Memory Performance: HOST Mem and Guest Mem

Hello,

In a enviroment with 8 nodes VMware ESXi 4.1 cluster, delivering desktosp of VMware View 4.6, could i do some "tunning tasks" to reduce de Host memory usage?

All the "delivered desktosps" are running Windows7 SP1 Pro, with 1vCPU and 2GB RAM. The Guest memory is always low, but the Host memory is always consuming 2GB... (see the picture) Is there any way to minimize host memory impact?

Thanks.