It's about time Western Digital purchased a NAND manufacturer. They were in negotiations for a flash memory manufacturer in 1999, but backed out. This will be helpful to reduce the cost of the NAND used in HGST SSD products and WD SSHD products. I sure hope they keep SanDisk separate like with HGST. I think having 3 subsidiaries: HGST, WD and SanDisk with their individual manufacturing, but sharing R&D would be best.