SAP Install on Windows and SQLserver with NEC Cluster

Dear all,

         We plan to install ERP 6.0 EHP5 on windows 2012 and SQLserver 2012. We choose ExpressCluster X3.0 of NEC as Cluster software, not

use the windows Failover Cluster software.

         Now the two servers as nodes, shared disk,virtual IP and virtual hostname are all configured in NEC and can be changed each other.Then we start to install cluster SQLserver and HA ERP,they all failed, and said no cluster service.

        At last, we know the ERP ha only used for Windows Failover Cluster, not for NEC, but NEC has the SAP HA-certifacation in windows.

        So how do we install our system in HA?