CN1407461A - Disc array controller - Google Patents
Disc array controller Download PDFInfo
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- CN1407461A CN1407461A CN 01131102 CN01131102A CN1407461A CN 1407461 A CN1407461 A CN 1407461A CN 01131102 CN01131102 CN 01131102 CN 01131102 A CN01131102 A CN 01131102A CN 1407461 A CN1407461 A CN 1407461A
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Abstract
Magnet disc matrix controller used for network recording unit consists of a magnetic disc controlling unit, an interface converter and a network interface. The said disc controlling unit has a parallel interface to provide several groups of parallel signals and a common bus interface to receive or to transmit recorded data. The interface converter receives each group of parallel signals and convert them into correspondant differential signals when the disc matrix controller transmits data out. The interface converter does the contray operation when the disc matrix controller receives data.
Description
Technical field
The invention relates to a kind of disk array (disk array) control device, particularly be applicable to the disc array controller of network storage devices.
Background technology
Because the quick growth and the huge data traffic of the thing followed of network, network storage devices safe in utilization, reliable, efficient has become infotech (Information Technology, IT) trend of industry.The network storage devices of this class, network attached storage device (NetworkAttached Storage for example, NAS), storage area network (Storage Area Network, SAN) or many disc drivers array (Redundant Arrays of Independent Disks, RAID) server generally all uses disk array (disk array) equipment with disk tolerance (disk fault tolerance) function.Adopt integrated driving electronics (Integrated Drive Electronics, hereinafter to be referred as IDE) (maybe can be referenced as AT Attachment, hereinafter to be referred as ATA) hard drives of interface is (for simplicity, below all be called for short the IDE/ATA Winchester disk drive), because it has lower-cost advantage, therefore often be utilized to form Disk Array.Yet according to the IDE/ATA standard, the IDE/ATA interface is one 40 signal line and the interface that adopts parallel (parallel) transmission, its long pass send distance that 18 inch are only arranged, like this when using a plurality of IDE/ATA Winchester disk drive as Disk Array, inevasiblely suffer from that online distance is too short, signal wire is too many and cause the distribution difficulty, even problem that can't distribution.
In view of this, the usefulness and the cost advantage of how to possess the IDE/ATA Winchester disk drive, but can reduce the number of interface signal and increase transmitting range, and do not have the distribution of traditional magnetic disk array apparatus to limit, and the stored disk array apparatus can directly be connected to network carry out the remote storage management, be an important topic in fact.
Summary of the invention
In order to overcome the deficiencies in the prior art, the purpose of this invention is to provide a kind of disc array controller, convert the IDE/ATA interface signal to simplify differential (differential) signaling interface, with the number that reduces interface signal and increase transmitting range.
Another object of the present invention provides a kind of disc array controller, and it can reduce the number of interface signal and increase transmitting range, and the function that connects network is provided.
For achieving the above object, the invention provides a kind of disc array controller, comprise a disk array controller, an interface convertor and a network interface unit.Disk array controller has a parallel interface and receives many group parallel signals to pass, and a shared bus interface is stored up the data of depositing with biography.Interface convertor changes the parallel signal of respectively organizing that disk array controller transmits into the corresponding differential wave of respectively organizing, and changes the differential wave of respectively organizing that disc array devices transmits into the corresponding parallel signal of respectively organizing to export above-mentioned parallel interface to.Network interface unit has a network I/O port with external network, this network interface unit couples the shared bus interface of disk array controller, receiving, and receive the remote data of automatic network and be sent to the shared bus interface via the network I/O port from the storing data and be sent to network of shared bus interface via the network I/O port.
Advantage of the present invention is: because the present invention has adopted and converted the IDE/ATA interface signal to simplify differential (differential) signaling interface, therefore, can reduce the number of interface signal and increase transmitting range, and the function that connects network is provided.
Description of drawings
The present invention is described in detail below in conjunction with drawings and Examples:
Fig. 1 is according to network storage devices calcspar of the present invention;
Fig. 2 is an interface convertor calcspar of the present invention;
Fig. 3 is the interface convertor calcspar of the disk array that connects of the present invention;
Fig. 4 is a network interface unit calcspar of the present invention.
