I just read through this weeks Veeam Community Forums Digest.
If you are using Hyper-V 2012 and CSV, the following is an important hotfix to install > 2813630. Apparently, the lack of it have caused some damage during B&R POC with one large prospect of ours last week, and this was not pretty. Generally speaking, we have been seeing plenty of issues inflicted by ODX logic addition in our support, and our engineers commonly recommend to disable this functionality when storage behind CSV does not support ODX. So, consider disabling ODX preemptively to be on a safe side. The added benefit here is that this also removes overhead by eliminating unnecessary ODX support queries against the storage device during certain I/O operations.
I use Hyper-V 2012 and CSV, and a HP Lefthand P4300 ISCSI SAN and Veeam 126.96.36.199 and that works, so i'm in "no touch" mode until the issues are resolved in V7. I've seen people posting issues on W2012 and CSV's with paused VM's, insufficient disk space etc. But do you recommend that i disable ODX anyway in my current configuration?