59845: Acronis Backup 12.5: backup to a managed location fails with "DnsError"

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Applies to:

Symptoms

  1. You are backing up to a location managed by Acronis Storage Node.
  2. Backup fails with:
    Error code: 8
    Module: 154
    LineInfo: 0x09A79F20828BCB1D
    Fields: {"IsReturnCode":"1","$module":"disk_bundle_vsa64_7036"}
    Message: Failed to connect to the storage node.
    ------------------------
    Error code: 8
    Module: 154
    LineInfo: 0xF9CB46CC20081F0E
    Fields: {"$module":"disk_bundle_vsa64_7036"}
    Message: Failed to connect to the storage node.
    ------------------------
    Error code: 2
    Module: 3
    LineInfo: 0x05191E213A5979D6
    Fields: {"$module":"asyncipc_vsa64_7036"}
    Message: DnsError

Cause

The hostname of the machine where Acronis Storage Node is installed, cannot be resolved.

Solution

Check your network and make sure that Acronis Storage Node is accessible from the agent machine by hostname.

As workaround, add the IP address of the storage node to the hosts file on the Agent machine:

  1. On the machine where Acronis Agent is installed, open Windows Explorer and navigate to C:\Windows\System32\Drivers\etc\
  2. Find the hosts file, right-click it and open in Notepad.
  3. Add a line mapping the fully qualified domain name and the IP address of the storage node:
    XXX.XXX.XXX.XXX hostname
    where XXX.XXX.XXX.XXX is the IP address of the machine where Acronis Storage Node is installed and hostname is this machine's fully qualified domain name (click Start -> right-click Computer -> select Properties -> note Full computer name).
  4. Save changes.

Retry backup. It should run successfully now.

Please note that you need to edit this file once the IP address or the hostname of the machine with Acronis Storage Node changes.

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