Subclient Properties (Storage Device)

Use this dialog box to establish the storage device related settings on the selected subclient.

The following tabs are displayed:

(Data) Storage Policy

Use this tab to select or view storage policy settings on the selected subclient.

    Storage Policy

    Displays the storage policy to which this subclient is currently associated. To associate a storage policy to a new subclient or to change the storage policy associated with an existing subclient, click one in the list.

    Data Paths

    Click to view or modify the  data paths associated with the primary storage policy copy of the selected storage policy.

    Incremental Storage Policy

    Displays the name of the Incremental Storage Policy associated with this subclient, if the storage policy has the Incremental Storage Policy option enabled.

    Data Paths

    Click to view or modify the  data paths associated with the incremental storage policy copy of the selected storage policy.

    Create Storage Policy

    Click to launch the Create a Storage Policy wizard. Once the storage policy has been created, it will be displayed in the list of storage policies to which the selected subclient can be associated.

    Data Transfer Option

    Use this tab to establish the options for data transfer.

       Software Compression

      Indicates whether software compression for the subclient or instance is enabled or disabled and, if enabled, whether it is performed on the client or MediaAgent computer.

       On Client

       Click to enable software compression on the client computer.

       On MediaAgent

       Click to enable software compression on the MediaAgent computer.


       Click to disable software compression.

    Note that hardware compression has priority over the software compression. Hardware compression is established in the Data Path Properties dialog box. The above software compression option will take effect when the data path is associated with a disk library, or when hardware compression is disabled in the data path associated with tape libraries.

    If the subclient is associated with a storage policy copy that is deduplicated, then the compression settings on the storage policy copy take precedence. See Copy Properties (Deduplication) - Advanced tab for compression settings on deduplicated storage policy copy.

    Resource Tuning

    Indicates the processes used by the client to transfer data based on whether bandwidth throttling is enabled or not.

    Network Agents

    Specifies the number of data pipes/processes that the client uses to transfer data over a network. Increasing this value may provide better throughput if the network and the network configuration in your environment can support it. On non-UNIX computers, the default value is 2 and a maximum of 4 can be established if necessary. On UNIX computers the default value is 1 and a maximum of 2 can be established if necessary.

    Throttle Network Bandwidth (MB/HR)

    Specifies whether the backup throughput is controlled or not. (By default this option is not selected and therefore the throughput is not controlled). When selected, use the space to specify a value for the throughput. By default, this is set to 500. The minimum value is 1 and there is no limit to the maximum value. (In this case the backup throughput will be restricted to the maximum bandwidth on the network.)

    Use this option to set the backup throughput based on the network bandwidth in your environment. Use this option to reduce the backup throughput so that the entire network bandwidth is not consumed, especially in slow links. Increasing this value will end up consuming the bandwidth with the maximum throughput limited to the network bandwidth capability.

    Note that throttling is done on a per Network Agent basis.

    Application Read Size

    This option specifies the amount of application data (such as SQL data, Windows File System data, and virtual machine data) backup jobs will read for each unit transferred to the MediaAgent.

    The default value for this options is 64KB; however, this value may be increased to reduce the amount of data read from the given application, which in turn reduces the amount of I/O operations performed against it. As a result, overall backup performance may increase. However, backup memory usage may also increase, which may inadvertently consume additional resources from the application. Thus, it is recommended that this value be set at either the default value or match the block size directed by the application.


    Use this tab to establish the options for deduplication on the subclient.

    Enable Deduplication

    Use this option to enable or disable deduplication for the subclient.

    When enabled, you can choose to generate the signature (a component of deduplication) on the client or on the MediaAgent computer.


    • The deduplication is supported on disk storage devices. Therefore, the deduplication options are applicable only if the subclient is associated with a storage policy containing disk storage.
    • For source-side deduplication, the signature generation always occur on the client.

    On Client

    Click to enable signature generation on the client computer.

    On MediaAgent

    Click to enable signature generation on the MediaAgent computer.