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Control method and system based on virtual tape library backup and near-line storage node

A technology of virtual tape library and storage node, applied in the system and near-line storage node, the control field based on VTL backup, can solve the problems of compatibility, complicated deployment and installation, high maintenance labor cost, compatibility problems, etc.

Inactive Publication Date: 2010-04-14
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The disadvantages of this backup method are: compatibility problems between external Data Mover devices, tape libraries, and virtual tape libraries; and high hardware costs, complex deployment and installation, and high labor costs for later maintenance
[0012] Therefore, it is currently necessary to provide a technical solution for controlling backup data, which can realize the direct transmission of data between two storage devices in the SAN structure, reduce the host system resources such as CPU, memory and I / O of the production node server, and at the same time It can solve the problems of compatibility between external Data Mover devices, tape libraries and virtual tape libraries, as well as complex deployment and implementation

Method used

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Embodiment Construction

[0050] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0051] The main idea of ​​the present invention is: host channel interface driver module judges that if the destination equipment that receives the SCSI command that backup node server sends is Data Mover module, then send the message of receiving SCSI command to this Data Mover module, this Data Mover module will receive The SCSI command is sent to the SCSI command processing module;

[0052] The SCSI command processing module receives and analyzes the SCSI command, and after executing the parsed SCSI command, feeds back the execution result of the SCSI command to the Data Mover module; the Data Mover module receives the execution result of the SCSI command Afterwards, imitate the SCSI command format of the entity Data Mover device response system, and send the corresponding SCSI command response to the host channel interface driver module; th...

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PUM

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Abstract

The invention relates to control method and system based on virtual tape library backup and a near-line storage node. In the control method, a host passage interface driving module judges whether the destination device of SCSI command is Data Mover module or not, if the destination device of SCSI command is the Data Mover module, the host passage interface driving module is ordered to receive the command, and the Data Mover module transmits the command to an SCSI command processing module; after receiving, analyzing and executing the command, the SCSI command processing module feeds the result back to the Data Mover module; after receiving the result, the Data Mover module imitates an entity Data Mover device to respond an SCSI command format and transmits the corresponding command response to the host passage interface driving module; and the host passage interface driving module sends the received command response out according to the address of the destination device. By applying the invention, the problem of compatibility among the Data Mover device, the tape library and the virtual tape library is solved, and that the data is ensured to be directly transmitted between two storage devices in an SAN structure.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a VTL (Virtual Tape Library, virtual tape library)-based backup control method, system and near-line storage node. Background technique [0002] Backup is the best way for users to protect their important and irreplaceable information. Some users regularly back up recently generated data from their computers to a set of disks or tapes for reliable data storage. Backup is a data security strategy. It is to copy the original data exactly the same. Strictly speaking, two copies should be made and stored in different places. When the original data is lost or damaged, use the backup data to restore the original data so that the system can work normally. [0003] Traditional backup systems include the following methods: [0004] 1) For host-based backup, it is necessary to install a tape drive on each host to back up the local system. In this structure, the tape libra...

Claims

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Application Information

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IPC IPC(8): G06F11/14G06F3/06H04L29/08
Inventor 刘步荣
Owner ZTE CORP
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