Data Domain: WinSCP Host Displays the Message "Host is Not Communicating for More than 15 Seconds. Still Waiting"

Summary: This article explains about WinSCP connection failures due to host waiting for a response from the server.

This article applies to This article does not apply to This article is not tied to any specific product. Not all product versions are identified in this article.
Check out other resources

Instructions

NOTE: WinSCP only works with FTP or SFTP, the SCP protocol does not work. See related Dell article 202391, Data Domain: WinSCP Does Not Work with Data Domain or DDMC.
 

Introduction: 

When connecting from WinSCP to Data Domain to collect and upload logs, Data Domain may take a long time responding due to Network or Connection issues. This is normal.

When accessing the Data Domain with WinSCP, a timeout warning appears that says: 
Host is not communicating for more than 15 seconds. Still waiting… Warning: Aborting this operation closes connection!
Here, the server response time in WinSCP is set to 15 seconds and a connection to the server may not be established in that period.  
 
Screenshot of warning message that connection is aborting
Figure 1: Screenshot of warning message that connection is aborting. 
 

Resolution:

The server response time must be changed or increased so that WinSCP can wait for a longer period of time to connect to the system.

  1. Open the log-in dialog box and enter the required details to connect as depicted below:

Open the log-in dialog box and enter the required details
Figure 2: Open the log-in dialog box and enter the required details.

NOTE:
  • Select the appropriate protocol from the File protocol drop-down menu before connecting. WinSCP only works with FTP or SFTP.
  • DD does not support FTP and SFTP to be enabled simultaneously.
  • Use DD IP address in place of Hostname as well.
  1. Click the Advanced Option on the log-in dialog box as shown below.

Click the Advanced Option on the log-in dialog box

Figure 3: Click the Advanced Option on the log-in dialog box.

  1. In the Connection screen, set the Server Response Timeout to greater than 15 seconds. In the example below, the time is set to 120 seconds. Ensure that the Optimize Connection Buffer Size box is checked.

Set the Server Response Timeout to greater than 15 seconds (120 seconds in this example)

Figure 4: Set the Server Response Timeout to greater than 15 seconds (120 seconds in this example).

  1. Click OK and go to log in.

Save the changes and go to log in
Figure 5: Save the changes and go to log in.

Affected Products

Data Domain
Article Properties
Article Number: 000218901
Article Type: How To
Last Modified: 10 Nov 2023
Version:  2
Find answers to your questions from other Dell users
Support Services
Check if your device is covered by Support Services.