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Cataloging the Media Using Media Explorer

Media Explorer tool uses the cataloging process to obtain information about the Disaster Recovery (DR) backup files stored on tape media or disk volumes.

Note: Data from deleted subclients or storage policies cannot be recovered. Catalog operations are not supported for this type of data.

Before You Begin

  • Physically locate the proper media needed to recover the data.

    If the data resides in a cloud library, convert the data to a regular disk library format and then provide the location of the converted data. For more information, see Recovering the Data on a Cloud Library Using Media Explorer.

  • Download the Media Explorer tool. For more information on downloading Media Explorer, see Downloading Media Explorer.
  • Make sure no other applications or services are attempting to access the library.
  • Have your encryption pass-phrases available if applicable.
  • Have your Media Prediction Report and CommCell Configuration Report at hand to help you identify and locate media archive files.

    For more information on these reports, see Media Prediction Report - Overview and CommCell Configuration Report - Overview.

    Note: Regularly running the above reports prior to the need for a disaster recovery will help you identify and locate the media archive files.

    If you do not have any reports saved, you will have to manually determine the required media. This involves finding the correct (latest) archive file(s) for backups you want to restore.

Procedure

  1. Run MediaExplorer.exe.

    The Current database file path is created and defaults to the DrCatalog as indicated in the Media Explorer window.

    Note: It is possible to perform a recovery using only the default archive database. However, when recovering large numbers of archive files or many types of archive files, locating the files becomes cumbersome. Hence, where needed, you can create additional database file paths using the New button.

    The New and Open buttons can be used to start cataloging to a new catalog or to open an existing catalog database. This is useful in situations where you would like to use Media Explorer over multiple sessions and not overwrite previous catalog operations.

  2. Selecting either the Tape or Disk Media option to detect the media.

    For a Locally-Attached Tape Drive or Library:

    1. Manually load the media into the drive.
    2. Select the Tape option.
    3. Click Drive Detect to populate the tape mount paths in this field (i.e., tape0, tape1, tape2, etc., depending on your SCSI settings). The drive shown matches the SCSI ID setting for the device.
    4. Select the drive on which it is loaded
    5. Select the appropriate Media Type from the list.

      Note: A full DLT 7000 tape will take approximately two hours to catalog. Be certain you have enough disk space on your local computer to accommodate the files.

    Repeat this step to catalog multiple tapes, if multiple tapes are needed for performing the restore.

    For a Disk Volume:

    1. Select the Disk option
    2. Browse to or type the drive path for the disk volume path. (For example, F:\, if F is the drive letter that holds the disk volume.)
    3. Optional: To add multiple mount paths, click Add Mount Paths.
    4. Directly beneath CV_magnetic folder, select the volume folder (V_nnn) in which the archive files reside, and click OK to continue.

      You can specify the entire mount path to enumerate multiple volumes and later catalog volumes one by one for the catalog operation.

      • The CV_MAGNETIC folder structure represents the top level of the disk mount path.
      • The V_nnn folder represents a volume that is equivalent to a storage policy copy.
      • The AF_nnn folders represent the individual archive files within a volume. Each backup creates one or more archive files, depending on the iDataAgent.
  3. Click Catalog Jobs.

    The catalog operation reads the media for archive file information and displays this information in the window.

    Note:

    • You may be asked to provide a media password. Type the password and click OK. If you do not know the media password, contact Commvault Support for assistance.
    • If data was encrypted using a pass-phrase, you will be prompted to enter the pass-phrase used at the time of the data protection operation.

    The status bar will reflect the cataloging process as it occurs. A message appears when cataloging process is completed.

Result

  • Check for details in the MediaExplorer.log located in the local Media Explorer folder.

    Note: An archive file will sometimes span across several tapes during the course of normal backups. In this case, when a catalog operation is run on the first media, the information on the second media may not appear to have been cataloged. However, when you perform a recovery from the first tape, Media Explorer asks you to load the second tape manually to continue the recovery.

  • If after cataloging a media you see an archive file for which the Catalog column does not display Found All and the Catalog State column displays Partial, it indicates that the archive file has spanned to another media. In this case, you need to locate that other media and catalog it as well. Once the last media that contains the spanned archive has been reached, you will be prompted to reinsert all the media (starting with the first) necessary to finish the cataloging process for the spanned job.

    Once all media has been successfully cataloged, the Catalog column should display Found All and the Catalog State column should display Complete, and the recovery may take place like any other recovery. During the recovery of this archive file, you will be prompted to insert the media as required to complete the recovery.

    Note: Media Explorer stores cataloged media information in its database on your local hard drive for future reference. Once your files have been cataloged, you can go back and obtain this information without running the catalog operation again. To have the information available on another computer, however, you would need to run a catalog on that computer.

  • You can click View Chunks from the File menu to display the Chunk Details window. This window provides Media Explorer database details that may be helpful to locate them.

Last modified: 12/18/2018 10:04:48 PM