Symbol description among the figure:
10 network storage devices, 20 networks
100 disc array controllers, 110 disk array controller
112 IDE/ATA interface 112a-d IDE/ATA signals
114 shared bus interfaces, 116 shared buss
120 interface convertor 122a-d differential waves
130 network interface unit, 132 network I/O ports
140 interface convertor 142a-d IDE/ATA signals
150a-d IDE/ATA Winchester disk drive
160 microcontrollers, 162 control signals
164 control signals, 166 control signals
170 non-voltile memories
180 shared drives
202a-d is parallel/serial signal device for interchanging 204a-d differential wave transceiver
212a-d numeral serial signal
302a-d is parallel/serial signal device for interchanging 304a-d differential wave transceiver
312a-d numeral serial signal
402 media interviews control circuits
404 tangible circuit 412 signal wires
414 signal wires
Embodiment
Fig. 1 is according to network storage devices calcspar of the present invention, and as shown in the figure, network storage devices 10 comprises the disc array devices and relevant interface convertor 140 that disk array controller 110 and a plurality of disk unit 150a～150d are constituted.Disk unit 150a～150d is the IDE/ATA Winchester disk drive, and each IDE/ATA Winchester disk drive 150a～150d respectively provides one group of IDE/ATA interface signal 142a～142d.Disc array controller 100 comprises disk array controller 110, interface conversion 120 and network interface unit 130.In addition, also has a microcontroller (micro-controller) 160 by control signal 162～166 control disk array controller 110, interface convertor 120 and network interface unit 130.Microcontroller 160 is shared bus 116 via one and is read a piece of wood serving as a brake to halt a carriage body program and the data that leave in the non-voltile memory 170, with the work of execution data flow control and storage management, and microcontroller 160, disk array controller 110 and network interface unit 130 are to be temporarily stored in shared drive 180 via shared bus 116 swap datas or with data.Any those skilled in the art are when understanding that microcontroller 160, non-voltile memory 170 or shared drive 180 also can be incorporated in the disk array controller 110, moreover, the mentioned disc array devices that is made of 4 IDE/ATA Winchester disk drive 150a～150d of present embodiment is just to illustrative purposes, and the present invention is applicable to the magnetic disk drive apparatus of arbitrary number.
As shown in Figure 1, disk array controller 110 has one first parallel interface, and promptly the IDE/ATA interface 112, so that 4 group of first parallel signal to be provided, i.e. and IDE/ATA signal 112a～112d, and one share bus interface 114 and store up deposit data with biography.Disk array controller 110 is one can improve disc array devices and export into usefulness and provide data backup and the RAID controller of disk tolerance ability, disk array controller 110 according to the present invention provides 4 kinds of different RAID grades (RAID level): RAID 0, RAID 1, RAID 5 and RAID0+1, and to meet the different needs.RAID 0 is no fault-tolerant cutting apart (stripping) disk array, data are cut apart and is stored in different disk in the disk array respectively, so can increase access speed, but not provide fault-tolerant ability.RAID 1 is disk mirroring backup (disk mirroring), and each disk is all done man-to-man data backup with a disk paired with it.RAID 5 is the independent data disk (independent data disks with distributedparity blocks) of the distributed coordination data of tool, with 4 disks is example, the capacity of each disk 75% is the space of depositing general data, 25% capacity is for depositing Hamming (Hamming) error correction coding (ErrorCorrection Code, ECC) space of coordination data can be corrected by the coordination data when store data is damaged.RAID 0+1 is constituted by the disk mirroring backup array of a RAID 1, the storing mode of cutting apart of adopting RAID 0 of wherein every arrangement of mirrors picture backup array.2 disks of the minimum needs of RAID 0 and RAID1 could realize that 3 of RAID 5 minimum needs, RAID 0+1 then must could be realized by minimum 4 disks.Moreover disk array controller 110 can be supported the data of IDE/ATA standard (ATA-66 and ATA-100) with the DMA pattern access IDE/ATA Winchester disk drive of per second 66 megabyte and per second 100 megabyte.In the present embodiment, 4 IDE/ATA Winchester disk drive of disk array controller 110 access simultaneously 150a～150d, all support the standard of ATA-66 as each IDE/ATA Winchester disk drive 150a～150d, then disk array controller 110 per second throughputs (throughput) can reach 264 megabyte.Any those skilled in the art are when understanding the part IDE/ATA Winchester disk drive of disk array controller 110 in can also 4 IDE/ATA Winchester disk drive of an access.
