CN101576806B - Device capable of improving performance of disk arrays - Google Patents
Device capable of improving performance of disk arrays Download PDFInfo
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- CN101576806B CN101576806B CN2009100161572A CN200910016157A CN101576806B CN 101576806 B CN101576806 B CN 101576806B CN 2009100161572 A CN2009100161572 A CN 2009100161572A CN 200910016157 A CN200910016157 A CN 200910016157A CN 101576806 B CN101576806 B CN 101576806B
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Abstract
The invention discloses a device capable of improving the performance of disk arrays and belongs to the technical field of improvement in the performance of the disk arrays. The structure of the device comprises a host interface, an RAID controller I, an RAID controller II, a disk controller and the disk arrays, wherein the host interface is connected with the RAID controller I by a high-speed PCIE bus directly or by optical fibers, Ethernet, SAS from the Internet; the RAID controller I and the RAID controller II as well as the RAID controller II and the disk controller are connected by a high-speed PCIE bus; and the disk controller is connected with the disk arrays through a data wire. Compared with a method for improving the performance of the disk arrays by using isolated controllers inthe prior art, the device capable of improving the performance of the disk arrays performs double controller parallel processing by using the respective independent DMA accesses of the two controllers, thereby greatly improving the whole performance of the disk arrays.
Description
Technical field
The present invention relates to a kind of field of improving the performance of disk arrays technology, specifically a kind of device that improves performance of disk arrays.
Background technology
In current cybertimes, memory technology is had a revolutionary change.Cause the reason of this revolutionary variation at first to show the rapid expansion of memory capacity.Digitizing and the Internet era, the widespread deployment of large-scale application system has proposed huge challenge to the performance and the function of network store system, but mainly shows as high-performance, extensibility sharing, adaptivity, manageability, and high reliability.
IT field increasing along with data-storage applications, the demand of large-capacity and high-performance Disk Array also increases rapidly.But the lifting of Disk Array performance lags far behind the increase of disk size.Stepping into the memory device at computer application field nowadays is that the performance that how to improve disk array becomes particularly important under the overall background in storage epoch of core.
Summary of the invention
Technical assignment of the present invention provides a kind of device that improves performance of disk arrays that a kind of many RAID of utilization controller DMA passage realizes that disk array quickens.
Technical assignment of the present invention realizes that in the following manner described device comprises host interface, RAID controller I, RAID controller II, Magnetic Disk Controller and disk array; Directly link to each other by high-speed PCI E bus between host interface and the RAID controller I or connect from the internet by optical fiber, Ethernet, SAS, all link to each other by high-speed PCI E bus between RAID controller I and the RAID controller II and between RAID controller II and the Magnetic Disk Controller, Magnetic Disk Controller connects disk array by data line;
The flow process that data write disk array is:
(1), data stream S1, the S2 from main frame at first enters into RAID controller I by host interface, this RAID controller I is responsible for a part of data stream S1 is carried out follow-up RAID data processing by its DMA channel transfer in self SDRAM, also remainder data is flowed S2 simultaneously and be sent to RAID controller II by high-speed PCI E bus, RAID controller II carries out follow-up RAID data processing by its DMA channel transfer with this part data stream S2 in self SDRAM;
(2), RAID controller I carries out the RAID computing with data stream S1 and obtains RAID data S3 after intact, RAID controller II carries out the RAID computing to data stream S2 and obtains RAID data S4 after intact;
(3), RAID controller I is delivered to RAID controller II by high-speed PCI E bus with RAID data S3, RAID controller II is delivered to the disk operating that Magnetic Disk Controller carries out data with RAID data S3, RAID data S4 by high-speed PCI E bus, forms RAID data S5;
(4), Magnetic Disk Controller is written to RAID data S5 in the disk array by the DMA passage of self;
From the flow process of disk array reading of data be:
(1), Magnetic Disk Controller is by the RAID data S5 in self the DMA passage reading disk array, and RAID data S5 is divided into RAID data S3 and RAID data S4;
(2), Magnetic Disk Controller arrives RAID controller II with RAID data S3 and RAID data S4 by high-speed PCI E bus transfer, RAID controller II is responsible for RAID data S4 is transferred among self SDRAM and handles, be treated to RAID data stream S2, also RAID data S3 is sent to RAID controller I by high-speed PCI E bus simultaneously, RAID controller I is transferred to RAID data S3 among self SDRAM and handles, and is treated as RAID data stream S1;
(3), the data stream S2 that obtain after will handling of RAID controller II is sent among the RAID controller I by high-speed PCI E bus by self DMA passage again; RAID controller I is transferred to host interface with RAID data stream S1, RAID data stream S2.
