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Dell NetWorker 19.9 Administration Guide

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Configuring parallel save streams for virtual clients

If you are backing up virtual clients, you can base the client parallelism setting on the underlying physical host. In this way, the total number of save streams for all virtual clients that reside on a physical host are limited to the value specified for the physical host.

For example, consider an environment with ten virtual machines running on the same physical host. Each virtual machine is a NetWorker client, and each client has a client parallelism setting of 4. This setting can result in a total of 40 save streams occurring on the same physical host, which would significantly slow down that system. To avoid this situation, you can specify that the client parallelism values are to be based on the underlying physical host. In this example, that would result in no more than four save streams occurring for the backup of the ten virtual clients.

  1. In the Administration window, select View > Diagnostic Mode to enable diagnostic mode view.
    A check mark next to Diagnostic Mode in the View menu indicates that diagnostic mode view is enabled.
  2. Click Protection.
  3. In the expanded left pane, select Clients.
  4. Right-click the Client resource for the virtual client and select Modify Client Properties.
    The Client Properties dialog box appears, starting with the General tab.
  5. Select the Virtual client checkbox.
  6. Type the name of the underlying physical host in the Physical host box.
  7. Select the Globals (1 of 2) tab.
  8. From the Parallelism list, specify the maximum number of save streams.
  9. Select the Physical client parallelism checkbox.
  10. Select the Parallel save streams per save set checkbox.
  11. Click OK.
  12. Repeat these steps for all virtual NetWorker clients that share the same physical host.
    Ensure that the value in the Physical host attribute is the same for all virtual NetWorker Client resources that share the same physical host.

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