When the interface convertor 120 of disc array controller 100 transmits data to interface convertor 120 at disk array controller 110, receive 4 groups of IDE/ATA signal 112a～112d of IDE/ATA interface 112, change IDE/ATA signal 112a～112d into corresponding 4 groups of differential wave 122a～122d, and when interface convertor 120 receives data, differential wave 122a～122d is changed into 4 groups of IDE/ATA signal 112a～112d of corresponding IDE/ATA interface 112 at disk array controller 110.Network interface unit 130 has a network I/O port 132 and connects a network 20, network interface unit 130 couples disk array controller 110 via shared bus interface 114, be sent to network 20 to receive from the data of shared bus 116 and via network I/O port 132, and receive the teledata of automatic network 20 and be sent to shared bus 116 via network I/O port 132.When the interface convertor 140 relevant with disc array devices transmits data to interface convertor 140 at IDE/ATA Winchester disk drive 150a～150d, what receive IDE/ATA Winchester disk drive 150a～150d respectively organizes signal 142a～142d, change each group signal 142a～142d into corresponding differential signal 122a～122d independently of one another, and when interface convertor 120 receives data, respectively organize IDE/ATA signal 142a～142d with what differential wave 122a～122d changed corresponding each IDE/ATA Winchester disk drive 150a～150d at interface convertor 140.
Next do more detailed description at interface convertor 120 and interface convertor 140, with reference to figure 2, interface convertor 120 comprises 4 parallel/serial signal device for interchanging 202a～202d and 4 differential wave transceivers (transceiver) 204a～204d.In disk array controller 110 transmission data during to interface convertor 120, what 4 parallel/serial signal device for interchanging 202a～202d received IDE/ATA interface 112 separately respectively organizes IDE/ATA signal 112a～112d, change 4 groups of IDE/ATA signal 112a～112d into corresponding 4 groups of digital serial signal 212a～212d at a high speed independently, 4 differential wave transceiver 204a～204d then organize each digital serial signal 212a～212d and change corresponding 4 groups of differential wave 122a～122d into then.On the other hand, at disk array controller 110 when interface convertor 120 receives data, differential wave transceiver 204a～204d changes each group differential wave 122a～122d into corresponding 4 groups of numeral serial signal 212a～212d, and parallel then/serial signal device for interchanging 202a～202d changes 4 groups of numeral serial signal 212a～212d into 4 groups of IDE/ATA signal 112a～112d of corresponding IDE/ATA interface 112 independently of one another.As shown in Figure 3, interface convertor 140 comprises 4 parallel/serial signal device for interchanging 302a～302d and 4 differential wave transceiver 304a～304d.When IDE/ATA Winchester disk drive 150a～150d transmits data to interface convertor 140,4 groups of IDE/ATA signal 142a～142d that 4 parallel/serial signal device for interchanging 302a～302d will receive change corresponding 4 groups of digital serial signal 312a～312d at a high speed independently of one another into, and 4 differential wave transceiver 304a～304d then organize each digital serial signal 312a～312d and change corresponding 4 groups of differential wave 122a～122d into then.On the other hand, at interface convertor 140 when interface convertor 120 receives data, differential wave transceiver 304a～304d changes each group differential wave 122a～122d into corresponding 4 groups of numeral serial signal 312a～312d, and parallel then/serial signal device for interchanging 302a～302d changes 4 groups of numeral serial signal 312a～312d into corresponding 4 groups of IDE/ATA signal 142a～142d independently of one another.
