Veeam Support Knowledge Base
Veeam Backup Proxy server becomes unresponsive

Veeam Backup Proxy server becomes unresponsive

KB ID:	1514
Product:	Veeam Backup & Replication
Version:	6.x
Published:	2012-02-06
Last Modified:	2020-08-13

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Challenge

The Veeam Backup server or the Backup Proxy server becomes completely unresponsive when disks of a backed up virtual machine are being hot-added to the server.

Cause

If CTK parameters are enabled on the Veeam Backup server or on the Backup Proxy server, the Virtual Appliance mode cannot be used to back up machines with large disks.

Solution

Power off the Veeam Backup server or the backup proxy server and set all CTK parameters to "false" as per the following KB:

http://www.veeam.com/KB1113

If you back up or replicate Veeam components, edit properties of a corresponding job: open the Advanced Settings dialog box and disable the Use changed block tracking data (recommended) option on the vSphere tab, so that the CTK parameters are not set to "true" during the next job run.

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