FIM Portal in High Availability Installation

Hi Team,

I am working on something and trying to perform HA in FIM. Below is my current system:

1) server A and B for SQL DB.

2) Server C and D for FIM Portal.

3) Server E for FIM Service.

4) Server F For FIMSync Service.

Steps I have performed:

Installed SQL on server A & B for Every Required DB and done Clustering.

1) Installed FIMSync service on server F.

2) Installed FIM Service on Server E.

3) Installed SharePoint 2010 Foundation server Farm Installation on Server C.

4) Installed FIM Portal on Server C.

5) Installed SharePoint 2010 Foundation with same Farm on Server D and FIM Portal as well.

But when I try to access FIM Portal with Server D's Host name then it is showing error "Service Unavailable".

Please help !!!!!

Thanks~ Giriraj Singh Bhamu