In March last year, virtualization.info reported about Virsto, a company providing virtual storage optimization software for Microsoft Hyper-V called Virsto One. Now Virsto has renamed Virsto One to Virsto VSI and introduces another product Virsto VDI which is targeted for use with Virtual Desktop environments running either Microsoft VDI or Citrix XenDesktop.
Both products share the same Virsto Virtual Storage Engine (VSE), which compromises 90% of the products code. It provides a solution to improve efficiency and performance of Hyper-V virtual machines, by hijacking and optimizing their interaction with the underlying storage. It is a lightweight solution that installs inside the Hyper-V parent partition and places a filter driver between VMs virtual hard drives (VHDs) and physical volumes .