Add Flash storage to the equation and read how PureStorage sees EVO.Rail and Flash and how they may or may not be combined in the future in AFHCIA's (all-flash hyper-converged infrastructure appliances).
VSPEX Blue is the one hot topic today and is EMC's entry into the HCIA (hyper-converged infrastructure appliance) market! Based on VMware EVO:Rail and VSAN and preconfigured with RecoverPoint and EMC CloudArray software (among others). Please read the official press release here and read Avnet's release here! positioning of EVO:Rail VSAN and EMC ScaleIO from EMC which seem to address a very similar market and problem. I found that article from "The Register" to be very helpful in understanding where which makes sense and what the similarities are.