Learn about IBM FlashSystem 840 RAS provides better Performance and data Protection. IBM uses over-provisioned space” to increase overall system reliability by adding extra NAND Storage space and spreading write activity out across even more flash memory. For more information on IBM FlashSystem, visit http://ibm.co/10KodHl. http://www.scribd.com/doc/210951133/IBM-FlashSystem-840-RAS-for-Better-Performance-and-data-Protection