I am very relieved to finally find a forum online detailing others suffering the woes of Veeam 7, versus 6.5. You have my sincere empathy.
Our setup is simple - 2 x Win 2012 Datacenter Hyper-V Hosts, with 9 production VMs (all running Win 2012 Datacenter too) running on Host1, and replicated (using the Hyper-V inbuilt replica system) to Host2. We aren't using any clustering, and all storage is direct attached on each identical server, using LSI SAS-2 RAID cards with RAID 10 on 6 drives per host.
Veeam 7 is so bad, it has proven dangerous to our setup. I started a backup running in the early hours last night (one of many that have gone wrong), and hoped that with some new setting tweaks (such as bandwidth throttling) it might play ball. I watched it backup for several hours, and it was fine.... This morning, I get a call from my work, and everything is completely going to pieces. As another user put it above, the Hosts are fine, but the VMs themselves timeout. Trying to shut down the Veeam backup service is fruitless, as is trying to stop the backup in the Veeam B & R console. So I have to restart the Host, which with all this going on then takes almost an hour to return to useability. In the interim, my colleagues are pretty upset with the whole ordeal, as frankly am I.
Veeam 7 wasn't available at our time of purchase, and ideally I would have waited till it was released to properly test it. Veeam's selling technique was just a bit questionable (the deal was effectively something like a 40% discount to buy rights to a future version before the end of June 2013, getting a 'free' upgrade to the enterprise plus 7 edition when it came out but without being able to test it - and having to pay more for support later down the track too.) 6.5 was available at the time, and I throughly tested it and found it to be an excellent product. It lacked tape and WAN acceleration support (both offered in 7 enterprise plus and strong needs for us), and on the strength of the quality of 6.5, we went for it. I'm now starting to regret that decision.
Could a Veeam forum admin chime in and tell me where I need to go to file a support request? So far I've emailed a contact I had at Veeam, but not heard anything back....
Good luck to all - will share the outcome if I have anything to contribute on the issues