Mode Z compression compresses files on the fly for file transfers, saving bandwidth and improving transfer times. The client must also support MODE Z to take advantage of this feature. If MODE Z is enabled, EFT will listen for MODE Z requests, then enable it for subsequent transfers from the client that requested it.
To allow a client to use Mode Z compression
Open the FTP Settings dialog box.
Select the Allow MODE Z Compression check box.
Click OK to close the FTP Settings dialog box.
Click Apply to save the changes on EFT.