Hitachi Data Systems has announced a flash storage tray for Virtual Storage Platform (VSP) arrays, utilising its own in-house developed flash controller.It's called Hitachi Accelerated Flash (HAF) and uses non-volatile memory with two bits per cell. The controller is a multi-core chip managing flash memory dies rather than solid-state drives.Roberto Basilio, a HDS veep for infrastructure platforms product management, claimed the silicon extends the raw endurance of the multi-level-cell (MLC) flash and makes it perform like single-level-cell (SLC) flash, which is faster than MLC: "The result is the lowest cost-per-bit of any enterprise MLC flash