I really liked a 2 node HA SAN setup with iSCSI and virtual IPs. Windows had SMB multichannel as a backhaul for HA storage quorum. SMB has fantastic performance with Windows using link aggregation, and load balancing so you can easily use a mix of 10g fiber and 1g. Linux cannot do this at all. LCAP blows in comparison. Iscsi multipath is better, but still. And I'm not sure if anyone has priced out 10gb switches lately...