WO2020134340A1

WO2020134340A1 - Hard drive extension system and electronic device

Info

Publication number: WO2020134340A1
Application number: PCT/CN2019/110425
Authority: WO
Inventors: 邹鹏
Original assignee: 中兴通讯股份有限公司
Priority date: 2018-12-28
Filing date: 2019-10-10
Publication date: 2020-07-02
Also published as: CN111382102A

Abstract

A hard drive extension system (10) and an electronic device (1), the hard drive extension system (10) comprising: a hard drive back plate (102), the hard drive back plate (102) being provided thereon with at least two first connectors (106, 108, 110, 112); a hard drive controller card (104), the hard drive controller card (104) being provided thereon with at least two second connectors (114, 116, 118, 120), wherein the at least two first connectors (106, 108, 110, 112) correspond one-to-one to the at least two second connectors (114, 116, 118, 120); at least two cables, any one from among the at least two cables being connected to one of the at least two first connectors (106, 108, 110, 112) and to a second connector (114, 116, 118, 120) corresponding thereto; an assignment module (124), which is connected to the at least two first connectors (106, 108, 110, 112); when powered on, the assignment module (24) assigns a value to each first connector (106, 108, 110, 112) among the at least two first connectors (106, 108, 110, 112), any two assigned values being different; and a logic component, which is connected to the at least two second connectors (114, 116, 118, 120).

Description

Hard disk expansion system and electronic equipment

This disclosure claims the priority of the Chinese patent application CN201811626210.6 entitled "A Hard Disk Expansion System and Electronic Equipment" filed on December 28, 2018, the entire contents of which are incorporated herein by reference.

Technical field

The present disclosure relates to the field of rack servers, and in particular, to a hard disk expansion system and an electronic device.

Background technique

With the development of the Internet, the global demand for servers has increased significantly. In order to meet the needs of large data centers or network centers, rack servers have been widely used in data centers and communication fields.

The rack server can support multiple high-performance CPUs, large-capacity memory, and large-capacity storage. It adopts high-density and modular design. It has the characteristics of high performance, high reliability, high scalability, and easy management. It is widely used in Internet and cloud computing. , Big data, NFV, SDN and other fields.

Out of considerations such as componentization, ease of use, and ease of maintenance, rack servers are generally grouped and modularly designed, consisting of processors, motherboards, memory, hard disk processors, hard disk backplanes, PCIE cards, chassis, power boards, etc. It is composed of other components, and each component is connected by various communication buses to realize the interconnection between the modules.

In order to cope with the increasing storage requirements, the number of hard drives supported in rack servers is increasing, and the performance requirements of hard drives are becoming higher and higher. In the design of rack servers, due to the high performance requirements of IOPS (Input/Output Operations, Per Second, computer storage equipment) of the hard disk, the hard disk control card [RAID (disk array) card or other hard disk pass-through card] passes Mini SAS HD (Mini Serial Attached SCSI (Hard Disk), which is a mini serial hard disk or mini serial high-definition hard disk) cable (in accordance with SFF-8643 standard, the same below) is a common design to connect to the hard disk backplane. Each Mini SAS HD cable can support 4 high-speed LANE (LAN Emulation, LAN simulation or LAN simulation) channels, that is, 4 SAS (Serial Attached SCSI)/SATA (Serial ATA) hard drives can be directly connected through the backplane . When more SAS/SATA hard drives are directly connected between the hard disk control card and the hard disk backplane in the rack server, the more Mini SAS HD cables are required. As shown in Figure 1, with the 16 SAS/SATA disks commonly used in rack servers directly connected, at least 4 Mini SAS HD cables are required.

Due to the rack server's need for hard disk management, the design requires that the connection sequence of each LANE and hard disk of the Mini SAS HD cable is fixed. Therefore, inside the rack server, between the hard disk processor and the hard disk backplane, the connection position of each Mini SAS HD cable needs to be fixed and cannot be connected at will, otherwise there may be confusion of hard disk slots on the management interface and incorrect processor connection And other abnormalities.

When multiple Mini SAS HD cables need to be inserted in a fixed position in a rack server, the wrong position of the cable becomes a high probability event.

At present, in order to solve this problem, various server manufacturers generally adopt two methods:

1. Manually detect the cable installation sequence. This method is inefficient, error-prone, and costly, and is not suitable for mass production.

2. As shown in Fig. 2, it is solved by customizing the cable, bundling multiple cables together, and limiting the insertion to the designated position according to different lengths. Although this method can alleviate the problem of cable misinsertion, it also causes the cable to be uncommon and expensive.

Summary of the invention

In order to solve the above technical problems or at least partially solve the above technical problems, the present disclosure provides a hard disk expansion system that uses a universal cable to ensure that multiple cables on the server can be installed in the correct position.

