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Configuring Network Throttling

The network traffic for clients and MediaAgents can be throttled based on the network bandwidth in your environment. This is useful if you want to limit the network bandwidth usage.

By default, network throttling is disabled. You can enable the throttling options for multiple clients by configuring this option on the client computer group. Once configured, the throttling options are applied to all data transfer and control message operations, for example, Data Protection operations including Laptop Backups, Dash copy, and Data Recovery Operations.

  1. From the CommCell Browser, go to Client Computer Groups.
  2. Right-click the client_computer_group and then click Properties.

    The Client Group dialog box appears.

  3. Click Network > Network Throttle tab.
  4. Select the Enable Network Throttling check box.
  5. Under the Client Computer Groups node, select the client computer groups to setup throttling.
  6. By default, the All clients share allocated bandwidth check box is selected to share the throttling settings among all selected clients cumulatively.

    If this check box is cleared, each client will throttle at the configured rate instead of a combined and shared rate.

  7. In the Throttling Schedule area, click Add to setup throttling rules.

    Example

    • Days of Week - select a day or multiple days for the schedule to run.
    • Time Interval - select Whole day or a specific time interval for the schedule to run.

    You can select one of the following to specify a throttling rate:

    • Use Absolute Throttling

      Click the Throttle Send and Throttle Receive check boxes and enter the values for each.

    • Throttle Relative to Bandwidth

      This feature lets you enter a threshold, and throttling percentage. While sending or receiving, the client monitors the rate at which it can send or receive data. As long as the threshold you enter is below the actual rate, the client sends or receives as fast as the network will allow. If the actual transmission rate falls below the threshold you set, however, the client backs off, sending or receiving data at only the throttling percentage you have set. For example, if your threshold is 500Kb/sec, and your percentage is 40%, transmission is throttled back to 200Kb/sec.

      The client imposes this constraint for a fixed period, then attempts to operate at full speed again. If it finds that conditions have improved (that is, that it can now send or receive data at a rate greater than the threshold you set), it stops throttling. If it still cannot send send or receive above the threshold rate, it continues to operate at the throttled percentage for another period, and so on, until the job completes.

      • Select If send bandwidth is less than (Kbps) to enter a sending rate threshold, and a percentage rate to throttle the sending rate to if that threshold is crossed.
      • Select If receive bandwidth is less than (Kbps) to enter a receiving rate threshold, and a percentage rate to throttle the receiving rate to if that threshold is crossed.
  8. Click OK to save the throttling rule.

    The new throttling rule appears in the Throttling Schedule area.

  9. Click OK.

Last modified: 10/11/2018 5:00:34 PM