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Data Protector - Restore / possible block size issue

Michael Bailey

Hi,

I’m after some advice on the following issue,

Due to migration activities of DP we need to restore data to another backup solution. During this process a multipathing driver needed to be installed onto the media agent server which appears to have caused problems with backing up and restoring.

After some testing it appears that when performing a new backup and restore it now only works with 64(kb) block size configured on the drive whereas before the driver install it was 256(kb), this means all existing restores are failing to run with the following error message:    (I’m assuming the driver install possibly changed something to lock DP to work with 64(kb) block size maximum)

[Major] From: RMA@*************  "HP:Ultrium 6-SCSI_4"  Time: 18/01/2024 10:21:31

[90:52]     Tape5:1:0:7:0C

      Cannot read from device ([87] The parameter is incorrect. )

[Major] From: RMA@*************  "HP:Ultrium 6-SCSI_4"  Time: 18/01/2024 10:21:31

[90:53]     Tape5:1:0:7:0C

      Cannot seek to requested position (Details unknown.)

[Critical] From: RMA@************* ""  Time: 18/01/2024 10:21:31

[61:17112] Medium header verification failed on drive HP:Ultrium 6-SCSI_4.

      All objects on this medium will be marked as failed.

 Data Protector version: 10.60 / Server windows 2012

Any suggestions on what could fix this issue?

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  • 0  

    If only 64k works then the installd driver must be causing this and that is a real concern. If you confirm that even trying to read with 256k from a tape which was written with that blocksize is failing then my suggestion would be to use  another media agent which does not have that driver installed. Hopefully you have another system which can be used for that purpose?

    You may also be interested in my Support Tips.

    Although I am an OpenText employee, I am speaking for myself and not for OpenText.
    If you found this post useful, give it a “Like” or click on "Verify Answer" under the "More" button.

Reply
  • 0  

    If only 64k works then the installd driver must be causing this and that is a real concern. If you confirm that even trying to read with 256k from a tape which was written with that blocksize is failing then my suggestion would be to use  another media agent which does not have that driver installed. Hopefully you have another system which can be used for that purpose?

    You may also be interested in my Support Tips.

    Although I am an OpenText employee, I am speaking for myself and not for OpenText.
    If you found this post useful, give it a “Like” or click on "Verify Answer" under the "More" button.

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The opinions expressed above are the personal opinions of the authors, not of OpenText. By using this site, you accept the Terms of Use. Certain versions of content ("Material") accessible here may contain branding from Hewlett-Packard Company (now HP Inc.), Hewlett Packard Enterprise Company, or Micro Focus. As of January 31, 2023, the Material is now offered by OpenText, a separately owned and operated company. Any reference to the HP, Hewlett Packard Enterprise/HPE, and Micro Focus marks is historical in nature and the HP, Hewlett Packard Enterprise/HPE, and Micro Focus marks are the property of their respective owners.