In a first aspect, the present disclosure provides a hard disk expansion system, including: a hard disk backplane with at least two first connectors; a hard disk control card with at least two second connections on the hard disk control card Connector, at least two first connectors correspond to at least two second connectors in one-to-one correspondence; at least two cables, and any one of the at least two cables connects one of the at least two first connectors to and from it A corresponding second connector; an assignment module, which is connected to at least two first connectors. When the assignment module is powered on, it assigns a value to each of the at least two first connectors. Among them, any two The assignments are different; the logic device is connected to at least two second connectors and receives the assignments to generate a comparison value.

In a second aspect, the present disclosure provides an electronic device, including: the hard disk expansion system as described in any one of the above technical solutions; and a processor connected to a logic device to obtain a comparison value generated by the logic device; a memory, Connected with the processor for storing the correspondence between at least two first connectors, assignments and at least two second connectors; the processor determines at least two first connectors and at least two according to the correspondence and the comparison value Whether the connection of the second connector is a one-to-one connection.

BRIEF DESCRIPTION

The drawings herein are incorporated into and constitute a part of this specification, show embodiments consistent with this disclosure, and are used together with the specification to explain the principles of this disclosure.

In order to more clearly explain the technical solutions in the prior art of the embodiments of the present disclosure, the following will briefly introduce the drawings required in the embodiments or the description of the prior art. Obviously, for those of ordinary skill in the art On the premise of not paying creative labor, you can also obtain other drawings based on these drawings.

Figure 1 is an installation diagram of the connection between the internal hard disk controller of the rack server and the hard disk backplane through four cables in some cases;

FIG. 2 is a schematic diagram of two bundles of customized cables in some cases;

3 is an installation diagram of the connection between a hard disk control card and a hard disk backplane through four cables in a hard disk expansion system according to an embodiment of the present disclosure;

4 is a schematic diagram of a hard disk control card and a hard disk backplane connected by a cable in a hard disk expansion system according to an embodiment of the present disclosure;

5 is a signal definition of a cable in a hard disk expansion system provided by an embodiment of the present disclosure;

6 is a schematic structural diagram of a first connector of a hard disk expansion system according to an embodiment of the present disclosure;

7 is a schematic structural view of another direction of the first connector shown in FIG. 6;

8 is a schematic block diagram of a hard disk expansion system provided by an embodiment of the present disclosure;

9 is a diagram illustrating the definition of the position of a cable socket in a hard disk expansion system according to an embodiment of the present disclosure;

10 is a schematic block diagram of an electronic device according to an embodiment of the present disclosure;

FIG. 11 is a display interface of a cable insertion error in an electronic device provided by an embodiment of the present disclosure.

Among them, the correspondence between the reference symbols and component names in Figures 1 to 11 is:

1 Electronic equipment, 10 hard disk expansion system, 102 hard disk backplane, 104 hard disk control card, 106 first connector A, 108 first connector B, 110 first connector C, 112 first connector D, 114 second Connector A, 116 second connector B, 118 second connector C, 120 second connector D, 122 cable, 124 evaluation module, 1242 high level circuit, 1244 low level circuit, 126 logic device, 128 Resistive components, 20 processors, 22 buses.

detailed description

To make the objectives, technical solutions, and advantages of the embodiments of the present disclosure clearer, the technical solutions in the embodiments of the present disclosure will be described clearly and completely in conjunction with the drawings in the embodiments of the present disclosure. Obviously, the described embodiments It is a part of the embodiments of the present disclosure, but not all the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by a person of ordinary skill in the art without creative efforts shall fall within the protection scope of the present disclosure.

As shown in FIGS. 3, 4 and 8, an embodiment of the first aspect of the present disclosure provides a hard disk expansion system 10, including: a hard disk backplane 102, at least two first connectors are provided on the hard disk backplane 102 Hard disk control card 104, hard disk control card 104 is provided with at least two second connectors, at least two first connectors and at least two second connectors one to one correspondence; at least two cables 122, at least two Any one of the cables is connected to one of the at least two first connectors and a corresponding second connector; the assignment module 124 is connected to at least two first connectors, and when the assignment module 124 is powered on, Each first connector of the at least two first connectors is assigned a value, wherein any two assignments are different; the logic device 126 is connected to at least two second connectors, and receives the assignment to generate a comparison value.

In the hard disk expansion system 10 provided by the embodiment of the present disclosure, each first connector is assigned a value through the assignment module 124, so that each first connector carries a different assignment. When the cable 122 is connected, the 122 transmits the assignment to the logic device 126, and the logic device 126 generates a comparison value according to the received assignment. The comparison value and the assignment value have a one-to-one correspondence. Therefore, according to the comparison value and the assignment value, the first connector and the first connector can be directly reflected. Whether the two connectors are connected in a one-to-one correspondence, so as to realize the automatic judgment of whether the cable 122 is connected correctly, and the design is efficient and the judgment result is accurate, without using a special cable 122, the cost is low, and it is easy to implement.

