got a message with Event ID 4104 The "DFS Replication service successfully finished initial replication on the replicated folder at local path E:\folder".
Then, for a reason that I don't understand, I started getting event IDs 4202, "The DFS Replication service has detected that the staging space in use for the replicated folder at local path E:\folder is above the high watermark. The service will attempt to delete the oldest staging files. Performance may be affected". and then event IDs 4204 "The DFS Replication service has successfully deleted old staging files for the replicated folder at local path E:\chateauroyal\shared. The staging space is now below the high watermark".
And then, I receivied again an event ID 4104 for the same folder "DFS Replication service successfully finished initial replication on the replicated folder at local path E:\folder" even if that folder had already been initially synchronized.
So it seems that initial replication is always restarting just about every few days. This is not normal and this is the only server exhibiting this behaviour. And worse, it seems to be eating up more and more space in sysvol folder of the affected drive.
In an attempt to fix the issue, I tried deleting the namespace and folders, clean up all the hidden "DFS private" folders and even cleaned the System Volume Information folder that was filled with some staging files up to the point that the hard drive was close to run out of disk space. Then I recreated the namespace and folders and again, the problem is still present. I even removed and reinstalled DFS on server B.
If I test the replication itself, it seems to be OK, meaning that folders and files are moving through the folders but I am afraid that my hard drive will fill itself again from pre-staging files.
As for Server A, I am only getting replication errors when Windows Server Backup is running (all my servers are backed up at 23:30 every night) and after the backups are done, all folders are reconnecting normally. I may also have a few disconnections once in a while when the VPN slows down or disconnects for a few seconds.
I am really out of ideas (short of calling Microsoft). Anyone can help?