One of the biggest challenge in managing virtual infrastructure is proper Capacity management of your infrastructure. if anyone had performance problems on the vm because of overloaded ESX Server knows what I am writing about.
VMware release technical paper about Capacity IQ, which helps Administrators to mange capacity properly for their Virtual Infrastructure.
Demo license is for 60 days, it’s enough if you wanna know what is going on in your environment, appliance can be download from here
http://www.vmware.com/files/pdf/techpaper/VMW-WP-Managing-Capacity-using-vCenter-CapacityIQ.pdf
