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Product Version: 6.0
Last Modified: 04 Jan 2016

Problem

VMware VM processing fails. The following error message appears:

Internal error has occurred while backing up/replicating/recovering the VM.

Possible Cause

Closed Ports

NAKIVO Backup & Replication requires the following TCP ports to be open for successful VM processing:

TCP Port  #
(Default)
WhereDescription
4443DirectorUsed to access the Director web UI. Must be open on the Director machine.
9446TransporterUsed by Director and Transporters to communicate with the Transporter. Must be open on the Transporter machine.
9448-10000TransporterUsed by Transporters for cross-Transporter data transfer. Must be open on the Transporter machine.
443vCenter Server
ESXi hosts

Used by Director and Transporters to access VMware infrastructure. Must be open on vCenter Servers and ESXi hosts.

902ESXi hosts

Used by Transporters to access VMware infrastructure. Must be open on ESXi hosts.

Make sure that: 

  • Required ports are not used by other applications.
  • Required ports are not blocked.
  • The ports are accessible from the appropriate endpoints.

Server Outage

  • Source or target ESXi host might be disconnected or powered off.
  • Source or target Transporter might be disconnected or powered off.

Make sure all ESXi hosts and all Transporters are available.

File System Issues

With a default block size of 1 MB, VMFS3 does not support files larger than 256 GB. VM disks larger than 256 GB will produce an error.

If this problem occurs on the source datastore, migrate your VM to a datastore which supports large files (e.g. VMFS5).
If this problem occurs on the target datastore, use another datastore as a target.

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