MSA2000FC G2 & Failover Cluster 2008

[GiulioB]

Some months ago I installed a two nodes (active/passive) Failover Cluster Hyper-V with Windows Server 2008 Datacenter x64 SP2.

The servers are DL 380 G5 and storage system is an MSA2324FC G2 with 24 disk and 2 configured Vdisk.

Now I have a problem because the passive node (without anyone VM) uses at least 10% of cpu for the process ssproxy*32.
Note: 10% of cpu for a dual processor quad core system is about one core :-(

The ssproxy's description is HP StorageWorks MSA2000 Family CAPI Proxy.
I just controlled for some update and I installed the new version 2.5.0.22 (b) (2 Jun 2009) but the problem isn't correct.

Anyone has the same problem?
Any ideas?
Thanks a lot for help

Giulio