Magnetic disk data backup system and method supporting nought backup window
A data backup, disk-level technology, applied in the field of information security, can solve the problems of poor application transparency and generality, and achieve the effect of high business application independence and enhanced versatility
Inactive Publication Date: 2008-09-03
INST OF COMPUTING TECH CHINESE ACAD OF SCI
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[0010] In order to overcome the defects of poor application transparency and versatility of existing disk-level data backup supporting zero backup window, the present invention provides a disk-level data backup system and method supporting zero backup window
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[0054] A disk-level data backup system and method supporting a zero backup window provided by the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0055] figure 1 A backup system supporting a zero backup window according to an embodiment of the present invention is shown, including a backup control device A, a read-before-write device B, a backup read device C, and a disk filter drive device D.
[0056] The backup system also includes a backup snapshot table and a monitoring snapshot table. There are no specific requirements for the storage locations of the backup snapshot table and the monitoring snapshot table, as long as the device that needs to access the snapshot table can access it; however, in order to obtain better access efficiency , the preferred implementation is to place the backup snapshot table in the user state, and place the monitoring snapshot table in the kernel state. Each bit in e...
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The invention provides a magnetic disc grade data backup system for supporting a zero backup window and a method thereof. The system comprises a backup control device, a fore-writing read device, a backup read device, a magnetic filter drive device, a backup snap list and a monitor list. The system obtains the backup snap list from the magnetic disc or the magnetic filter drive device and reads data on magnetic disc sector which need to be backed up; the fore-writing read device completes fore-writing read operation matching with the magnetic filter driver, reads data from the magnetic disc after receives signal of capturing writing operation sent by magnetic disc filter device; the magnetic filter driving device marks the object sector of writing operation in the monitor snap list and uses the marked object sector as a basis of incremental backup. It is not need to stop the affair application in case of using the invention to back up data, the invention hardly effects the affair application and supports the affair application of 24*7 continuous operation; the invention is realized in magnetic grade and is irrelevant to concrete upper layer affair, the backup method and realized backup system have more wide universality and application scope.
Description
technical field [0001] The present invention relates to the technical field of information security, and more specifically, the present invention relates to a disk-level data backup system and method supporting a zero backup window. Background technique [0002] With the development of computer technology and the improvement of informatization, people's dependence on information has also increased. The highly centralized storage of information in the IT environment has greatly improved the automation of information and data management, and improved the Operational efficiency reduces operating costs. But at the same time, the risk is also increasing, and data loss caused by disasters may cause huge losses. [0003] In order to avoid adverse effects caused by disasters, it is necessary to perform regular or real-time backup of data. With the increasing amount of data to be protected, the time required for a data backup is also getting longer and longer. At the same time, as...
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IPC IPC(8): G06F11/14G06F3/06
Inventor 云晓春王树鹏吴志刚李树豪
Owner INST OF COMPUTING TECH CHINESE ACAD OF SCI