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Storage device and storage system

A technology for storage devices and storage systems, applied in storage systems, protection of storage content from loss, memory address/allocation/relocation, etc., can solve problems such as inoperability, and achieve high reliability and high speed effects

Inactive Publication Date: 2006-08-16
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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  • Storage device and storage system
  • Storage device and storage system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0040] figure 1 is a schematic diagram showing an example of the configuration of the storage device according to Embodiment 1 of the present invention. figure 2In the storage device according to Embodiment 1 of the present invention, it is expressed in figure 1 A configuration diagram of an example of a system in which a host computer is connected to the shown storage device.

[0041] figure 1 The shown storage device includes, for example, a drive selection unit 1, a hard disk drive (HDD) (first storage device) 2, a nonvolatile memory drive (second storage device) such as a flash memory drive (FMD) 3, and an interface ( I / F) section 4 etc. constitute. Moreover, in figure 2 In this configuration, a host computer composed of, for example, a CPU 5 and an ATA (AT Attachment) controller 6 is connected to the interface unit 4 of the above-mentioned storage device.

[0042] The above-mentioned hard disk drive (HDD) 2 has a magnetic storage medium and a controller for control...

Embodiment approach 2

[0054] Figure 4 is a schematic diagram showing an example of the configuration of the storage device according to Embodiment 2 of the present invention. Figure 4 The shown storage device is constituted by, 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.

[0055] The structure other than the above-mentioned backup control unit 7 is the same as the above-mentioned figure 1 The same, so the description is 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 non...

Embodiment approach 3

[0060] Figure 6 is a schematic diagram showing an example of the configuration of the storage device according to Embodiment 3 of the present invention. Figure 6 The shown storage device is composed of, 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.

[0061] The configuration other than the above-mentioned code data detection section 8 is the same as the above-mentioned figure 1 The same, so the description is omitted. The above-mentioned code data detection part (the second control unit) 8 is as above-mentioned, for example figure 2 As shown, the host computer is connected to the interface part 4, and has the following functions: when data including error detection and correction codes such as ECC (Error Correcting Code, Error Correcting Code) are input from the host computer to the hard disk drive (HDD) 2 Next, only a portion of the code data is...

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Abstract

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

technical field [0001] 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 [0002] According to the study of the inventors of the present invention, regarding the technology of the storage device, the following technology is considered. [0003] 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. [0004] However, as a result of studies by the inventors of the present invention regarding the technology of the storage device described above, the following has been clarified. [0005] For example, hard disk drives (HDDs) as described above are mounted on various consumer devices and the like due to red...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/06G06F12/16G06F12/08G06F12/0802
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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