Lets Design, Implement and do Administration of ESX3

Virtualization with VMWare Infrastructure 3.0


Posted by Preetam on April 16, 2007


Most ESX Server licensing is on a per-processor basis for each host, meaning that an ESX Server host with two processors requires two license keys to activate a given feature, and a four-processor host requires four License keys to activate the feature. Special considerations include:•Dual-core processors count as one processor.•You cannot partially license a multiprocessor machine. To migrate a powered-on virtual machine between hosts, each ESX Server processor involved must have a VMotion license key. For example, if you use VMotion from a dual-processor ESX Server host to another Dual-processor host, you must have four VMotion licenses. Sample applies to DRS, each processor must have DRS license, remember licenses are per processor. As a pre-requiste DRS requires appropriate Vmotion Licenses for all hosts on the DRS clusters. VirtualCenter Server uses a “heartbeat” mechanism to check whether the license server is reachable and to see if there have been any changes in the license file. The heartbeat interval is five minutes. Therefore, it might take VirtualCenter Server as long as five minutes to detect if there are license changes or if the license server has become unavailable.

Where license file is stored ?

Virtual Center : C:\Program Files\VMware\VMware License Server\vmware.lic

ESX Server : /etc/vmware/vmware.lic

Do not combine host-based and license server-based licensing information in a single file. The license file will not work. A single license file can contain either host-based or license server-based license information.

Host based licenses are for a specific ESX Server and its supported features, such as Virtual SMP and VMWare consolidated backup (VCB). When you purchase standard or Enterprise VI3 product make sure you purchase standard license type. In any ways when you purchase Vi3 Enterprise product, you get add-on licenses free with it.


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