CN1423179A - Fault-tolerant data transmission interface device - Google Patents
Fault-tolerant data transmission interface device Download PDFInfo
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- CN1423179A CN1423179A CN 01139892 CN01139892A CN1423179A CN 1423179 A CN1423179 A CN 1423179A CN 01139892 CN01139892 CN 01139892 CN 01139892 A CN01139892 A CN 01139892A CN 1423179 A CN1423179 A CN 1423179A
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Abstract
The characteristics of the fault tolerant typed data transmission interface device are that the interface comprises at least two interface circuits including the main control interface circuit and the standing by interface circuit. If the fault condition occurs in the main control interface circuit, then the standing by interface circuit takes the function of the interface immediately. Thus, the server still can read the data in the hard disk array system so as not to affect the operation of the network system caused by the fault of the interface circuit. The invented interface device is suitable to the host of the computer such as in the networked server for coupling the host to a peripheral device for example a hard disk array system.
Description
Technical field
The present invention relates to a kind of computer hardware technology, particularly relevant for a kind of fault-tolerant data transmission interface device, it can for example be applicable in the main frame, for example be in the webserver, in order to the main frame lotus root is connected to a peripheral unit, for example be an array formula hard-disk system, can pass data mutually between this webserver and this array hard-disk system to allow; And when portion's circuit has any one part to break down situation, still can normally provide its data-transformation facility within it.
Background technology
Array hard-disk system technology can be integrated into the single hardware system with array way with a plurality of hard disk units, in order to the storage volume of several times to be provided, and can any one hard disk unit breaks down situation therein the time, still can normally provide its data access function.Redundant Array of Independent Disks (RAID) (Redundant Array of Independent Disks, RAID) be a kind of standard criterion commonly used in the array hard-disk system technology, it is widely used in the webserver, in order to the large-capacity data storage area to be provided.Because RAID is the standard criterion that the computerized information industry is used always and known, therefore in this instructions, will its content be described in further detail.
The array hard-disk system mostly adopts SCSI (the Small Computer SystemInterface) bus of standard as data line, and present server host then mostly adopts PCI (the Peripheral Component Interconnect) bus of standard as data line; Therefore server host must just can be connected to the array hard-disk system by a PCI-SCSI interface circuit.
Yet in practical application, if above-mentioned PCI-SCSI interface circuit is when breaking down situation, just will cause whole array hard-disk system can't carry out data access operation, thereby make server host that normal data, services function can't be provided and have influence on the operation of whole network system.Though this fault state can be got rid of via maintenance job, obviously will cause great inconvenience to vast network user in this maintenance period.
Summary of the invention
The shortcoming of prior art in view of the above, fundamental purpose of the present invention is to provide a kind of fault-tolerant data transmission interface device, wherein have at least two interface circuits, the interface circuit and the standby interface circuit that comprise a master control, in the time of can breaking down situation at the interface circuit of master control, replace its data transmission interface function with standby interface circuit immediately, make server host still can normally read the data in the array hard-disk system.
In the broadest sense, fault-tolerant data transmission interface device of the present invention between one first system and one second system, this first system and this second system between mutually passes data in order to allow applicable to collocation; And this first system has one first type bus, and this second system then has one second type bus.Fault-tolerant data transmission interface device of the present invention comprises at least with lower member: (a) one first interface circuit, and it has, and end is gone in one first output and end is gone in one second output; Wherein first output is gone into end and is connected to this first type bus, second output is gone into end and then is connected to this second type bus, in order to the data on this first type bus are sent to this second type bus, and also the data on this second type bus are sent to this first type bus; (b) one second interface circuit, it has, and end is gone in one first output and end is gone in one second output; Wherein first output is gone into end and is connected to this first type bus, second output is gone into end and then is connected to this second type bus, in order to the data on this first type bus are sent to this second type bus, and also the data on this second type bus are sent to this first type bus; And (c) prosecution module, whether normally it is connected to this second type bus, detect the operation of this first interface circuit sustainably; If not, then send a standby enable signal, in order to this second interface circuit of activation.