RAID controller I is identical with RAID controller II structure, includes DMA passage and SDRAM.
A kind of device that improves performance of disk arrays of the present invention by dual controller DMA passage independently separately, thereby carries out the complete machine performance that the dual controller parallel processing improves disk array greatly; Thereby, have good value for applications.
Description of drawings
The present invention is further described below in conjunction with accompanying drawing.
Process flow diagram when accompanying drawing 1 writes disk array for a kind of device data that improve performance of disk arrays;
Accompanying drawing 2 is a kind of process flow diagram that improves the device of performance of disk arrays from the disk array reading of data.
Embodiment
Explain below with reference to Figure of description and specific embodiment a kind of device that improves performance of disk arrays of the present invention being done.
Embodiment 1:
Below in conjunction with 1 pair of a kind of device that improves performance of disk arrays of the present invention of accompanying drawing, the process that data write disk array elaborates.
A kind of device that improves performance of disk arrays of the present invention, its described device comprise host interface, RAID controller I, RAID controller II, Magnetic Disk Controller and disk array; Directly link to each other by high-speed PCI E bus between host interface and the RAID controller I or connect from the internet by optical fiber, Ethernet, SAS, all link to each other by high-speed PCI E bus between RAID controller I and the RAID controller II and between RAID controller II and the Magnetic Disk Controller, Magnetic Disk Controller connects disk array by data line.
RAID controller I is identical with RAID controller II structure, includes DMA passage and SDRAM.
The flow process that data write disk array is:
(1), data stream S1, the S2 from main frame at first enters into RAID controller I by host interface, this RAID controller I is responsible for a part of data stream S1 is carried out follow-up RAID data processing by its DMA channel transfer in self SDRAM, also remainder data is flowed S2 simultaneously and be sent to RAID controller II by high-speed PCI E bus, RAID controller II carries out follow-up RAID data processing by its DMA channel transfer with this part data stream S2 in self SDRAM;
(2), RAID controller I carries out the RAID computing with data stream S1 and obtains RAID data S3 after intact, RAID controller II carries out the RAID computing to data stream S2 and obtains RAID data S4 after intact;
(3), RAID controller I is delivered to RAID controller II by high-speed PCI E bus with RAID data S3, RAID controller II is delivered to the disk operating that Magnetic Disk Controller carries out data with RAID data S3, RAID data S4 by high-speed PCI E bus, forms RAID data S5;
(4), Magnetic Disk Controller is written to RAID data S5 in the disk array by the DMA passage of self.
Embodiment 2:
Below in conjunction with 2 pairs of a kind of devices that improve performance of disk arrays of the present invention of accompanying drawing, elaborate from the process of disk array reading of data.
A kind of device that improves performance of disk arrays of the present invention, its described device comprise host interface, RAID controller I, RAID controller II, Magnetic Disk Controller and disk array; Directly link to each other by high-speed PCI E bus between host interface and the RAID controller I or connect from the internet by optical fiber, Ethernet, SAS, all link to each other by high-speed PCI E bus between RAID controller I and the RAID controller II and between RAID controller II and the Magnetic Disk Controller, Magnetic Disk Controller connects disk array by data line.
RAID controller I is identical with RAID controller II structure, includes DMA passage and SDRAM.
