Method and device for controlling hard disk access
A hard disk and array controller technology, applied in the storage field, can solve problems such as array controller reset failure, storage array cannot operate normally, software characteristics cannot meet software characteristics, etc., and achieve the effect of improving accuracy
Active Publication Date: 2020-12-18
HUAWEI TECH CO LTD
View PDF7 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0004] In the hard disk access mechanism described above, only the physical characteristics of the hard disk are used as the condition for judging whether the target hard disk can be connected to the storage array, so that after some hard disks are connected to the storage array, the software characteristics of the hard disk may not meet the requirements of the storage array. The demand for the software features of the hard disk causes the storage array to fail to operate normally, reducing the probability of the hard disk being successfully connected to the storage array
For example, the above target hard disk is a solid state drive (solid state drives, SSD) that supports the Non-Volatile Memory Express (NVMe) version 1.3, but the array controller supports NVMe version 1.2 , at this time, if the physical characteristics of the target hard disk match the physical characteristics of the hard disk supported by the array controller, the array controller allows the target hard disk to access the storage array. However, due to the differences in the reset commands defined in the above two versions of the NVMe specification, The target hard disk cannot recognize the reset command sent by the array controller, which eventually causes the reset of the array controller to fail
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0040] The technical solution in this application will be described below with reference to the accompanying drawings.
[0041] For ease of understanding, first combine figure 1 The architecture of the storage array applicable to the embodiments of the present application is introduced. figure 1 The shown storage array 100 includes an array controller 110 and a plurality of hard disks 120 .
[0042] Multiple hard disks 120 are used to provide storage resources for data.
[0043] The array controller 110 is connected to at least part of the hard disks in the plurality of hard disks, and is used to manage the hard disks connected to the array controller in the storage array.
[0044] For reasons such as capacity expansion or hard disk replacement, you need to connect a new target hard disk to the storage array. For the access process of the traditional target hard disk, please refer to figure 2 . figure 2 The illustrated method includes steps 210 to 240 .
[0045] 210. T...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The present application provides a method and device for controlling hard disk access, the method is executed by an array controller of a storage array, and the method includes: after detecting that a hard disk is connected to the storage array, obtaining a preset The address of the reserved area; obtain the parameters of the hard disk from the reserved area of the hard disk indicated by the address; match the obtained parameters with preset information to obtain a matching result; determine according to the matching result Whether to access the hard disk is beneficial to improve the accuracy of hard disk access to the storage array.
Description
technical field [0001] The present application relates to the field of storage, and more particularly, to a method and device for controlling hard disk access. Background technique [0002] A storage array is a large-capacity hard disk group composed of multiple hard disks to provide data storage space for users. Usually, in order to expand the storage capacity of the storage array, or to replace a hard disk that fails to work normally in the storage array, it is necessary to connect a new hard disk to the storage array. [0003] At present, in the process of hard disk access, the target hard disk to be connected is first connected to the array controller of the storage array. The array controller obtains the physical characteristics of the hard disk such as the sector size and media type of the target hard disk, and then the array controller determines the target hard disk. Whether the hard disk meets the requirements of the storage array for the physical characteristics o...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): G06F13/16
CPCG06F8/71G06F13/1668G06F13/1694
Inventor 蒋朝曲杨明硕刘国霞曹红强
Owner HUAWEI TECH CO LTD