Changes to the vRAM licensing model introduced on July 12, 2011

After much debate on the new vRAM licensing model on blogs, communities, and forums, VMware have now addressed these concerns by providing the following changes :-

  • Increased vRAM entitlements for all vSphere editions, including the doubling of the entitlements for vSphere Enterprise and Enterprise Plus.
  • Capped the amount of vRAM count in any given VM, so that no VM, not even the “monster” 1TB vRAM VM, would cost more than one vSphere Enterprise Plus license.
  • Adjusted the model to be much more flexible around transient workloads, and short-term spikes that are typical in test & dev environments for example.
Below is the new vRAM licensing model :-

New vRAM Model

[ii] this limit is GB of physical RAM per physical server
Nice to see the free Hypervisor will now allow 32GB.
VMware are also releasing a vSphere Licencing Advisor tool, which will make it easier for customers too see the licencing changes to their current environment.
The application can be installed on any windows machine that can connect to vCenter Server.
The information gathered is a point in time picture of vRAM usage, and you can exit the tool and re-run it if you want to get updated vRAM usage numbers.
The tool maps editions to the vSphere 5 equivalent edition using standard entitlement paths. It does not capture information on Linked Mode and instead calculates pools as if all vCenter Servers are linked together.
The tool also caps the amount of per VM vRAM usage at 96GB. The results of the tool can be exported to a CSV file so data can be more easily viewed.
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