From the flow process of disk array reading of data be:
(1), Magnetic Disk Controller is by the RAID data S5 in self the DMA passage reading disk array, and RAID data S5 is divided into RAID data S3 and RAID data S4;
(2), Magnetic Disk Controller arrives RAID controller II with RAID data S3 and RAID data S4 by high-speed PCI E bus transfer, RAID controller II is responsible for RAID data S4 is transferred among self SDRAM and handles, be treated to RAID data stream S2, also RAID data S3 is sent to RAID controller I by high-speed PCI E bus simultaneously, RAID controller I is transferred to RAID data S3 among self SDRAM and handles, and is treated as RAID data stream S1;
(3), the data stream S2 that obtain after will handling of RAID controller II is sent among the RAID controller I by high-speed PCI E bus by self DMA passage again; RAID controller I is transferred to host interface with RAID data stream S1, RAID data stream S2.
Except that the described technical characterictic of instructions, be the known technology of those skilled in the art.
Claims (2)
1. the device that can improve performance of disk arrays is characterized in that described device comprises host interface, RAID controller I, RAID controller II, Magnetic Disk Controller and disk array; Directly link to each other by high-speed PCI E bus between host interface and the RAID controller I or connect from the internet by optical fiber, Ethernet, SAS, all link to each other by high-speed PCI E bus between RAID controller I and the RAID controller II and between RAID controller II and the Magnetic Disk Controller, Magnetic Disk Controller connects disk array by data line;
The flow process that data write disk array is:
(1), data stream S1, the S2 from main frame at first enters into RAID controller I by host interface, this RAID controller I is responsible for a part of data stream S1 is carried out follow-up RAID data processing by its DMA channel transfer in self SDRAM, also remainder data is flowed S2 simultaneously and be sent to RAID controller II by high-speed PCI E bus, RAID controller II carries out follow-up RAID data processing by its DMA channel transfer with this part data stream S2 in self SDRAM;
(2), RAID controller I carries out the RAID computing with data stream S1 and obtains RAID data S3 after intact, RAID controller II carries out the RAID computing to data stream S2 and obtains RAID data S4 after intact;
(3), RAID controller I is delivered to RAID controller II by high-speed PCI E bus with RAID data S3, RAID controller II is delivered to the disk operating that Magnetic Disk Controller carries out data with RAID data S3, RAID data S4 by high-speed PCI E bus, forms RAID data S5;
(4), Magnetic Disk Controller is written to RAID data S5 in the disk array by the DMA passage of self;
From the flow process of disk array reading of data be:
(1), Magnetic Disk Controller is by the RAID data S5 in self the DMA passage reading disk array, and RAID data S5 is divided into RAID data S3 and RAID data S4;
(2), Magnetic Disk Controller arrives RAID controller II with RAID data S3 and RAID data S4 by high-speed PCI E bus transfer, RAID controller II is responsible for RAID data S4 is transferred among self SDRAM and handles, be treated to RAID data stream S2, also RAID data S3 is sent to RAID controller I by high-speed PCI E bus simultaneously, RAID controller I is transferred to RAID data S3 among self SDRAM and handles, and is treated as RAID data stream S1;
(3), the data stream S2 that obtain after will handling of RAID controller II is sent among the RAID controller I by high-speed PCI E bus by self DMA passage again; RAID controller I is transferred to host interface with RAID data stream S1, RAID data stream S2.
2. a kind of device that improves performance of disk arrays according to claim 1 is characterized in that RAID controller I is identical with RAID controller II structure, includes DMA passage and SDRAM.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100161572A CN101576806B (en) | 2009-06-12 | 2009-06-12 | Device capable of improving performance of disk arrays |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100161572A CN101576806B (en) | 2009-06-12 | 2009-06-12 | Device capable of improving performance of disk arrays |
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| Publication Number | Publication Date |
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| CN101576806A CN101576806A (en) | 2009-11-11 |
| CN101576806B true CN101576806B (en) | 2011-02-02 |
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| CN2009100161572A Expired - Fee Related CN101576806B (en) | 2009-06-12 | 2009-06-12 | Device capable of improving performance of disk arrays |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102629225B (en) | 2011-12-31 | 2014-05-07 | 华为技术有限公司 | Dual-controller disk array, storage system and data storage path switching method |
| CN109446169B (en) * | 2018-10-22 | 2022-02-15 | 北京计算机技术及应用研究所 | Double-control disk array shared file system |
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