Safe data backup method
A data backup and security technology, applied in the field of network storage, can solve problems such as performance waste, disk loss, and energy waste, and achieve the effects of avoiding read and write overhead, improving storage performance, and reducing addressing operations
Inactive Publication Date: 2015-07-15
成都博元时代软件有限公司
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Problems solved by technology
Even considering the additional requirements for bandwidth such as video playback, backup and recovery, there is a serious performance waste when using storage clusters, accompanied by serious energy waste and disk loss. In order to calculate the verification data, data writing requires additional Read and write overhead and latency reduce the throughput of the storage cluster
On the other hand, when the data blocks written to the storage cluster are random, the disk needs to address the new data location. At this time, the performance of random read and write transmission is lower than that of sequential read and write transmission.
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[0029] The following and accompanying appendices illustrating the principles of the invention Figure 1 A detailed description of one or more embodiments of the invention is provided together. The invention is described in connection with such embodiments, but the invention is not limited to any embodiment. The scope of the invention is limited only by the claims and the invention encompasses numerous alternatives, modifications and equivalents. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. These details are provided for the purpose of example and the invention may be practiced according to the claims without some or all of these specific details.
[0030] One aspect of the present invention provides a method for safely backing up data, so as to improve the write performance of a storage cluster in sequential data storage. figure 1 is a flowchart of a method according to an embodi...
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The invention provides a safe data backup method, which comprises the following steps that memories in a storage cluster are divided into a plurality of groups, in addition, the parallel reading and writing modes are arranged in each group through parallel addressing; the disc scheduling is carried out according to historical information of the request queue, the distribution region of reading and writing access in a logic space and the time-space distribution features; the disc data flow rate is used as a parameter, and the random reading and writing filtering is realized through pre-defining a cache strategy. The invention provides a storage method, the additional reading and writing expenditure generated by check data generation is avoided in the disc write-in process, through the sequential data write-in, the addressing operation is effectively reduced, and the storage performance is improved.
Description
technical field [0001] The invention relates to network storage, in particular to a method for storing and processing large data. Background technique [0002] In a large-scale storage system, in order to improve the reliability of the storage system, improve IO performance, and meet the storage requirements of massive data, multiple storage clusters are combined to form a unified storage device, such as dispersively storing data on different disks in the cluster The above guarantees parallelism, and adopts the redundancy check mechanism to obtain large capacity and high data transmission rate while ensuring data security. For storage systems that read and write data sequentially, the requirements for data transmission bandwidth are generally not strict, but Higher requirements on data reliability and storage space. Even considering the additional requirements for bandwidth such as video playback, backup and recovery, there is a serious performance waste when using storage ...
Claims
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IPC IPC(8): G06F11/14G06F12/06
Inventor 杨立波
Owner 成都博元时代软件有限公司