In the present embodiment, differential wave transceiver 204a～204d and differential wave transceiver 304a～304d are a kind of low-voltage differential signal (Low Voltage Differential Signal, LVDS) transceiver, the differential wave of utilizing the LVDS transceiver to be produced has low noise, low-power, high transfer rate and transmitting range can reach 10 meters advantage, with the signal transition of every group of 40 IDE/ATA parallel transmissions of script is differential wave, even every group of differential wave like this comprises power supply and ground signalling and still can be condensed into the interface of 10 barss, and the degree of difficulty of reduction disk array distribution.
Fig. 4 is the calcspar of the network interface unit 130 of disc array controller 100, wherein (Media Access Control is controlled in media interviews, MAC) circuit 402 is when network storage devices 10 transmits data to network 20, seeing through shared bus 116 will be the data bit flow of following Ethernet (Ethernet) MAC layer (MAC layer) standard from the transformation of data of shared bus interface 114, when network 20 receives data, data bit stream is changed into the data layout of shared bus interface 114 in network storage devices 10.Really 404 in (physical) circuit couples MAC circuit 402 and couples network I/O port 132 via signal wire 414 via signal wire 412, and tangible circuit 404 will be done exchange with the network implementation of the teledata of receiving and dispatching by network I/O port 132 at layer (physical) signal from the data bit flow of MAC circuit 402.By network interface unit 130, network storage devices 10 can directly be connected to network and be carried out the remote storage management.In the present embodiment, network 20 is not limited to any network form, and wired or wireless network is the scope that the present invention implements.
Though the present invention with a specific embodiment openly as above; so it is only in order to be easy to illustrate technology contents of the present invention; and be not with narrow sense of the present invention be defined in this embodiment; any those skilled in the art; without departing from the spirit and scope of the present invention; do to change with retouching when being contained by the present invention, so protection scope of the present invention with claim and in conjunction with instructions and accompanying drawing the person of being defined be as the criterion.
Claims (15)
1. disc array controller comprises:
One disk array controller has a parallel interface and shares bus interface to pass receipts one storage data to pass receipts many groups parallel signals and;
One interface convertor, above-mentioned many group parallel signals that above-mentioned disk array controller is transmitted change corresponding many group differential waves into, and change many groups differential wave that the outside is transmitted into corresponding many group parallel signals to export above-mentioned parallel interface to; And
One network interface unit, has a network I/O port with an external network, above-mentioned network interface unit is coupled to the above-mentioned shared bus interface of above-mentioned disk array controller, be sent to above-mentioned network to receive from the storage data of above-mentioned shared bus interface and via above-mentioned network I/O port, and receive from a teledata of above-mentioned network and be sent to above-mentioned shared bus interface via above-mentioned network I/O port.
2. according to the described disc array controller of claim 1, it is characterized in that: above-mentioned interface convertor comprises:
A plurality of parallel/the serial signal device for interchanging, be used for when above-mentioned disk array controller transmits data to above-mentioned interface convertor, receive above-mentioned many group parallel signals of above-mentioned parallel interface, change above-mentioned many group parallel signals into corresponding many groups digital serial signal independently of one another, and when above-mentioned interface convertor receives data, the digital serial signal of above-mentioned many groups is changed independently of one another into above-mentioned many group parallel signals of corresponding above-mentioned parallel interface at above-mentioned disk array controller; And
A plurality of differential wave transceivers, be used for when above-mentioned disk array controller transmits data to above-mentioned interface convertor, with the digital serial signal transition of above-mentioned many groups is corresponding above-mentioned many group differential waves, and when above-mentioned interface convertor receives data, change above-mentioned many group differential waves into the corresponding above-mentioned digital serial signals of organizing at above-mentioned disk array controller more.
3. according to the described disc array controller of claim 2, it is characterized in that: above-mentioned differential wave transceiver is the low-voltage differential signal transceiver.
