The storage market has enjoyed a tremendous run over the past few years. With demand for high-capacity storage exploding in order to feed the trend in big data processing, enterprises and hyperscale cloud computing vendors have been buying memory of all types hand-over-fist.Western Digital (NASDAQ: WDC) makes non-volatile memory (which retains data even when power is turned off), both on hard disk drives, as well as newer NAND flash memory technology (by way of its 2016 Sandisk acquisition).