Designing and implementing a virtual infrastructure is not an easy process, and certainly not something that can be easily discussed on a forum.
Making the correct decisions depends on numerous factors, such as budgets, application requirements, constraints etc. and a simple diagram is far from sufficient.
You will need to discuss the project in detail with your organization or client, and in particular with all the teams that will be involved (storage, backup, network etc).
Here is a set of useful resources for implementing VMware solutions:
VMware vSphere 5.5 Documentation Center: http://pubs.vmware.com/vsphere-55/index.jsp
VMware Knowledge Base: http://kb.vmware.com
VMware Compatibility Guide: http://www.vmware.com/resources/techresources/cat/119
VMware Product Interoperability Matrix: http://goo.gl/UmG0WR
VMware vSphere 5.5 Upgrade Guide: http://goo.gl/zw0e3p
VMware vSphere 5.5 VM Administration Guide: http://goo.gl/LPXLTX
VMware vSphere 5.5 Resource Management Guide: http://goo.gl/LUj1z2
VMware vSphere 5.5 Performance Best Practices Guide: http://goo.gl/alsKnd
VMware vSphere 5.5 Availability Guide: http://goo.gl/idbZXo
VMware vSphere 5.5 Storage Guide: http://goo.gl/PcW18u
VMware vSphere 5.5 Security Guide: http://goo.gl/zfiWKR
VMware vSphere 5.5 Security Hardening Guide: http://goo.gl/E6vYCS
VMware Guest OS Installation Guide: http://partnerweb.vmware.com/GOSIG/home.html
VMware VSAN 5.5 Hardware Design Guide: http://goo.gl/qM2DIS
VMware VSAN 5.5 Network Design Guide: http://goo.gl/PDEhxz
VMware VDP/VDPA 5.5 Administration Guide: http://goo.gl/yN9K96
VMware Site Recovery Manager 5.5 Administration Guide: http://goo.gl/d00TfT
VMware Technical Publications Glossary: https://www.vmware.com/pdf/master_glossary.pdf