4. according to the described disc array controller of claim 1, it is characterized in that: above-mentioned disk array controller is a RAID controller, so that the function of the disk tolerance more than at least two kinds of grades to be provided.
5. according to the described disc array controller of claim 1, it is characterized in that: above-mentioned first parallel interface meets the IDE/ATA standard.
6. according to the described disc array controller of claim 1, it is characterized in that: above-mentioned network interface unit comprises:
One media interviews control circuit, be used for when above-mentioned disc array controller transmits data to above-mentioned network, to change a data bit flow of following Ethernet MAC layer standard from the above-mentioned storage data of above-mentioned shared bus interface into, when above-mentioned network receives data, above-mentioned data bit stream is changed into a data layout of above-mentioned shared bus interface at above-mentioned disc array controller; And
One tangible circuit, be used for from the above-mentioned data bit flow of above-mentioned media interviews control circuit with do exchange from the network implementation of above-mentioned teledata at layer signal.
7. network storage devices comprises:
A plurality of disk units, each disk unit provide one group of disk interface signal;
One disk array controller has one first parallel interface and shares bus interface to pass receipts one storage data to pass receipts many groups first parallel signals and;
One first interface convertor, above-mentioned many group first parallel signals that above-mentioned disk array controller is transmitted change the output of corresponding many group differential waves into, and change many groups differential wave that above-mentioned first interface convertor receives into corresponding many group first parallel signals to export above-mentioned first parallel interface to;
One second interface convertor, change the disk interface signal of above-mentioned each disk unit into many groups differential wave that corresponding above-mentioned first interface convertor receives independently of one another, and change many groups differential wave of above-mentioned first interface convertor output into corresponding many group disk interface signals to export above-mentioned each disk unit to; And
One network interface unit, has a network I/O port with an external network, above-mentioned network interface unit is coupled to the above-mentioned shared bus interface of above-mentioned disk array controller, be sent to above-mentioned network to receive from the above-mentioned storage data of above-mentioned shared bus interface and via above-mentioned network I/O port, and receive from a teledata of above-mentioned network and be sent to above-mentioned shared bus interface via above-mentioned network I/O port.
8. according to the described network storage devices of claim 7, it is characterized in that: above-mentioned first interface convertor comprises:
A plurality of first parallel/serial signal device for interchanging, be used for when above-mentioned disk array controller transmits data to above-mentioned first interface convertor, receive above-mentioned many group first parallel signals of above-mentioned first parallel interface, change above-mentioned many group first parallel signals into corresponding many group first digital serial signals independently of one another, and when above-mentioned first interface convertor receives data, above-mentioned many group first digital serial signals are changed independently of one another into above-mentioned many group first parallel signals of corresponding above-mentioned first parallel interface at above-mentioned disk array controller; And
A plurality of first differential wave transceivers, be used for when above-mentioned disk array controller transmits data to above-mentioned first interface convertor, with above-mentioned many group first digital serial signal transition is corresponding above-mentioned many group differential waves, and when above-mentioned first interface convertor receives data, change above-mentioned many group differential waves into the corresponding above-mentioned first digital serial signals of organizing at above-mentioned disk array controller more.
9. described according to Claim 8 network storage devices is characterized in that: above-mentioned second interface convertor comprises:
A plurality of second parallel/serial signal device for interchanging, be used for when above-mentioned a plurality of disk units transmit data to above-mentioned second interface convertor, receive the disk interface signal of above-mentioned each disk unit, change the disk interface signal of above-mentioned each disk unit into corresponding many group second digital serial signals independently of one another, and when above-mentioned first interface convertor receives data, above-mentioned many group second digital serial signals are changed independently of one another into the disk interface signals of corresponding above-mentioned each disk unit at above-mentioned second interface convertor; And
A plurality of second differential wave transceivers, be used for when above-mentioned a plurality of disk units transmit data to above-mentioned second interface convertor, with above-mentioned many group second digital serial signal transition is corresponding above-mentioned many group differential waves, and when above-mentioned first interface convertor receives data, change above-mentioned many group differential waves into the corresponding above-mentioned second digital serial signals of organizing at above-mentioned second interface convertor more.
