There is a lot of lip service paid to BOM Control, since it is a lot easier to claim than to execute. With regularly shrinking NAND trace widths and revisions to the controller silicon/firmware it takes real commitment to maintain True BOM Control. This commitment comes with the cost of proper material planning, purchasing and stocking months to years' worth of end-of-life components as well as having production processes which guarantee gaming a stable BOM.
BOM (Bill-Of-Material) Control is one of the largest differentiators for Industrial offerings. True BOM Control locks down the controller and NAND silicon revisions as well as the firmware internal to the flash storage devices. It is very important to companies who have long gaming qualification cycles to make sure their qualification efforts are meaningful by receiving the same BOM on production parts as was originally tested.
refer to: http://embedded-computing.com/news/benefits-industrial-flash-storage-devices/
