Hi there
for some days i have a problem with backing up our VEEAM VM, that used to work like a charm for more then a year now. After ~19.5GB of transferred Data, the Backup of the VEEAM VM fails with the following error (All other VMs are backed up without any problem):
Code: Select all
06.02.2019 12:26:13 :: Error: VDDK async operation error: 14009. Value: 0x00000000000036b9
Failed to upload disk.
Agent failed to process method {DataTransfer.SyncDisk}.
Exception from server: VDDK async operation error: 14009. Value: 0x00000000000036b9
Unable to retrieve next block transmission command. Number of already processed blocks: [62740].
Failed to download disk.
Some background information to the infrastructure:
VEEAM Backup Server (Windows Server 2016, VBR 9.5.4.2615) and Backup Target (QNAP NAS) are running in LAN A.
ESXi 6.7 Host (Build 11675023) and vCSA 6.7 (Build 11726888) are running in LAN B.
-> VMware and VEEAM are up-to-date.
LANs are seperated by Sophos Firewall. Any-Any FW Rule doesn't change the result.
VEEAM Backup Server is running as VM on the ESXi Host, and fails backup up its own VM. There's no seperate Backup Proxy in LAN B. VEEAM is connected to vCenter.
After hours of googling and reading, rebooting and updating, i am running out of ideas. Maybe someone here has an idea, what the cause of this could be.
I found this on that topic:
https://vinfrastructure.it/2018/10/veea ... ror-14009/ But I am not sure if that can be the answer. We didn't touch the network and don't encounter other network problems.
Thanks a lot guys!