A method, device, host device and storage device for storing data
A storage device and host device technology, applied in the computer field, can solve problems such as untimely or untimely, disaster, and inability to store data
Active Publication Date: 2020-02-14
HUAWEI TECH CO LTD
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[0005] However, in this type of system, multiple devices that can store multiple copies are usually required to have similar write performance. The data storage completion report will not be sent to the host device in time or will not be sent, and the host device will not send the next write request, so that other devices that complete the data storage in time cannot perform the next data storage
[0006] Therefore, in a multi-copy synchronization system, a long write request response delay of a single copy will lead to a write request response delay of the entire system, especially for systems sensitive to write requests, which will have disastrous consequences
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[0042] figure 1 is a schematic diagram of a data storage system suitable for use in embodiments of the present invention. The data storage system includes at least one host device and at least two storage devices, each host device can communicate with each of the two storage devices, and each storage device can also communicate with each other. By way of example and not limitation, figure 1 Two host devices (i.e., host device 1 and host device 2) and five storage devices (i.e., storage device 1 - storage device 5) are shown, and both host device 1 and host device 2 can communicate with the five storage devices respectively. Communication is performed, and communication between each storage device is also possible.
[0043] As an example and not a limitation, the host device in the embodiment of the present invention may be a personal computer, an application server, etc. capable of generating data, and the storage device may be any device that can be used to store data, for ...
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An embodiment of the invention provides a data storage method and a data storage device. The data storage method includes: the mainframe equipment determines at least one first storage device and at least one second storage device from at least two storage devices, wherein each first storage device is a storage device, in a sub-healthy state in first business storage, in the at least two storage devices, and each second storage device is a storage device, in a healthy state in first business storage, in the at least two storage devices; the mainframe equipment stores the second data in a first business into the at least one second storage device and determines completion of storage aiming at second data after first indication information sent by the at least one second storage device is received and before second indication information sent by the at least one first storage device is received. Therefore, influences on a whole synchronous system due to long response time delay generated in first business data storage in part of the storage devices can be effectively reduced, and response time delay of the system is optimized.
Description
technical field [0001] Embodiments of the present invention relate to the field of computers, and more specifically, to a method and device for storing data, a host device, and a storage device. Background technique [0002] With the rapid development of computer technology, each enterprise is using a large number of computers to process its own core data. The downtime or failure of the computer system that relies on these data will often cause the suspension of production and operation activities of the enterprise, causing huge losses to the enterprise. [0003] In order to effectively protect data and systems, the existing technology adopts multi-copy disaster recovery technology or double-copy disaster recovery technology, for example, high-availability technology based on dual machines, active-active technology of disk array system, remote replication technology, Mirror technology, etc. [0004] Taking the multi-copy synchronization system as an example, the application...
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IPC IPC(8): G06F3/06
CPCG06F3/0611G06F3/0655G06F3/0683
Inventor 熊鹏杨幸坤曾敬勇饶成莉
Owner HUAWEI TECH CO LTD