Nand interface capacity extender device for ssds

Abstract

A system and method for a solid state drive comprising a system controller and one or more extender devices coupled to the system controller is disclosed, where each extender device is coupled to a plurality of NAND storage devices and each NAND storage device comprising a plurality of NAND flash memory cells.

Description

[0001] Cross References to Related Applications [0002] This patent application claims priority to U.S. Provisional Application No. 61 / 862,466, filed August 5, 2013, entitled "NANDINTERFACECAPACITYEXTENDERDEVICEFOREXTENDINGSSDCAPACITY, PERFORMANCE, ANDRELIABILITY," the entire contents of which are incorporated herein by reference. technical field [0003] The present invention relates to NAND solid state drives. Background technique [0004] Solid state drives (SSDs) have demonstrated many advantages over hard disk drives (HDDs), including higher performance, lower power consumption, and smaller footprint. SSDs can pack many small NAND devices (where NAND devices can include one or more arrays of NAND flash memory cells or semiconductor dies) into a small package with high write / read performance, where HDDs must use many drives to achieve same performance. Therefore, a single SSD can replace many HDDs of the same performance class. However, to achieve the high capacity r...

AI Technical Summary

Problems solved by technology

[0011] Even though the drive strength of the controller signal can be increased as needed, commercial NAND devices have limited drive strength to keep power consumption under control and cannot drive large numbers of devices on one bus

Therefore, increasing the number of NAND devices on a NAND bus beyond 8 is difficult, and currently impractical beyond 16

Therefore, the full capabilities of the SSD cannot be utilized

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