We are currently running Open-E DSS (v5) with iSCSI failover. We are planning on buying new servers and we would like to upgrade to Open-E DSS v6.

I have two questions, which I couldn't find online:

1. Are the new 3ware 9750 cards working on DSS v6 (9750-8i and 9750-16i4E)
2. How can we migrate with as minimal downtime as possible? We have the following procedure in mind, but I'm not sure if that is working, because it would be necessary to combine both Open-E versions for a short while.

Our migration procedure:
* Shutdown the current secondary SAN
* Add one of the new SANs with v6 as secondary node to the failover cluster (primary is v5!), so DRBD will replicate all data
* After replication, make the new SAN with v6 the primary SAN
* Shutdown the other DSS v5 SAN
* Add the other DSS v6 SAN as secondary to the primary v6 SAN, so DRBD will replicate all data
* After replication, all is working fine in a failover configuration

Thank you for your help!