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Systems and methods for a mass data storage system having a file-based interface to a host and a non-file-based interface to secondary storage

  • US 10,126,959 B2
  • Filed: 07/31/2015
  • Issued: 11/13/2018
  • Est. Priority Date: 02/04/2005
  • Status: Active Grant
First Claim
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1. A data storage system, comprising:

  • a first non-volatile mass storage device coupleable to a host system via a first interface, wherein;

    the first interface utilizes a file based protocol to identify data via a unique file identifier and an offset within a file, andthe offset points to a location in the file other than a beginning of the file;

    a second non-volatile mass storage device coupled to the first non-volatile mass storage device; and

    a disk controller located on the second non-volatile mass storage device,wherein;

    the disk controller facilitates data transfers between the second non-volatile mass storage device and the first non-volatile mass storage device,the first non-volatile mass storage device is a solid-state non-volatile memory that operates as a primary storage device,the second non-volatile mass storage device is a magnetic hard disk that operates as a secondary storage device,the first non-volatile mass storage device includes a disk file system and a disk driver interfacing with the magnetic hard disk via a logical interface that maps data files from a file based protocol to a logical address space within the second non-volatile mass storage device,the second non-volatile mass storage device interfaces with the host only through the first non-volatile mass storage device,the first non-volatile mass storage device and/or the second non-volatile mass storage device store data from the host system, andthe host system accesses both the first and second non-volatile mass storage devices using the file based protocol rather than the host system itself utilizing logical addressing to access the second non-volatile mass storage device.

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