When practical application, the first above-mentioned system can be a server for example, and the first type bus is a pci bus; And second system can for example be an array formula hard-disk system, and the second type bus then is a SCSI bus.
The characteristics of fault-tolerant data transmission interface device of the present invention are wherein to be provided with at least two interface circuits, the interface circuit and the standby interface circuit that comprise a master control, in the time of can breaking down situation at the interface circuit of master control, replace its data transmission interface function with standby interface circuit immediately, make server host still can normally read the data in the array hard-disk system, can can't not provide normal data, services function to have influence on the operation of whole network system because of the interface circuit situation of breaking down causes server host.
Description of drawings
Essence technology contents of the present invention and embodiment are drawn in this Figure of description in detail with graphic mode.The content Description of these a little accompanying drawings is as follows:
Fig. 1 is a system architecture synoptic diagram, wherein shows the basic system architecture of fault-tolerant data transmission interface device of the present invention;
Fig. 2 is a process flow diagram, wherein shows the operational scheme step of fault-tolerant data transmission interface device of the present invention.
Symbol description among the figure:
10 server hosts
11 pci buss
20 array hard-disk systems
21 SCSI bus
30 end devices
100 fault-tolerant data transmission interface devices of the present invention
110 the one PCI-SCSI interface circuits
120 the 2nd PCI-SCSI interface circuits
130 prosecution modules
The ALERT alarm signal
Embodiment
Below promptly cooperate Fig. 1 and Fig. 2, describe an embodiment of fault-tolerant data transmission interface device of the present invention in detail.
Please at first consult Fig. 1, fault-tolerant data transmission interface device of the present invention is the part that frame of broken lines comprised of label 100 indications, it is connected between a main frame and the peripheral unit applicable to lotus root, for example be between a server host 10 and an array formula hard-disk system 20, in order to allow this server host 10 read data in the array hard-disk system 20 by fault-tolerant data transmission interface device 100 of the present invention.Server host 10 has a pci bus 11, and array hard-disk system 20 then has a SCSI bus 21.
Fault-tolerant data transmission interface device 100 of the present invention comprises at least with lower member: (a) one the one PCI-SCSI interface circuit 110; (b) one the 2nd PCI-SCSI interface circuit 120; And (c) prosecution module 130.
The one PCI-SCSI interface circuit 110 has one first output and goes into to hold 110a and one second output to go into to hold 110b; Wherein first output goes into to hold 110a to be connected to the pci bus 11 of server host 10, second output goes into to hold 110b then to be connected to the SCSI bus 21 of array hard-disk system 20, in order to the data on the pci bus 11 are sent to SCSI bus 21, or the data on the SCSI bus 21 are sent to pci bus 11.
The function of the 2nd PCI-SCSI interface circuit 120 is fully identical with a PCI-SCSI interface circuit 110, and it also has one first output and goes into to hold 120a and one second output to go into to hold 120b; Wherein first output pci bus 11, the second output of going into to hold 120a to be connected to server host 10 goes into to hold 110b then to be connected to the SCSI bus 21 of array hard-disk system 20.
In this embodiment, be with the interface circuit of a PCI-SCSI interface circuit 110 as master control, and with the 2nd PCI-SCSI interface circuit 120 as standby interface circuit; That is during initial setting, a PCI-SCSI interface circuit 110 is set at enabled status, and the 2nd PCI-SCSI interface circuit 120 is set at closed condition.The 2nd standby PCI-SCSI interface circuit 120 is designed to especially and can be set to closed condition automatically when lotus root is connected to the connector (not shown) of SCSI bus 21.
Prosecution module 130 lotus roots are connected to pci bus 11, and it comprises enable signal line (IDSEL1, IDSEL2); Wherein IDSEL1 and IDSEL2 are the some of PCU BUS, and in order to set activation the one PCI-SCSI interface circuit 110, IDSEL2 is then in order to activation and the 2nd PCI-SCSI interface circuit 120.Whether normally when practical operation, prosecution module 130 is at first at sending control command by IDSEL1 with a PCI-SCSI interface circuit 110 and data access is set enabled status for, and continue to detect a PCI-SCSI interface circuit 110 operation; If not, then change by IDSEL2 sends control command with the 2nd PCI-SCSI interface circuit 120 and data access is set enabled status for to sending, and produce an alarm signal ALERT simultaneously to server host 10, make server host 10 spread out of alarm signal ALERT to an end device 30 (a for example computer installation), make the user who is positioned at this end device 30 learn that a PCI-SCSI interface circuit 110 operations are improper.In the specific implementation, this prosecution module 130 can directly adopt the central processing unit of server host 10 to carry out a specific control program, or adopts the control circuit of a specific customization.
