Chandrasen,
You are going to use the rackmount server to install CUCM.
Therefore you don't need to install any Windows OS.
Yo uwill need to install VMWare ESXi 4.x (boot directly from the VMWare install DVD)
A good documentation to start with is :
http://docwiki.cisco.com/wiki/Unified_Communications_Virtualization
In terms of license, have a look at:
http://docwiki.cisco.com/wiki/Unified_Communications_VMWare_Requirements#Required_VMware_Licensing_and_Customer_Purchase_Options
Required VMware Licensing and Customer Purchase Options
VMware licenses software on a per-populated-physical-CPU-socket basis (not physical CPU cores or virtual CPUs or virtual CPU cores). Each populated CPU socket per server requires a VMware license (with VMware product and version that is supported by Cisco UC).
While VMware ESXi is mandatory for UC to run on UCS servers, customers may purchase this license from any of the following sources:
- From Cisco, as a preset “per-server” Cisco Collaboration part number. This part number is separate from server hardware part numbers. You can use the same part number for Cisco UCS B-Series and C‑Series deployments. Note that for the Cisco UCS B-Series, you need to add this part number to a group of data center part numbers ordered through the Netformx DesignXpert ordering tool UCS Advisor. Only VMware ESXi Standard Edition is available via this option. The part number is “hard-coded” for two CPU sockets (no more, no less) and one year service subscription (no multi-year or auto-renewals).
- From Cisco, as an option under a build-to-order “per CPU socket” data center part number for the server: Note that for the Cisco UCS B-Series, you must order this option through the Netformx DesignXpert ordering tool UCS Advisor. Only VMware Advanced, Enterprise or Enterprise Plus Editions are available via this option. One year and three year service subscription options are available.
- From VMware directly or other 3rd-party: With this option, you can order any VMware ESXi Edition you want, as well as take advantage of any existing customer licensing arrangement with VMware (such as a site or enterprise license).
- When running Virtual machines with more than 4 vCPUs, VMWare ESXi Enterprise Plus license is required by VMWare.
For part number and SKU examples, see Table 1 of the UC on UCS page at www.cisco.com/go/swonly . Cisco employees and Channel Partners may also consult the UC on UCS chapter of the Cisco User Connect Licensing ordering guide on Cisco Partner Central.
Note: in all cases, the customer is required to have a valid service contract with VMware to be supported
