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Storage device and storage system

A storage device and storage medium technology, applied in storage systems, instruments, electrical digital data processing, etc., can solve problems such as inoperability and achieve high reliability and high speed

Inactive Publication Date: 2008-05-28
HITACHI ULSI SYST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the other hand, even if a few bit faults occur in the system-related information, a completely inoperable situation can be expected, which becomes a fatal problem

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0048] FIG. 1 is a schematic diagram showing an example of the configuration of a storage device according to Embodiment 1 of the present invention. 2 is a configuration diagram showing an example of a system in which a host is connected to the storage device shown in FIG. 1 in the storage device according to Embodiment 1 of the present invention.

[0049] The storage device shown in FIG. 1 includes, for example, a drive selection unit 1, a hard disk drive (HDD) (first storage device) 2, a nonvolatile memory drive (second storage device) 3 such as a flash memory drive (FMD), and The interface (I / F) part 4 etc. are comprised. In addition, in FIG. 2 , the interface unit 4 of the storage device is configured such that a host computer composed of, for example, a CPU 5 and an ATA (AT Attachment) controller 6 is connected.

[0050] The above-mentioned hard disk drive (HDD) 2 has a magnetic storage medium and a controller for controlling the magnetic storage medium inside, and its c...

Embodiment approach 2

[0062] FIG. 4 is a schematic diagram showing an example of the configuration of the storage device according to Embodiment 2 of the present invention. The storage device shown in FIG. 4 includes, for example, a backup control unit 7, a hard disk drive (HDD) 2, a nonvolatile memory drive 3 such as a flash memory drive (FMD), an interface unit 4, and the like.

[0063] The configuration other than the above-mentioned backup control unit 7 is the same as that of FIG. 1 above, so description thereof will be omitted. The above-mentioned backup control unit (the second control unit) 7 has a avoidance signal as an input signal, and has the following function: when the above-mentioned avoidance signal is input, a part of data in the above-mentioned hard disk drive (HDD) 2 is extracted and transferred to the nonvolatile memory. The memory driver 3 transfers the extracted data. In addition, conversely, there is also a function of transferring data stored in the nonvolatile memory drive...

Embodiment approach 3

[0068] FIG. 6 is a schematic diagram showing an example of the configuration of the storage device according to Embodiment 3 of the present invention. The storage device shown in FIG. 6 includes, for example, a code data detection unit 8, a hard disk drive (HDD) 2, a nonvolatile memory drive 3 such as a flash memory drive (FMD), an interface unit 4, and the like.

[0069] The configuration other than the above code data detection unit 8 is the same as that of FIG. 1 above, so the description thereof will be omitted. The above-mentioned code data detecting unit (second control unit) 8, for example, as shown in FIG. Error code, Error Correcting Code) and other error detection and correction code data, only the part of the code data is extracted, and the data is stored in the above-mentioned nonvolatile memory driver 3.

[0070] In addition, when a data output command is issued from the host computer to the hard disk drive (HDD) 2, the code data detection unit outputs the data o...

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Abstract

A storage device and a storage system are provided. A storage device includes a drive selection section (1), a hard disc drive (HDD) (2), and a non-volatile memory drive (3). When an instruction such as a data I / O instruction is issued from a host such as a CPU (5) and an ATA controller (6) to the hard disc drive (HDD) (2), the drive selection section (1) receives the address value. If the address value is contained in the address space predefined, the non-volatile memory drive (3) is made to execute the instruction. Otherwise, the hard disc drive (HDD) (2) is made to execute the instruction.

Description

[0001] This application is a divisional application of the patent application with the application number "200480019451.4", the filing date being July 5, 2004, and the invention title being "storage device and storage system". technical field [0002] The present invention relates to a storage device, and more particularly, to a technology effectively applicable to a storage device and a storage system having a hard disk drive (HDD). Background technique [0003] According to the study of the inventors of the present invention, regarding the technology of the storage device, the following technology is considered. [0004] For example, a hard disk drive (HDD) or the like is used as a storage device of a personal computer or the like. In recent years, the hard disk drive (HDD) is also used as a storage device for car navigation, or as a storage device for television images like an HDD recorder. [0005] However, as a result of studies by the inventors of the present inventio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/06G06F12/0802
Inventor 东修一郎松本雅宏冲永隆幸竹村茂木全能之岸本隆行
Owner HITACHI ULSI SYST CO LTD
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