Managing transfers

The Desktop Client GUI enables the option to start, stop, and reorder transfers, and adjust the transfer rates and policies, and configure transfer preferences.

The transfers panel: Start, stop, and reorder transfers

Once the transfer starts, a progress bar appears in the Transfers panel. You can manage transfer behavior with the following actions:

  • Click Start transfer to start the selected transfer.
  • Click Stop transfer to stop the selected transfer.
  • Click Delete transfer to delete the selected transfer.
  • If you have multiple ongoing transfers, use the Queue-forward and Queue-backward to change the selected transfer's priority. The # field indicates the transfer's order in the queue.

The details view: Adjust transfer rates and policies of active transfers

The Details button provides additional oversight and control (if you have permission) over transfers. Select a transfer session from the Transfers panel and click Details to view details and adjust settings.

Show a session's detail.

The Details display shows the following information:

Transfer detail.
Item Name Description
A Details (tab) Transfer details, including status (rate and ETA) and statistics (session size, files transferred versus total files to be transferred, average speed, time elapsed, RTT delay and average loss in percent).
B Files (tab) All files being transferred in this session, along with each files' size and transfer progress.
C Transfer controls Set the FASP® transfer policy and transfer rate, if allowed.
  • high - Adjust the transfer rate to fully use the available bandwidth up to the maximum rate. When congestion occurs, the transfer rate is twice as fast as a fair-policy transfer. The high policy requires maximum (target) and minimum transfer rates.
  • fair - Adjust the transfer rate to fully use the available bandwidth up to the maximum rate. When congestion occurs, bandwidth is shared fairly by transferring at an even rate. The fair policy requires maximum (target) and minimum transfer rates.
  • low - Adjust the transfer rate to use the available bandwidth up to the maximum rate. Similar to fair mode, but less aggressive when the bandwidth is shared with other network traffic. When congestion occurs, the transfer rate is reduced to the minimum rate until other traffic decreases.
  • fixed - Attempt to transfer at the specified target rate, regardless of network or storage capacity. This can decrease transfer performance and cause problems on the target storage. Use the fixed policy only for specific contexts, such as bandwidth testing, otherwise, avoid the use of this policy. The fixed policy requires a maximum target rate.
  • aggressiveness - The aggressiveness of transfers that are authorized by this access key in claiming available bandwidth. Value can be 0.00-1.00. For example, these values correspond to the policy option where a policy of high approximates to aggressiveness of 0.75, fair to 0.50 and low to 0.25. Aggressiveness can be used if you need to fine-tune the transfer policy.
Important: If --policy is not set, ascp uses the server-side policy setting (fair by default).
D Transfer Monitor The transfer graph. Use the sliders on the vertical axis to adjust the transfer rate up or down (if allowed).

Configuring transfer preferences

If you have administrator privileges, you can set the target transfer rate for all users from the Global Preferences dialog. As an individual user, you can override the global settings from My Preferences.

To update these settings, go to Tools > Global Preferences or Tools > Preferences. You can also open My Preferences from the Preferences button in the upper-right corner of the application's main window; from there you can also reach the Global Preferences dialog by clicking Global Preferences.

The preferences' Transfer window.

The following options are available under the Transfers tab:

Item Description
Global Bandwidth Limits The aggregated bandwidth cap for all FASP transfers on this computer.
Default Target Rate The initial download and upload rates for all transfers.
Maximum Active Transfers The maximum number of concurrent upload transfers and download transfers.

For information about Email settings, see Configuring transfer notifications.