Hi,
thanks for your answer.
I try to get some further input.
I use Quest Vranger 7.5 as Backup Program. The Backup also includes application aware processing via vzshadow.exe
But Vmware should also be Application Aware since the parameter "disk.enableUUID=true" is possible.
And I deal since ESXi 4.1 with this option, as it was not working very well in the beginning with Server 2008 VM's and Vmware DataRecovery.
The other hint with "delete shadow copies": For this Vm shadow copies are disabled.
As i notet before, the snapshot success rate is rather inconsistent with the 10.x branch. But i have to qualify it to this "specific" VM. 2 other 2012R2 VM's ( One simple Domain Controller and one File Server with deduplication enabled) work flawless with every 10.x VMware Tools-Version.
Just to clarify: After install Version 10.1.10 yesterday 3 test snapshot worked. Then the first Backup Job also was successful. But the during the second job ( Backup to another repository), i got again this error message. Vsphere client shows that vranger tries 3 times to take the snapshot.
When i then restart the VM, Backups working for 3-5 days.
Tis our Mail Server VM and therefore an essential VM, I am not able to do here extensive Tests. Especially because a VMTools Downgrade is not that much Fun.
(Don't uninstall VMWARE Tools with paravirtual SCSI Disk and reboot without reinstall the old tools. My Exchange just missed the Data Disk :-( )
Last Time i tested Version 10.0.17 for about 3 Weeks. And not later that 6-7 Day's I got this error message during VM Backup.
Right after going back to 9.10.5 the Problem disappears . (for the last 4 Weeks). Testing Version 10.1.10... Problem/Error is back again.