DPM: Cannot verify tape data (3309)

Microsoft.Windows.SystemCenterDPM2010.MediaVerificationFailed (UnitMonitor)

Data on the tapes cannot be verified.

Knowledge Base article:

Summary

This alert is generated when the tape verification did not start due to tape or library issues. This can cause data loss during recovery.

Causes

See the Alert Details pane for more information on the cause of this alert.

Review the alert details in DPM Administrator Console, determine why the tape verification failed, and take the appropriate action.

Possible causes include the following:

The tape has read/write errors.
There is a network failure at the DPM or protected server side.
Permissions or passwords have changed and DPM cannot access the folder to back up or recover data.
Two tapes have the same barcode but different On-Media Identifier (OMID).
Two tapes have the same OMID but different barcodes.
Two tapes have the same OMID, one with a barcode and the other without a barcode.
A tape that had been in use by one DPM installation was moved and written by a different DPM installation and then put back in the original DPM installation.
Data is corrupt on the tape.

Resolutions

The error conditions and recommended actions associated with each “Cannot verify tape data” alert are provided in the alert details.

Follow the recommended action in the alert and retry the job.

If the tape has read/write errors and you have run a recovery job, look for duplicate tape or an older point in time copy of the same data.
Fix the network failure and rerun the job.
Make sure that permissions and passwords are correct so that DPM can access the tape.
Two tapes with the same barcode but different OMID: Ask the administrator to ensure that each tape has a unique barcode.
Two tape with the same OMID but different barcodes: Most likely, the administrator switched the barcode on the tape and one tape will be offline. In this case, the two tapes can be labeled the same.
Two tapes have the same OMID, one with a barcode and the other without any barcode: The administrator should provide a unique barcode for both tapes.
The tape has been overwritten: The tape cannot be used.

When resolved: When the job is re-run, DPM is able to access the tape; two tapes have unique barcodes.

External

For information about how to manage tape libraries in DPM and verify an unknown tape, see the “Managing Tape Libraries” chapter in the DPM 2010 Operations Guide (http://go.microsoft.com/fwlink/?LinkId=66738).

Element properties:

Target

Microsoft.Windows.SystemCenterDPM2010.Library

Parent Monitor

System.Health.AvailabilityState

Category

EventCollection

Enabled

True

Alert Generate

True

Alert Severity

Warning

Alert Priority

Normal

Alert Auto Resolve

True

Monitor Type

Microsoft.Windows.2SingleEventLog2StateMonitorType

Remotable

True

Accessibility

Public

Alert Message

DPM: Cannot verify tape data (3309)

{0}

RunAs

Default

Source Code:

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