Storage device without single failure point
A storage device and memory technology, applied in the field of memory, can solve the problems of high cost, irrecoverable loss, single failure point of storage controller and memory device, etc.
Pending Publication Date: 2022-02-18
SUZHOU KUHAN INFORMATION TECH CO LTD
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- Application Information
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Problems solved by technology
In traditional storage systems, such as Figure 1a , the server 11 performs data read-write communication with multiple storage disks 31, 41 through the switch 21, but there are many single failure points in this system, if the server 11 fails or the switch 21 fails or the storage controller in the storage disks 31, 41 or failure of either memory device will result in inaccessible, irrecoverable and loss of data
Figure 1b The system can eliminate single points of failure in servers and switches by adding servers 12 and switches 22, but storage controllers and storage devices still create single points of failure
like Figure 1c , the solution of today's systems is to duplicate all storage disks to form duplicate storage disks 31', 41', but such solutions have high costs in mass data storage centers
Method used
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[0048]Various aspects and examples of the present application will now be described. The following description provides specific details for a thorough understanding and implementation of the description of these examples. However, one skilled in the art will understand that the application may be practiced without many of these details.
[0049] Additionally, some well-known structures or functions may not be shown or described in detail in order to be concise and to avoid unnecessarily obscuring the related description.
[0050] The terms used in the description given below are intended to be interpreted in their broadest reasonable manner even when used in conjunction with the detailed description of certain specific examples of this application. Certain terms may even be emphasized below, however, any terms intended to be interpreted in any limited manner will be defined explicitly and specifically in this Detailed Description section.
[0051] The first embodiment of th...
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The invention discloses a storage device without a single failure point. The device comprises two storage controllers and a plurality of storage devices; the plurality of storage devices are connected between the two storage controllers through a plurality of point-to-point data buses to form a loop; one storage controller and a part of the storage devices form a transmission and control bus group, and the other storage controller and the rest of the storage devices form another transmission and control bus group; when one of the two storage controllers fails, the plurality of storage devices and the other storage controller form a transmission and control bus group to continue control and data transmission; when any one of the plurality of storage devices fails, the remaining storage devices are rearranged and form two new transmission and control bus groups with the two storage controllers to continue control and data transmission.
Description
technical field [0001] The present invention generally relates to the technical field of memory, and in particular, to a storage device without a single point of failure. Background technique [0002] Data reliability, accessibility and serviceability are critical in today's enterprise-class high-performance, high-availability storage systems. Therefore, the requirement for the system to have no single point of failure is inevitable. In traditional storage systems, such as Figure 1a , the server 11 performs data read and write communication with multiple storage disks 31, 41 through the switch 21, but there are many single points of failure in this system. If the server 11 fails or the switch 21 fails or the storage controller in the storage disks 31, 41 or any single storage device failure will result in data inaccessibility, irrecoverable and loss. Figure 1b The system eliminates a single point of failure in servers and switches by adding servers 12 and switches 22, bu...
Claims
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IPC IPC(8): G06F13/16G06F13/42
CPCG06F13/1684G06F13/4247G06F13/42G06F13/16G06F13/4234G06F11/2094G06F11/2092G06F11/0793G06F11/2023
Inventor 许迪杨国华
Owner SUZHOU KUHAN INFORMATION TECH CO LTD