Automatic optimization of transfer settings

Settings related to the file transfer speed can be automatically optimized. Optimizing the settings related to file transfer allows transfers to be performed at the optimal transfer speed.

 

To automatically optimize settings related to the file transfer speed, set '0 (Default value)' for the following fields.

  • Transfer Block Length (BLOCKLEN) in the Send Management Information

  • Transfer Block Count (BLOCKCNT) in the Send Management Information

 

If you set the automatic optimization of transfer settings, the optimal transfer unit is calculated when a transfer begins.

The optimal transfer unit is the largest value that satisfies the following conditions:

  • It is a multiple of (MSS x 2)

  • It is equal to or less than the upper limit for the transfer unit

'MSS' means the maximum segment size. The value varies depending on the network used for communication. The Send system obtains the value from the operating system when the data is sent. A sending error occurs if the system fails to obtain the value.

Note

Automatic optimization of transfer settings can be used if HULFT8 or higher is installed on the host on the sending side.