Reading Time: 5 minutes PernixData FVP is a Flash Hypervisor software aggregates server flash across a virtualized data center, creating a scale-out data tier for accelerating reads and writes to primary storage in a simple and powerful way. Was one of first (probably the first) to implement a fault-tolerant write back acceleration. As part of the PernixPro program, I’ve got the opportunity to test various version of this product that actually support all version of ESXi 5.x (so is not limited to the 5.5 version) and works both with the vSphere Client and also with the vSphere Web Client.