The process flow diagram of Fig. 2 promptly shows the operational scheme step of fault-tolerant data transmission interface device of the present invention.
Please consult Fig. 2 and Fig. 1 simultaneously, when server host 10 initial activations, at first make prosecution module 130 execution in step S1, that is come activation the one PCI-SCSI interface circuit 110 to send control command and data access at sending IDSEL1.Because this moment, the 2nd PCI-SCSI interface circuit 120 was configured to closed condition (not giving an order or data access at this interface circuit), therefore a PCI-SCSI interface circuit 110 is just as the interface circuit of master control, and the 2nd PCI-SCSI interface circuit 120 is then as standby interface circuit.
Then whether execution in step S2 normally moves even also prosecution module 130, detects a PCI-SCSI interface circuit 110 constantly at server host 10 run durations.If then continue execution in step S2; If not, then carry out next procedure S3.
In step S3, make prosecution module 130 come activation the 2nd PCI-SCSI interface circuit 120 to send control command and data access, and a PCI-SCSI interface circuit 110 is set for closed condition (not giving an order or data access) simultaneously at this interface circuit at sending IDSEL2; Even also the one or two PCI-SCSI interface circuit 120 replaces the interface circuit that a PCI-SCSI interface circuit 110 is used as master control immediately, in order to continue that pci bus 11 is connected to SCSI bus 21, make the accessing operation of 10 pairs of array hard-disk systems 20 of server host can not interrupt because of a PCI-SCSI interface circuit 110 situations of breaking down.
Then execution in step S4 comes the informing network system manager to carry out necessary maintenance job even also prosecution module 130 is sent an alarm signal ALERT, that is changes or repair a PCI-SCSI interface circuit 110 of fault;
Then execution in step S5 after maintenance job is finished, transforms a PCI-SCSI interface circuit 110 of the former master control after repairing into and is standby interface circuit.
Then program is jumped and to detect the 2nd PCI-SCSI interface circuit 120 that transforms into to master control constantly and whether normally to move to step S2; When also transforming the 2nd PCI-SCSI interface circuit 120 for master control even thereafter into and breaking down situation, an available PCI-SCSI interface circuit 110 is used as spare part.
Therefore above-mentioned step S2 to S5 is carried out repeatedly constantly, can make the accessing operation of 10 pairs of array hard-disk systems 20 of server host can not interrupt because of the interface circuit situation of breaking down is arranged.
Combine it, the invention provides a kind of fault-tolerant data transmission interface device of novelty, its characteristics are wherein to be provided with at least two interface circuits, the interface circuit and the standby interface circuit that comprise a master control, in the time of can breaking down situation at the interface circuit of master control, replace its data transmission interface function with standby interface circuit immediately, make server host still can normally read the data in the array hard-disk system, can not cause server host to carry out the operation that accessing operation has influence on whole network system because of the interface circuit situation of breaking down is arranged to the array hard-disk system.The present invention obviously has better creativeness and practicality than prior art.
The above is preferred embodiment of the present invention only, is not in order to limit the scope of essence technology contents of the present invention.Essence technology contents of the present invention broadly is defined in claims.Any technology entity or method that other people are finished if be identical or be a kind of change of equivalence with the definien of claims institute, all will be regarded as being covered by among this patent scope.
