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System Center Data Protection Manager storage pool Dynamic Disk goes offline after rebooting

System Center Data Protection Manager storage pool Dynamic Disk goes offline after rebooting

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hotfixHere’s another new KB article we published today. This one describes and issue where a dynamic disk goes offline after a reboot:

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Symptoms

Consider the following scenario:

 

  • You have a Windows Server 2003 Service Pack 2 computer running System Center Data Protection Manager (DPM).
  • The storage pool for DPM is presented through the iSCSI initiator.
  • You add the disk to the storage pool and disk is converted to a dynamic disk.
  • The dynamic disk is used for replica and recovery point backup.

After rebooting the DPM server, the dynamic disk shows to be offline.

Cause

The disk shows to be offline because the recovery point creation fails with the error "Replica is inconsistent".

Resolution

To resolve this issue complete the following steps:

1. Configure the DPM service startup type to Automatic.

2. Reboot the DPM server.

3. Check the Disk in the Disk Management console and verify that it remains online.

More Information

The iSCSI user guide says dynamic disks are not supported on Windows Server 2003, Windows XP or Windows 2000 servers.

http://download.microsoft.com/download/A/E/9/AE91DEA1-66D9-417C-ADE4-92D824B871AF/uGuide.doc

While the iSCSI User Guide indicates that this scenario is not supported, DPM has code to activate dynamic disks when DPM needs to read or write to a disk in the DPM storage pool. The timing issues mentioned in the Users Guide may result in the End User Recovery shares failing to come back on line until you stop and restart the server service.

Using an iSCSI disk for the DPM storage pool in DPM 2007 when running Windows Server 2003 is supported but may result in unexpected behavior from the DPM Server, especially during a restart of the DPM Server.

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For the most current version of this article please see the following:

2008480: System Center Data Protection Manager storage pool Dynamic Disk goes offline after rebooting

J.C. Hornbeck | System Center Knowledge Engineer

App-V Team blog: http://blogs.technet.com/appv/
AVIcode Team blog: http://blogs.technet.com/b/avicode
ConfigMgr Support Team blog: http://blogs.technet.com/configurationmgr/
DPM Team blog: http://blogs.technet.com/dpm/
MED-V Team blog: http://blogs.technet.com/medv/
OOB Support Team blog: http://blogs.technet.com/oob/
Opalis Team blog: http://blogs.technet.com/opalis
Orchestrator Support Team blog: http://blogs.technet.com/b/orchestrator/
OpsMgr Support Team blog: http://blogs.technet.com/operationsmgr/
SCMDM Support Team blog: http://blogs.technet.com/mdm/
SCVMM Team blog: http://blogs.technet.com/scvmm
Server App-V Team blog: http://blogs.technet.com/b/serverappv
Service Manager Team blog: http://blogs.technet.com/b/servicemanager
System Center Essentials Team blog: http://blogs.technet.com/b/systemcenteressentials
WSUS Support Team blog: http://blogs.technet.com/sus/

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  • Sollution is set depend on service on iSCSI iniciator service first, because it dont have dependencies. This cause Storage related problems in DPM.

    I setting dependencies to network related service then iscsi iniciator starts and everything is OK.

  • I ran into this site because I have the disk problem.  This fix didn't do it.  I'm running DPM 2007, on Windows 2003R2 64 bit.  I have an EMC storage.  I can see the basic disk on another volume but the dynamic disks assigned to DPM is still shown as inactive in diskmanager.  I tried changing the DPM to automatic but no avail.  

    I'm getting these in the system event log:

    The disk group has been disabled.  (C100001C).

    Virtual Disk Service - Unexpected provider failure.  Restarting the service may fix the problem: error code 80042261@020000034.  

    Anything other suggestion?  Thank you.