Disk array system
A disk array and hard disk technology, applied in the direction of input/output to record carrier, etc., can solve the problems of distributed parity verification codes, difficult management, difficulty in system maintenance and high purchase cost, and achieve high random write speed and low configuration cost effect
Inactive Publication Date: 2011-08-03
PROMISE TECHNOLOGY
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Problems solved by technology
[0007] The third type of disk array and the fourth type of disk array structure, although the sequential read and write and random read have good performance, but the bottleneck of the random write speed is mainly limited by the hard disk of the same bit write speed of
However, the distribution of parity verification codes in the fifth type of disk array is not easy to manage due to its scattered distribution, and its data management and error recovery algorithms are also relatively complicated, which makes the difficulty of system maintenance and purchase cost relatively high
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[0023] see figure 1 , figure 1 A schematic diagram of a disk array system 1 according to the first specific embodiment of the present invention is shown. Such as figure 1 As shown, the disk array system 1 includes the same bit storage unit 10, a plurality of data storage units and a disk array controller 18. In this embodiment, the disk array system 1 includes three sets of data storage units 12, 14 and 16, But the present invention is not limited thereto, in actual application, the quantity of the data storage unit of disk array system 1 can be adjusted by various individual factors such as the size requirement of visual storage space, setting expenses, application purpose, it is those skilled in the art well known. The disk array controller 18 can be respectively coupled to the co-bit storage unit 10 and the data storage units 12 , 14 and 16 , and the disk array controller 18 is used for executing instructions for reading or writing to the above storage media.
[0024] ...
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The invention discloses a disk array system. The disk array system comprises a plurality of data storage units and a parity storage medium, wherein the parity storage medium can be single storage hardware or a logic storage module consisting of a plurality of storage units; a disk array is formed by matching the parity storage medium and the data storage units; the parity storage medium is used for storing parity check code information of the disk array; and a first writing speed of the parity storage medium is higher than a second writing speed of each data storage unit. The disk array system with high random writing speed can be constructed with lower setting cost.
Description
technical field [0001] The present invention relates to a disk array system, and in particular to a disk array system with a faster random write rate. Background technique [0002] With the popularization and development of digital technology, various documents, files, letters and even personal information or various multimedia audio-visual information closely related to life have been generally digitized. All kinds of important personal data, company files and even government files rely on electronic systems for storage and transmission. However, the digital storage device used by general personal computers is usually a single hard drive (Hard drive). The capacity of a single hard disk is limited, and its writing and reading speeds are also limited by its hardware architecture (such as read-write head, hard disk speed, bus bandwidth), and there is a certain speed bottleneck. In addition, once a single hard disk encounters a power outage or is attacked by viruses or hacker...
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IPC IPC(8): G06F3/06
Inventor 黄承一林欣平
Owner PROMISE TECHNOLOGY