Linux Backup plan fails with "Failed to mount the SMB share"

Hi @ all

I have problems with the newest build of Acronis 11 Server for Linux. I have a backup plan, that creates a backup every day on a CentOS 6 VM to my Synology NAS.
When i restart the VM, the backup works fine for around one week. After the backup fails with the errors:

Fehlercode: 61
Module: 309
LineInfo: 4a8728dc8a1c94f4
Felder: $module : service_process_lxa64
Nachricht: Befehl 'Backup' ist fehlgeschlagen.
--------------------
Fehlercode: 80
Module: 89
LineInfo: 9a79f20828bc7f3
Felder: IsReturnCode : 1, $module : disk_bundle_lxa64_pic
Nachricht: Failed to mount the SMB share 'Backup'.
--------------------
Fehlercode: 80
Module: 89
LineInfo: 9a79f20828bc7f3
Felder: IsReturnCode : 1, $module : disk_bundle_lxa64_pic
Nachricht: Failed to mount the SMB share 'Backup'.
--------------------
Fehlercode: 80
Module: 89
LineInfo: 9a79f20828bc7f3
Felder: IsReturnCode : 1, $module : disk_bundle_lxa64_pic
Nachricht: Failed to mount the SMB share 'Backup'.
--------------------
Fehlercode: 80
Module: 89
LineInfo: 9d05ddc01e814dab
Felder: IsReturnCode : 1, $module : mms_lxa64
Nachricht: Failed to mount the SMB share 'Backup'.
--------------------
Fehlercode: 11
Module: 4
LineInfo: 9d05ddc01e814da8
Felder: $module : smb_supp_lxa64_pic

When i restart the VM again, the backup plan works well again for around one week. Then the same issue happens. The Windows Backup works allways fine, so i think it is a Linux Agent issue.

Any suggestions?

Best regards

Daniel