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In Microsoft System Center Data Protection Manager 2006 with Service Pack 1 (SP1), you experience the following symptoms when shadow copies require more space than you have allocated:
You receive a message that resembles the following:
Affected area: DriveLetter Occurred since: Date Time Date inactivated: Date Time Description: Since Date Time, synchronization jobs for DriveLetter:\ on ComputerName have failed. The total number of failed jobs = N. The last job failed for the following reason: (ID 3115) (ID 2043 Details: Internal error code: 0x809909E3) Recommended Action: Refer to the KB922510 for resolution (http://support.microsoft.com/kb/922510/en-us).
The latest shadow copy is retained. However, most shadow copies are lost.
You receive a message that asks you to increase the disk allocation for shadow copies.
The affected protection group member is not in a valid state.
Synchronization operations and consistency checks fail.
To resolve this problem, increase the disk allocation for shadow copies. Then, create a new shadow copy of the affected protection group member to continue protection. To do this, follow these steps.
Note This problem may also occur when you restart a computer that is running the original release version of System Center Data Protection Manager 2006. In this scenario, create a new shadow copy of the affected protection group member. However, do not increase the disk allocation.
Start System Center Data Protection Manager 2006.
In the Display pane, click the protection group that contains the affected protection group member.
In the Actions pane, click Modify disk allocation.
Note To determine how much free space is available in the storage pool, see the value in the Remaining space in storage pool after allocations box.
In the Modify disk allocation dialog box, select the affected protection group member, and then click Change.
Modify disk allocations for the protection group member as follows:
Increase the replica area to 150% of the size of the protected data.
Increase the shadow copy area to 20% of the modified replica area.
For example, if the protected data is 100 GB, increase the replica area to 150 GB and increase the shadow copy area to 30 GB.
Type the value that you want to add in the Additional Space to Allocate box for the replica and shadow copy area.
Note The new size of the replica and shadow copy areas should be the total of the Current Allocation size and the Additional Space to Allocate size.
Review the disk allocation changes, and then click OK.
Click Update Allocations to apply the changes.
Note the replica directory path for the affected protection group member. The path appears in the Details pane.
Create a new shadow copy of the replica volume on the System Center Data Protection Manager server by typing the following command at a command prompt:
vssadmin create shadow /For="ReplicaMountPoint"
Note ReplicaMountPoint is the replica path truncated to the GUID. For example, consider the following replica directory path and replica mount point:
Replica directory path C:\Program Files\Microsoft Data Protection Manager\DPM\Volumes\Replica\FileServerName\E-1ed88a75-1b71-11da-b87c-806e6f6e6963\ReplicaDir\Test
Replica mount point C:\Program Files\Microsoft Data Protection Manager\DPM\Volumes\Replica\FileServerName\E-1ed88a75-1b71-11da-b87c-806e6f6e6963