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Storage Class Memory
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Unleashing a Next-Gen Flash Architecture
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Reducing Power with the HL Interface
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Storage Class Memory (2009)

Introduction

Replacing or augmenting rotating magnetic disk storage with solid state storage promises vast improvements in computer performance and power consumption. This technology has been termed Storage Class Memory or SCM1. While there are many emerging memory technologies with potential for SCM application, this paper focuses on proven NAND Flash technology. Current mainstream NAND Flash memory devices have a slow 40MB/s interface that does not allow many devices to be connected to a single channel. Today’s HLNAND devices feature a 266MB/s interface and support a virtually unlimited number of devices on a channel, while also offering lower interface power. Using HLNAND, Storage Class Memory is viable today using proven NAND Flash technology.


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