Event ID:13568 , Event ID:13508

[guest]

I found some errors on system.One event id is 13568 on 2nd DC. Another id is 13508 on 1st DC. There are summary below list.

Event Type: Error
Event Source: NtFrs
Event Category: None
Event ID: 13568
Date: 1/18/2010
Time: 4:49:58 PM
User: N/A
Computer: CNYTRAD02
Description:
The File Replication Service has detected that the replica set "DOMAIN SYSTEM VOLUME (SYSVOL SHARE)" is in

JRNL_WRAP_ERROR.

Replica set name is : "DOMAIN SYSTEM VOLUME (SYSVOL SHARE)"
Replica root path is : "c:\windows\sysvol\domain"
Replica root volume is : "\\.\C:"
A Replica set hits JRNL_WRAP_ERROR when the record that it is trying to read from the NTFS USN journal is not

found. This can occur because of one of the following reasons.

[1] Volume "\\.\C:" has been formatted.
[2] The NTFS USN journal on volume "\\.\C:" has been deleted.
[3] The NTFS USN journal on volume "\\.\C:" has been truncated. Chkdsk can truncate the journal if it finds corrupt

entries at the end of the journal.
[4] File Replication Service was not running on this computer for a long time.
[5] File Replication Service could not keep up with the rate of Disk IO activity on "\\.\C:".
Setting the "Enable Journal Wrap Automatic Restore" registry parameter to 1 will cause the following recovery steps

to be taken to automatically recover from this error state.
[1] At the first poll, which will occur in 5 minutes, this computer will be deleted from the replica set. If you do

not want to wait 5 minutes, then run "net stop ntfrs" followed by "net start ntfrs" to restart the File Replication

Service.
[2] At the poll following the deletion this computer will be re-added to the replica set. The re-addition will

trigger a full tree sync for the replica set.

WARNING: During the recovery process data in the replica tree may be unavailable. You should reset the registry

parameter described above to 0 to prevent automatic recovery from making the data unexpectedly unavailable if this

error condition occurs again.

To change this registry parameter, run regedit.

Click on Start, Run and type regedit.

Expand HKEY_LOCAL_MACHINE.
Click down the key path:
"System\CurrentControlSet\Services\NtFrs\Parameters"
Double click on the value name
"Enable Journal Wrap Automatic Restore"
and update the value.

If the value name is not present you may add it with the New->DWORD Value function under the Edit Menu item. Type

the value name exactly as shown above.

For more information, see Help and Support Center at

http://go.microsoft.com/fwlink/events.asp.




I want to know If I should do what the event told me and how to solve the questions?
Thank you.

[guest]

No - backup SYSVOL on one of your "healthy" DCs and use the procedure outlined in http://support.microsoft.com/kb/290762/
As far as avoiding similar problems in the future, follow recommendations outlined in http://support.microsoft.com/default.aspx/kb/292438