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Optical disc storage system and optical disc data reading and writing method

A technology for optical disk storage, data reading and writing, applied in optical recording/reproducing/erasing methods, etc., can solve the problem of limiting the performance and range of the host to read and write optical disks, and achieve the effect of improving read and write throughput.

Active Publication Date: 2017-01-25
WUHAN OPSTOR TECH LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In view of the above problems, the object of the present invention is to provide an optical disc storage system and a method for reading and writing optical disc data, aiming to solve the technical problem that the existing optical disc storage system uses a single disc data organization method to limit the performance and scope of the host to read and write optical discs

Method used

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  • Optical disc storage system and optical disc data reading and writing method
  • Optical disc storage system and optical disc data reading and writing method
  • Optical disc storage system and optical disc data reading and writing method

Examples

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Embodiment 1

[0034] figure 1 The structure of the optical disc storage system provided by the embodiment of the present invention is shown, and only the parts related to the embodiment of the present invention are shown for convenience of description.

[0035] Such as figure 1 As shown, the optical disk storage system shown includes several optical disk groups 101, an optical disk drive group 102, an optical disk library controller 103 and a front-end host 104, and the optical disk drive group 102 includes a plurality of optical disk drives, such as figure 1 In the optical disc drive 1-m shown in , the optical disc group 101 includes multiple optical discs, and the number is not greater than the number of optical disc drives. The optical disc library controller 103 is connected with the optical disc drive group 102 and the front-end host 103, and the front-end host Under control, the optical disc library controller loads one of the optical disc groups into the optical disc drive group for...

Embodiment 2

[0045] This embodiment provides a method for reading and writing optical disc data. The method is applied to the optical disc storage system described in Embodiment 1, and the method includes a data reading method and a data writing method.

[0046] Such as Figure 4 As shown, the method of writing data includes:

[0047] Step S401, the front-end host sends a write data command to the optical disc library controller;

[0048] Step S402, the optical disc library controller parses the write data command to obtain a logical address;

[0049] Step S403, obtaining the corresponding physical address according to the mapping relationship between the logical address and the physical address;

[0050] Step S404, loading an optical disc group where the physical address is located into the optical disc drive group;

[0051] Step S405, burn the data blocks in parallel to the optical disc group according to the allocation strategy.

[0052] Such as Figure 5 As shown, the method of re...

Embodiment 3

[0061] This embodiment provides a method for reading and writing optical disc data. The method is applied to the optical disc storage system described in Embodiment 1, and the method includes a data reading method and a data writing method.

[0062] Such as Figure 6 As shown, the method of writing data includes:

[0063] Step S601, the front-end host sends a write data command to the optical disc library controller;

[0064] Step S602, the optical disc library controller parses the write data command to obtain a logical address;

[0065] Step S603, obtaining the corresponding physical address according to the mapping relationship between the logical address and the physical address;

[0066] Step S604, loading an optical disc group where the physical address is located into the optical disc drive group;

[0067] Step S605, generating a verification data block according to the data block and the verification algorithm;

[0068] Step S606, burn the data blocks in parallel t...

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Abstract

The invention is applicable to the technical field of data storage, and provides a compact disc storage system and a compact disc data reading and writing method. The system comprises a plurality of compact disc groups, a compact disc driver group, a compact disc library controller and a front end host, wherein the compact disc driver group comprises a plurality of compact disc drivers; under the control of the front end host, the compact disc library controller loads one compact disc group into the compact disc driver group to carry out parallel reading and writing; a mapping table of the mapping relationship between a logic address and a physical address is stored in the compact disc library controller; the compact disc library controller is used for resolving reading and writing instructions sent out by the front end host to obtain the logic address; and the physical address of a corresponding compact disc is found according to the logic address, and the corresponding compact disc is read and written. The compact disc storage system and the compact disc data reading and writing method have the advantages that batch compact discs can be grouped; one compact disc group is used as a data reading unit; and the batch compact discs realize the integral data organization, coding and concurrent access by using the group as the unit, so that the integral reading and writing throughput rate, safety and reliability of a compact disc system are greatly improved.

Description

technical field [0001] The invention belongs to the technical field of data storage, and in particular relates to an optical disc storage system and an optical disc data reading and writing method. Background technique [0002] In the era of big data, the data growth rate does not increase, which in turn puts a huge pressure on storage capacity and performance. More and more important data need to be stored for a long time. Among them, optical disk storage is a cheap long-term data storage method. [0003] An optical disc storage system is a computer device that reads and writes data from an optical disc through an optical disc drive. At present, an optical disc storage system includes a front-end host, an optical disc library controller, an optical disc drive and an optical disc library. The optical disc drive can read and write the data of the optical disc, and realize data communication with the front-end host system through the data interface. The storage space of an...

Claims

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Application Information

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IPC IPC(8): G11B7/004
Inventor 曹强姚杰谢长生彭晨
Owner WUHAN OPSTOR TECH LTD