Solid State Storage Total Cost of Ownership versus a Really Low Price Today
Four areas that should be considered are:
- Cost of Qualification and BOM Control
- Cost of Failure
- Cost of Obsolescence
- Cost of Corrupted or Lost Data
An often overlooked area is the cost of qualifying new components for an OEM’s system. For example, if a program’s life is 5 years and the internal components of the storage device changes yearly or more, at least five qualifications would need to be funded to ensure the product meets the system’s needs.
Many claims of identical form, fit and function problematic since the trace width of the NAND components shrinks and the reliability challenges increase as well. In some instances, vendors change SLC NAND components to MLC NAND to lower market prices while increasing their profits. For a good understanding of the challenges, see our white paper: SLC vs MLC NAND and The Impact of Technology Scaling.
Some applications only require precursory testing for qualification. Others require several months of testing, possibly regression testing for all software combinations and extreme environmental and electrical qualification. Costs can range from a few hundred dollars to the hundreds of thousands.