Alastair Cook from ProfessionalVMware writes about TFD9:

At  Tech Field Day 9  last month  Infinio  came out of stealth mode and showed their upcoming storage acceleration product for the first time. The product places a caching appliance on each ESXi host to accelerate reads from NFS datastores.

For server virtualization this can be a huge help as usually around 80% of VM disk access is reads, these will usually be satisfied from the Infinio appliance. Not loading the storage array for these reads will all much better performance for the writes as well.

Read more: Infinio, cache in your ESCi server for your NFS datastores