View Storage Accelerator  The View Storage Accelerator provides optimization of the overall storage connections for the View environment. It uses in-memory caching of common block reads (Content Based Read Cache) for any type of desktop (persistant or non-persistant) that is completely transparent and runs at the host level (no storage technology required) What’s cool about it is the significant drop is IOPS used when running large scale View environments. This in turn allows you to scale your View environment further without having to change the hardware underneath. Plus it helps to give a consistant user experience even when there are high impact workloads running.
Here is the VMWare View 5.1 package and License info.     More details can be found from  [URL]
VMWare View 5.1 Package and License Info