I recently recorded a webcast that focuses on an important topic related to virtualization management: Capacity Planning.  The presentation is titled, Capacity planning: New challenges for your virtual infrastructure and is sponsored by VKernel.  From the abstract:

Virtualization expert Anil Desai discusses the capacity planning and management demands created by virtualizing production-level applications, creating virtual infrastructures and server platforms, such as blade servers.

There are new challenges posed by virtualizing on a mix of blades or high-density servers and x86 in the same environment. Desai warns of the common mistakes made in capacity planning as virtualization usage is increased and offers ways to avoid them. Finally, he taps his own experiences with capacity planning and reveals best practices he uses everyday.

You can download the webcast for free (registration is required).