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Information storage device and control method thereof

A technology for information storage and equipment, which is applied in the field of information storage equipment and its control, and can solve problems such as loss of write data

Inactive Publication Date: 2009-08-05
KK TOSHIBA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If a power abnormality (such as a power failure) occurs before the writing of the write data is completed, the write data will be lost

Method used

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  • Information storage device and control method thereof
  • Information storage device and control method thereof
  • Information storage device and control method thereof

Examples

Experimental program
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Embodiment Construction

[0021] Various embodiments according to the present invention will be described below with reference to the accompanying drawings. Generally, according to one embodiment of the present invention, an information storage device includes a non-volatile storage medium, a non-volatile memory, a buffer, and a controller. The non-volatile memory is configured to store specific data blocks to be read by the host device, and write data to be written to the non-volatile storage medium. The buffer is configured to temporarily store write data transmitted from the host device. The controller is configured to delete from each specific data block stored in the non-volatile memory when the free space in the non-volatile memory is smaller than a given data size Synchronous data of the same data block also exists on the medium, and the write data stored in the buffer is written into the non-volatile memory.

[0022] figure 1 The structure of the information storage device 11 according to on...

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Abstract

The invention relates to an imformation storage device and its control method. According to one embodiment, an information storage device includes a non-volatile storage medium, a non-volatile memory configured to store specific data blocks to be read for a host device and write data to be written to the non-volatile storage medium, a buffer configured to temporarily store write data transmitted from the host device, and a controller. The controller is configured to delete synchronized data the same data block as which exists on the non-volatile storage medium among the specific data blocks stored in the non-volatile memory if the free space of the non-volatile memory is smaller than a given data size, and to write the write data stored in the buffer to the non-volatile memory.

Description

technical field [0001] An embodiment of the present invention relates to an information storage device and a control method thereof, wherein the information storage device has a non-volatile memory as a cache. Background technique [0002] Generally, in an information processing device such as a computer, an information storage device such as a hard disk drive is used. Information storage devices store information on non-volatile storage media such as hard disks. [0003] Recently, an information storage device having a nonvolatile storage medium and a nonvolatile memory as a buffer has been developed. Typically, non-volatile memory is referred to as a non-volatile cache. An information storage device with a non-volatile cache is capable of high-speed read and write access to data specified by the host. In addition, an advantage of an information storage device having a non-volatile cache is that power consumption can be reduced since data can be accessed without spinning...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F12/08
CPCG06F3/0625G11B2220/61G06F12/0804G06F3/0611G11B2020/10759Y02B60/1246G06F3/0656G06F3/0676G06F12/0246G06F3/0679G11B20/10527G06F2212/1028G06F2212/2022G11B2220/2516G06F12/0866G06F2212/7205Y02D10/00
Inventor 仁田达雄
Owner KK TOSHIBA