In recent years, both industry and academia have increased their research effort in the hybrid memory management space, developing a wide variety of systems. It is worth mentioning that “hybrid” is a generic term and it can have different meanings depending on the context. For instance, a storage system can be hybrid because it combines HDD and SSD; an SSD can be hybrid because it combines SLC and MLC Flash memories, or it combines different non-volatile memories like NAND and ReRAM. In this chapter we look at all these different meanings. The last section covers over-provisioning and the Write Amplification Factor (WAF): these parameters have a great impact on SSD performances and reliability, as well as on the available storage capacity.
CITATION STYLE
Micheloni, R., Crippa, L., & Picca, M. (2013). Hybrid storage. In Springer Series in Advanced Microelectronics (Vol. 37, pp. 61–77). Springer Verlag. https://doi.org/10.1007/978-94-007-5146-0_4
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