Exchange backup fails frequently
We are using Acronis Backup for VMware version 9 to backup our Exchange 2013 virtual machine.
The VM is running on ESXi 5.1. The vCenter Server is running 5.5. The guest OS is running Windows Server 2012.
The backup is not at all consistent. The backup will be successful for one week, and one fine day it starts failing. We cannot predict whether it will complete successfully on the next day. The backup will start running fine one day. We dont need to change anything. But, this has started to be a big problem. I am clueless now on why exactly the backups are failing. Pleas see the attached screenshot.
If you see the attachment, backup was successful on 3rd, 4th, 5th
failed on 6th
again good on 7th, 8th etc.
No changes were made on the Backup configuration or on the Backup Server, Exchange Server or the Vmware infra to get this resolved. It resolves on itself. But, as you can see, this has become highly unreliable. I am attaching the latest logs for the backup as well.
I have already tried re-installing vmware tools. It is running version 9.0.16 build 3055609. Moreover, if it is the issue with vmware tools, then it should fail always. But, it is successful sometimes. Please let me know your thoughts.