10. according to the described network storage devices of claim 9, it is characterized in that: above-mentioned a plurality of first and above-mentioned a plurality of second differential wave transceiver be the low-voltage differential signal transceiver.
11. according to the described network storage devices of claim 7, it is characterized in that: above-mentioned disk array controller is a RAID controller, so that the function of the disk tolerance more than at least two kinds of grades to be provided.
12. according to the described network storage devices of claim 7, it is characterized in that: above-mentioned first parallel interface meets the IDE/ATA standard.
13. according to the described network storage devices of claim 12, it is characterized in that: above-mentioned second parallel interface meets the IDE/ATA standard.
14. according to claim 13 a described network storage devices, it is characterized in that: above-mentioned disk interface signal meets the IDE/ATA standard.
15. according to the described network storage devices of claim 7, it is characterized in that: above-mentioned network interface unit comprises:
One media interviews control circuit, be used for when above-mentioned network storage devices transmits data to above-mentioned network, to change a data bit flow of following Ethernet MAC layer standard from the above-mentioned storage data of above-mentioned shared bus interface into, when above-mentioned network receives data, above-mentioned data bit stream is changed into a data layout of above-mentioned shared bus interface in above-mentioned network storage devices; And
One tangible circuit, be used for from the above-mentioned data bit flow of above-mentioned media interviews control circuit with do exchange from the network implementation of above-mentioned teledata at layer signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011311029A CN1179279C (en) | 2001-08-30 | 2001-08-30 | Disc array controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011311029A CN1179279C (en) | 2001-08-30 | 2001-08-30 | Disc array controller |
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| Publication Number | Publication Date |
|---|---|
| CN1407461A true CN1407461A (en) | 2003-04-02 |
| CN1179279C CN1179279C (en) | 2004-12-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB011311029A Expired - Fee Related CN1179279C (en) | 2001-08-30 | 2001-08-30 | Disc array controller |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1315056C (en) * | 2004-03-25 | 2007-05-09 | 株式会社日立制作所 | Storage system |
| CN100351766C (en) * | 2004-04-21 | 2007-11-28 | 华为技术有限公司 | Disk array system |
| CN100462935C (en) * | 2005-11-17 | 2009-02-18 | 鸿富锦精密工业（深圳）有限公司 | Testing system and method of link control card |
| CN101135950B (en) * | 2006-08-28 | 2011-08-17 | 梁国恩 | Magnetic disc adaptation card |
| CN101719051B (en) * | 2009-11-09 | 2012-06-13 | 中兴通讯股份有限公司 | Multi-control disk array and implementation method thereof |
| CN103729147A (en) * | 2013-12-30 | 2014-04-16 | 华澜微电子有限公司 | Redundant array of independent module |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1329809C (en) * | 2005-10-25 | 2007-08-01 | 威盛电子股份有限公司 | Controller of magnetic disk array and its working method |
-
2001
- 2001-08-30 CN CNB011311029A patent/CN1179279C/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1315056C (en) * | 2004-03-25 | 2007-05-09 | 株式会社日立制作所 | Storage system |
| CN100351766C (en) * | 2004-04-21 | 2007-11-28 | 华为技术有限公司 | Disk array system |
| CN100462935C (en) * | 2005-11-17 | 2009-02-18 | 鸿富锦精密工业（深圳）有限公司 | Testing system and method of link control card |
| CN101135950B (en) * | 2006-08-28 | 2011-08-17 | 梁国恩 | Magnetic disc adaptation card |
| CN101719051B (en) * | 2009-11-09 | 2012-06-13 | 中兴通讯股份有限公司 | Multi-control disk array and implementation method thereof |
| CN103729147A (en) * | 2013-12-30 | 2014-04-16 | 华澜微电子有限公司 | Redundant array of independent module |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1179279C (en) | 2004-12-08 |
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