Systems and methods for tiered non-volatile storage devices

Abstract

Various embodiments of the present invention provide systems and methods for tiered non-volatile storage. As an example, a multi-tiered non-volatile storage device is disclosed that includes a hard disk storage; a solid state, non-volatile storage that caches a subset of data included on the hard disk storage; and a controller circuit that is operable to control data transfer between the solid state, non-volatile storage and the hard disk storage

Description

technical field [0001] The present invention relates to systems and methods for implementing storage devices, and more particularly, to systems and methods for implementing storage devices with storage layers. Background technique [0002] Hard drives are often designed to write data on a sector basis. Thus, for example, writing to a hard drive may involve writing 4096 bytes during a given write transaction illustrated in FIG. 1 . According to FIG. 1 , a data set of 512 bytes is provided by the host computer to be written to the hard drive (step A). In turn, the hard drive retrieves 4096B the data set 120, which includes the address space 130 to be written (step B). The hard drive overwrites this address space with the data to be written 110, and then writes the entire 4096 byte block back to non-volatile memory (step C). This read / modify / write process allows support for mismatches in the size of memory blocks supported by the host and supported by the hard drive. Howeve...

AI Technical Summary

Problems solved by technology

However, this method incurs a considerable delay when accessing the hard drive

Images