Which tool is used to estimate the hardware server resources that are required for a...

 The Cisco Unified Communications Sizing Tool is a web-based tool that helps system engineers to estimate the hardware server resources that are required for a Cisco Unified CCX deployment. The tool covers sizing for various components and features of the Unified CCX system, such as call control, contact center, voice messaging, conferencing and collaboration, presence, and voice gateways. The tool also provides recommendations for the optimal virtual machine (VM) configuration and placement based on the user input and the sizing rules. The tool can generate a sizing report that includes the details of the hardware and VM requirements, as well as the network bandwidth and power consumption estimates. References: Cisco Collaboration Sizing Guide - Sizing Tools Overview 1 and Using the Cisco Collaboration Sizing Tool 2