Well great news that this is on the agenda. It's a critical bit of missing functionality and a shortcoming I didn't see mentioned anywhere in the sales material.

Olias - I have a setup much as you describe in your other thread, a cluster of 4 hyper-v machines with 2 DSS storage boxes relpicating all our VMs to another building for disaster recovery purposes. I set this up about 18 months ago but didn't at that time set up failover as I ran out of time before it had to go into production. I figured at least I had a replica and could do a manual failover should it be needed.

I managed to get some down time on the system before xmas and set up failover. This works in the sense that if the primary DSS box goes down, the secondary takes over, but the side effect seemed to be that some / most of the Hyper-V hosts would blue-screen and the linux hosts would have their file systems switch to read only. All the machines came back ok after a reboot, but I wouldn't like to push my luck with this. I suppose it's equivalent to ripping HDs out of a running server, probably not recommended.

Open-E support helped me with the issue and we went through updating drivers, RAID firmware etc before they eventually told me that it was a known issue - failover didn't work with Hyper-V.

This was kind of disappointing having invested significant time and money in the DSS solution, which I'm otherwise very happy with. The problem is without working failover to do any maintenance / updates etc on the primary DSS box I need to shut down all the virtual hosts, which is most of our infrastructure. Hopefully they will come good with an update soon!