We have started to see backup issues on mainly large vms after upgrading vcenter to 6.7 (not U1). We are seeing the same errors on 2 virtual environments where both have vCenter version 6.7. Esxi hosts are not yet updated.
Case: 03293359
Error: VDDK async operation error: 2....
Cause: This happens on vms with atleast 5-6 harddisks. In vcenter 6.7, VMware have set a hard read buffer size limit (32 MB) that is not possible to change. When backup runs parallel on a vm with many harddisks this read buffer size is overcommited and backup fails. More info https://support.unitrends.com/Unitrends ... /000005944
Case: 03295615
Error: NTFS file: failed to read 16777216 bytes at offset 16779072 Failed to upload disk.
Cause: Started to happen after vCenter was upgraded to 6.7. Still investigating root cause with Veeam support.
VBR 9.5 update 3a
VMware strikes again!
![Sad :(](https://forums.veeam.com/images/smilies/icon_sad.gif)
\Masonit