Claims (6)
1. fault-tolerant data transmission interface device, it is connected between one first system and one second system applicable to lotus root, and this first system has one first type bus, and this second system then has one second type bus, passes data between this first system and this second system mutually in order to allow;
This fault-tolerant data transmission interface device comprises at least with lower member:
(a) one first interface circuit, it is as the interface circuit of master control, and it has, and end is gone in one first output and end is gone in one second output; Wherein first output is gone into end and is connected to this first type bus, second output is gone into end and then is connected to this second type bus, in order to the data on this first type bus are sent to this second type bus, and also the data on this second type bus are sent to this first type bus;
(b) one second interface circuit, it is as standby interface circuit, and it has, and end is gone in one first output and end is gone in one second output; Wherein first output is gone into end and is connected to this first type bus, second output is gone into end and then is connected to this second type bus, in order to the data on this first type bus are sent to this second type bus, and also the data on this second type bus are sent to this first type bus; And
(c) a prosecution module, whether normally it is connected to this second type bus, can detect the operation of this first interface circuit constantly in this first system run duration; If not, then send a standby enable signal, in order to this-two interface circuit of activation.
2. fault-tolerant data transmission interface device according to claim 1 is characterized in that: this first system is a server host, and this second system then is an array formula hard-disk system.
3. fault-tolerant data transmission interface device according to claim 1 is characterized in that: this first type bus is a pci bus, and this second type bus then is a SCSI bus.
4. fault-tolerant data transmission interface device according to claim 1 is characterized in that: this prosecution module can be when this first interface circuit breaks down situation, and then sends an alarm signal, notifies personnel to carry out maintenance job with this; And after maintenance job is finished, first interface circuit of repairing is set as standby interface circuit.
5. fault-tolerant data transmission interface device, it is connected between a server host and an array formula hard-disk system applicable to lotus root, and this server host has a pci bus, this array hard-disk system then has a SCSI bus, passes data between this server host and this array hard-disk system mutually in order to allow;
This fault-tolerant data transmission interface device comprises at least with lower member:
(a) one the one PCI-SCSI interface circuit, it is as the interface circuit of master control, and it has, and end is gone in one first output and end is gone in one second output; Wherein first output is gone into end and is connected to this pci bus, and second output is gone into end and then is connected to this SCSI bus, in order to the data on this pci bus are sent to this SCSI bus, and also the data on this SCSI bus is sent to this pci bus;
(b) one the 2nd PCI-SCSI interface circuit, it is as standby interface circuit, and it has, and end is gone in one first output and end is gone in one second output; Wherein first output is gone into end and is connected to this pci bus, and second output is gone into end and then is connected to this SCSI bus, in order to the data on this pci bus are sent to this SCSI bus, and also the data on this SCSI bus is sent to this pci bus; And
(c) a prosecution module, whether normally it is connected to this pci bus, can detect PCI-SCSI interface circuit operation constantly at this server host run duration; If not, then send a standby enable signal, in order to activation the 2nd PCI-SCSI interface circuit.
6. fault-tolerant data transmission interface device according to claim 5 is characterized in that: this prosecution module can be when this first interface circuit breaks down situation, and then sends an alarm signal, notifies personnel to carry out maintenance job with this; And after maintenance job is finished, first interface circuit of repairing is set as standby interface circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01139892 CN1423179A (en) | 2001-12-04 | 2001-12-04 | Fault-tolerant data transmission interface device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01139892 CN1423179A (en) | 2001-12-04 | 2001-12-04 | Fault-tolerant data transmission interface device |
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| Publication Number | Publication Date |
|---|---|
| CN1423179A true CN1423179A (en) | 2003-06-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 01139892 Pending CN1423179A (en) | 2001-12-04 | 2001-12-04 | Fault-tolerant data transmission interface device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105302764A (en) * | 2014-07-28 | 2016-02-03 | 英特尔公司 | Mode selective balanced encoded interconnect |
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2001
- 2001-12-04 CN CN 01139892 patent/CN1423179A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105302764A (en) * | 2014-07-28 | 2016-02-03 | 英特尔公司 | Mode selective balanced encoded interconnect |
| US10078612B2 (en) | 2014-07-28 | 2018-09-18 | Intel Corporation | Mode selective balanced encoded interconnect |
| CN105302764B (en) * | 2014-07-28 | 2018-10-12 | 英特尔公司 | Model selection balance code interconnects |
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