Known Issues and recommended solutions on Secondary Protection (Disaster Recovery)

1.       We have seen issues under Secondary DPM server when production server node is expanded in DPM UI, you do not see any datasources enumerated. As a result of this, you cannot add secondary protection for any of the datasources of that production server. This could happen due to one of the following reasons


a.       One of the Protection Groups in Primary DPM has a special character in its name (like &, %, >. < etc) or one of the protected members of Primary DPM has special characters.


b.      DPM Writer is not started in Primary DPM server


c.       DPM Agent (by name DPMRA) crashed on Primary DPM server or Production server. If this is the case, you will find eventlog entries in respective servers.


d.      Secondary DPM server could not enumerate datasources from production server.  Run the powershell script under section “Check-ProductionServer” in the attached file on Secondary DPM Server. This will tell you whether Secondary DPM can enumerate datasources on production server or not. Steps to run this script


                                                               i.      Copy the contents under the section “Check-ProductionServer” in the attached file to a file named as “Check-ProductionServer.ps1”.


                                                             ii.      Run the powershell script “Check-ProductionServer.ps1” on a powershell window on Secondary DPM Server


e.      You had manually installed x64 DPM agent on top of the DPM 20007 x64 Primary DPM. Normally, this is blocked. You cannot manually install DPM agent on a DPM server. But, we have a known issue on X64 version which unblocks this scenario. If this is the case, you will see an entry for “Microsoft System Center DPM Protection Agent” in Add/Remove programs.


 


General solutions for this problem:


                                 i.            Make sure that Protection Groups or Protected members in Primary DPM don’t have any special characters in their names. Rename all such Protection Groups in Primary DPM and retry secondary protection


                               ii.            Make sure that DPM Writer is enabled and started/running on the Primary DPM server


                              iii.            Make sure that DPMRA service hasn’t crashed on Primary DPM server or production server while adding secondary protection through Secondary DPM server.


                             iv.            Disable and Enable protection for the production server which exhibits symptom 4 above.


                               v.            Uninstall the “Microsoft System Center DPM Protection Agent” from Primary DPM server through Add/Remove programs. Run the batch script under section “UpdatePrimaryDPM” in the attached file on Primary DPM server. Steps to run this script.


          Copy the script  under the section “UpdatePrimaryDPM” in the attached file to a new batch file called UpdatePrimaryDPM.cmd


          Run UpdatePrimaryDPM.cmd <DPM Intall Path>


E.g.: UpdatePrimaryDPM.cmd “C:\Program Files\Microsoft DPM\DPM”


2.       You get prerequisite not installed error while adding datasources for secondary protection. This might happen if the production server is a domain controller. Please contact Microsoft support if this is the case.


 


Thanks


Madhan S


 

IssuesWithSecondaryDPM.txt