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Configuring tape libraries

Updated: November 1, 2013

Applies To: System Center 2012 - Data Protection Manager, System Center 2012 R2 Data Protection Manager, System Center 2012 SP1 - Data Protection Manager

DPM can backup data to tape libraries and stand-alone tape drives. The tape libraries and stand-alone tape drives must be physically attached to the server.

Set up tape libraries as follows:

  • Configure tape libraries—After you set up your tape device on the DPM server, DPM automatically recognizes tape devices that are directly attached and displays them in the library. If for some reason they don’t display, or if you later add new devices, then you can rescan so that DPM recognizes them.

  • Add firewall exceptions

  • Share tape libraries—You can share tape libraries across DPM servers.

Configure tape libraries

DPM supports a number of tape libraries. For more information, see Compatible tape libraries for System Center 2012 – DPM.

To install a tape library or stand-alone tape drive on the DPM server, follow the instructions provided with the tape device. Ensure that the medium changer and tape drives have serial numbers since these are used by DPM for identification purposes. An installed tape device will be listed in Device Manager. After you’ve checked that the tape device is installed properly

DPM will automatically identify a tape library or stand-alone tape drive that is physically attached to the DPM server The tape device information will be displayed in the DPM Administrator Console, in the Libraries workspace of the Management  view. If the tape device isn’t displayed, you can rescan as follows:  

Manually detect tape libraries

  1. In DPM Administrator Console, click Management, and then click Libraries.

  2. Click Rescan on the tool ribbon.

    The Rescan operation might take several minutes to complete. DPM will add any library jobs to the queue that began during the Rescan operation. If a library job is already in progress when the Rescan operation begins, the Rescan operation will fail.

After you rescan, ensure that the details displayed in Device Manager and in the tape library are the same. If DPM information doesn’t reflect the physical state accurately, you might need to correct the tape drive mapping. For more information see Remap a tape drive.

Add firewall exceptions

Before DPM can recognize the tape library, you must add the following firewall exceptions:

  • C:\Program Files\Microsoft System Center 2012\DPM\SQL\SSQL10_50.MSDPMV4RC\MSSQL\Binn\sqlservr.exe

  • C:\Program Files (x86)\Microsoft SQL Server\90\Shared\sqlbrowser.exe

  • C:\Program Files\Microsoft System Center 2012\DPM\DPM\bin\DPMLA.exe

ImportantImportant
If you are sharing the tape library across multiple DPM servers, add the exceptions on all of them.

Set up tape library sharing

You can share a single tape library across multiple DPM servers. The following illustration shows the topology of a shared library.

Topology for Library Sharing in DPM 2007

Note the following:

  • The tape library is typically a collection of tape drives that automatically mount and dismount tape media.

  • The tape library must be in a storage area network (SAN) environment.

  • The library server is a computer on which DPM is installed, the library-sharing command has been run, and the medium changer is enabled.

  • A library client is a computer on which DPM is installed, the library-sharing command has been run, and the medium changer is not enabled.

  • We recommend that the system configuration of the library server computer and all library client computers be as similar as possible, and that you do not configure any protection groups on the library server.

  • All DPM servers using a shared library must use a similar SQL Server setup for hosting DPM databases. For example, they should all use a local instance of the DPM database or all of them should use a remote instance. You cannot have some DPM servers using local instance and others using a remote instance.

Set up library sharing as follows:

  1. On the computer that will be the library server for the shared library, enable the medium changer by using Device Manager.

  2. On each library client computer, ensure that the medium changer is not enabled.

  3. Enable Named Pipes protocol for the SQL Server instances of the library server and library client computers. Then restart the SQL service.

  4. Run the following commands to configure the DPM servers to use a shared library:

  5. On each library client computer, open an elevated Command Prompt window, and then run the following commands:

    cd <system drive>:\Program Files\Microsoft DPM\DPM\Setup


    AddLibraryServerForDpm.exe –DpmServerWithLibrary<FQDN of library server>

    where <FQDN of library server> is the fully qualified domain name of the library server.


  6. On the library server computer, open an elevated Command Prompt window, and then run the following commands one time for each library client. For example, if your library server supports three library clients, you must run this command three times on the library server.

    cd <system drive>:\Program Files\Microsoft DPM\DPM\Setup


    AddLibraryServerForDpm.exe – ShareLibraryWithDpm<FQDN of library client>

    where <FQDN of library client> is the fully qualified domain name of the library client.


  7. On each library client computer, open an elevated Command Prompt window, and then run the following commands:

    ImportantImportant
    Do not run these commands on the library server.

    noteNote
    Before you run the following commands, on all library client computers ensure that both the SQL Server (MSDPM2012) and SQL Server Agent (MSDPM2012) services use a domain user account as the logon account, not a local account, which is the default configuration, and that the domain account that is used is a member of the local Administrator group on all of the computers that are sharing the library.

    cd <system drive>:\Program Files\Microsoft DPM\DPM\Setup

    SetSharedDpmDatabase -DatabaseName <SqlServer\Instance\DatabaseName> [-DoNotMoveData]

    where <SQLServer\Instance\Databasename> is the database name of the library server.

    TipTip
    You can find this information in the About DPM window as DPM’s SQL Server. You can copy this information from there, using your mouse.

  8. In DPM Administrator Console on the library server, perform a rescan, and then perform a rescan or refresh on each of the library client computers.

    The quickest way to see all media on all of the DPM servers is to perform a rescan on each, followed by a detailed inventory. Next, on any one of the servers, mark a number of media as free, and then perform a refresh on the other servers.

After you have configured library sharing, you can use the shared tape library as if it were attached to each DPM server.

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For additional resources, see Information and Support for System Center 2012.

Tip: Use this query to find online documentation in the TechNet Library for System Center 2012. For instructions and examples, see Search the System Center 2012 Documentation Library.
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