infrastructure and hardware sizing

Hi All,

Is there any documents/white paper or tool to make infrastructure and hardware sizing assessment in dynamics crm 2015?

ie:

1. database or storage needed for 3 years ahead and associated with number of users that access to dynamics crm.
2. bandwidth required so we can estimate in production server need load balancing or not.

I have read from Implementation guide document (CRMIGv7_PlanandDeploy) but I think there is not fulfill my needed.

thanks.