JP2006172680A - Raid striping hard disk - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve a problem in which high speed reading/writing of data is not actualized and damage and breakage of the data is not prevented unless various conditions such as a cost, the arrangement place of a hard disk, or the capacity of a power source are considered since not less than two hard disks are required in a conventional RAID. <P>SOLUTION: The number of the head arms of the hard disk is set to be not less than two, so that a RAID function is performed by one hard disk. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to speeding up reading and writing of data on a hard disk and preventing damage to data.

  As shown in the attached drawing and FIG. 1, the conventional technology connects a plurality of hard disks and a raid control device to distribute one data and read / write it to each hard disk. With just one hard disk, reading and writing data that takes 1 minute can be done in 15 seconds with four hard disks as shown in FIG. This is called striping, one of the raid functions.

  In addition, there is a function called mirroring, in which the same data is read from and written to a plurality of hard disks, and even if one hard disk fails, data can be read from, read from, or restored from another hard disk.

  Other raids are a combination of striping and mirroring.

  As described above, the conventional raid requires a raid control device and a large number of hard disks, and it is difficult to store the hard disk in the PC case, and multiple hard disks must be purchased. It was necessary to pay attention to the capacity.

  Raid striping is performed in which two or more head arms are mounted in one hard disk, and data is distributed and read / written by one hard disk.

  If any head arm fails, data is read and written by another head arm, and data is copied and transferred to another hard disk to prevent damage to the data before finally reaching a complete failure.

  A single hard disk can read and write data faster and protect data, eliminating the need to worry about cost, location, and power supply capacity.

  Since raid striping can be performed by one unit, even a small personal computer such as a notebook computer that can be equipped with only one hard disk can be accelerated by the raid striping function.

  Two or more head arms (4 head arms in the attached figure, FIG. 2) and a raid control device (electronic board) are mounted in the hard disk.

  Since the hard disk is a precision device, it is difficult for an individual to manufacture and there is no example.

    It is the example which connected the main board with a raid control board or a raid control device, and four hard disks.     It is the example of a top view which installed 4 head arms in the hard disk.

Explanation of symbols

1 Raid control board or main board with raid control device 1d Hard disk 1
2d hard disk 2
3d hard disk 3
4d hard disk 4
10 Hard disk (platter)
11 Head arm 1
12 Head arm 2
13 Head arm 3
14 Head arm 4

Claims (1)

  Increasing the number of hard disk head arms and increasing the number of heads to increase the speed of data read / write, and another head arm instead reads / writes data read / write failure due to failure of one of the head arms. Hard disk that prevents damage and damage.

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