Alert "Unable to validate NDMP server" or "Unable to connect to the NDMP Server" appears when client-side deduplication is enabled.

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Article ID: 100026185

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Updated On:

Description

Error Message

Alert: Storage Error:

Server Information

ServerName - Unable to connect to the NDMP server, or to the remote computer that is configured as a remote media agent, or to the remote computer that is configured for deduplication.

UMI: V-275-1017

Resolution

1. Check if the server name reported in the alert is present in Backup and Restore tab and is configured to use client side deduplication.

If client side deduplication is not needed, disable it and restart the Backup Exec services on the Backup Exec server.

Note: Client side deduplication is also called direct access and it is configured in Direct access sharing tab. 

Figure 1.

2. Test connection from the Backup Exec server to the remote server.

On the Backup Exec server, run the following command from the PowerShell prompt.

PS C:\> test-netconnection RemoteServerName -port 10000

Where RemoteServerName is the remote server name which is shown in the Backup and Restore tab. If the listed server name is FQDN, replace the RemoteServerName with the exact same name as FQDN.

3. Test connection from the remote server to the Backup Exec server .

On the remote server, run the following command from the PowerShell prompt.

PS C:\> test-netconnection BEServerName -port 10000

Where BEServerName is the Backup Exec server name. Use the computer name. Do not use FQDN or "." (dot) for the connection test to the Backup Exec server.

Issue/Introduction

This issue is specific to remote servers which are enabled to be backed up using the client side deduplication feature. If the Backup Exec server is unable to connect or validate the remote server connection, then the alert below is displayed.