"End of data set was unexpectedly encountered" is reported during a verify operation.


"End of data set was unexpectedly encountered" (a00084d4 HEX or e00084d4 HEX) is reported during a verify operation.

Error Message

Final Error Code: a00084d4 HEX (0xa00084d4 HEX) or e00084d4 HEX (0xe00084d4 HEX)
Final Error Description:  "End of data set was unexpectedly encountered"
Final Error Category:  Backup Media Errors
Error Text In Job Log:  "Unexpected end of backup set encountered on %storage device%"



This error usually occurs because of a Bad Block on the storage media .

A Bad Block is a block (usually the size of a sector) that cannot reliably hold data because of a media flaw or damaged format markings.
This can be verified by running a verify job. The verify ensures that the preceding backup operation was successful. It will count the amount of file marks that the backup reported of the amount it just wrote to the tape. Running a separate verify job on a tape will ensure that the file marks are valid on the tape


 To perform a Verify operation, follow these steps:

1.  Select New Verify Job from the Jobs menu to display the Verify dialog box.
NOTE: The Volume View appears by default. To change to the Media View or to use the Advanced File Select, right-click on the volume name and click on the desired option from the shortcut menu which appears.

2.  Choose the media to verify from the Selections tab

3.  Enter a Job Name and targeted Drive Pool in the General tab

4.  If you wish to quickly select (or deselect) files for the verification, right-click the volume or media desired and select Advanced File Selection

5.  After completing your selections, click Run Now to start the Verify operation, Schedule to run the job at a later time, or Save to place the job's settings in the Job Definitions tab where it can be scheduled later.

After the verify operation has completed, you can check the results in the job's log file.

Erasing the media usually resolves the error.

To erase media in a drive:

1. From the Devices tab, do one of the following:

 a. Right-click the drive to display the shortcut menu, and then click Erase
 b. Select a drive, and then on the Tools menu, point to Device Operations, and then click Erase

2. Click Quick or Long

The following warning is displayed:

Warning: This operation will be performed on the current media in the drive or slot. If the media has been changed since the last inventory operation was performed, the cartridge label in the next dialog may not match the media in the drive or slot selected.

3. Click OK to continue

The Erase dialog box is displayed.

The media label that is displayed in the Erase dialog box was read during the last inventory operation. The media label displayed does not change until another inventory operation occurs. Therefore, if you change media in the slot or drive but did not run Inventory, the media label displayed may not match the actual media in the slot or drive.

4. Click one of the following:

Yes: Click this to erase the data on the media specified in the dialog box.

No: If you selected multiple media to erase, click this if you do not want to erase the media specified in the dialog box.

Yes to All: If you selected multiple media to erase, click this to erase data on all the selected media without further prompting.

Cancel: Click this to stop the erase operation.

Help: Click this for help on the Erase operation.

NOTE: Please see the Related Documents section of this TechNote for further Storage Device Errors.


Terms of use for this information are found in Legal Notices.



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