In an embodiment of the present disclosure, in an implementation manner, as shown in FIG. 8, the assignment module 124 includes: a high-level circuit 1242 and a low-level circuit 1244 provided on the hard disk backplane 102; wherein, the assignment module When the 124 is powered on, the high-level circuit 1242 and the low-level circuit 1244 provide level signals for at least two first connectors, and any two of the at least two first connectors receive different level signals.

In this embodiment, the high-level circuit 1242 and the low-level circuit 1244 of the assignment module 124 realize the binary assignment effect when assigning values, for example: low level represents 0 and high level represents 1, which can achieve the first The binary assignment of the connector, the design is simple and easy, and conforms to the binary standard of the computer program, and the cost is low. In specific embodiments, the high-level circuit 1242 and the low-level circuit can be printed directly on the hard disk backplane 102 1244, value assignment can also be realized through an external module.

In an example of the present disclosure, in an implementation manner, as shown in FIG. 8, any one of the at least two first connectors includes: a first pin connected to the high-level circuit; and / or

The second pin is connected to the low-level circuit.

The at least two first connectors include: a first pin connected to the high-level circuit 1242; a second pin connected to the low-level circuit 1244.

In this embodiment, the first pin of the first connector is connected to the high-level circuit 1242. When the value is assigned, a binary number 1 effect is provided for the first connector, and the second pin of the first connector Connected with the low-level circuit 1244, when assigning, it provides the first connector with a binary number of 0, so as to provide different assignments for the first connector. In the specific implementation process, for each first connector The number of assignments is determined by the number of the first pin and the second pin of each first connector. In one embodiment, the number of the first pin of each first connector is The range is 0 to 8. The number of the second pins of each first connector ranges from 0 to 8. In an embodiment, the first pin and the first pin of each first connector The total number of two pins does not exceed 8, and the design directly connects the pins of the first connector to the assignment module 124, without the need to customize the first connector, which reduces the cost. All the first connectors include the first Pin and second pin.

In an example of the present disclosure, in an implementation, as shown in FIG. 8, the low-level circuit 1244 is a ground circuit.

In this embodiment, the low-level circuit 1244 is a ground circuit, pull down the first pin of the first ground connection to the ground to achieve the effect of binary assignment of 0, and the ground circuit is safe and easy to set up, without adding other electronic components , Saving costs.

In an example of the present disclosure, in an implementation, as shown in FIG. 8, a resistive element 128 is provided between the high-level circuit and the first pin.

In this embodiment, the second pin is pulled up by the resistive element 128 to reduce the current of the second pin to avoid short circuit or excessive current burnout.

In an embodiment of the present disclosure, in an implementation manner, as shown in FIGS. 8 and 9, the logic device 126 is provided on the hard disk control card 104; at least two pins of the second connector and the tube of the logic device 126 The pins are connected one by one.

In this embodiment, the logic device 126 is soldered to the hard disk control card 104, and the pins of the second connector are connected to the pins of the logic device 126 in a one-to-one correspondence, so that the comparison value generated by the logic device 126 is the same as the first The connectors are in one-to-one correspondence.

The logic device 126 is a programmable logic device, that is, EPLD.

In one embodiment, the purpose of the present disclosure is to provide a hard disk expansion system 10 for preventing misinsertion of Mini SAS HD cables 122 on a rack server, which can ensure that multiple Mini SAS HD cables 122 are installed on the server In the correct position, to avoid faults caused by incorrect insertion, this method can directly use ordinary Mini SAS HD cables 122 to achieve error-free connection of multiple hard disk cables 122 in the rack server.

As shown in FIGS. 3 and 4, taking four cables 122 to connect the first connector and the second connector as an example, that is, four first connectors are provided on the hard disk backplane 102, including: the first connector A106 , The first connector B108, the first connector C110, the first connector D112; the hard disk control card 104 is provided with four second connectors, including: a second connector A114, a second connector B116, a second connection Connector C118 and second connector D120, wherein the first connector A106 should be correspondingly connected to the second connector A114, the first connector B108 should be correspondingly connected to the second connector B116, and the first connector C110 should be connected to the second The connector C118 is correspondingly connected, and the first connector D112 should be correspondingly connected to the second connector D120. In the actual operation process, it is very easy for the first connector A106 and the second connector B116 to be connected or other similar wrong connections, and this wrong connection will lead to confusion in the hard disk management of the rack server, which is likely to cause errors. The operation caused an abnormal service.

An embodiment provided by the present disclosure, as shown in FIG. 5, is defined for the cable 122 signal according to the SFF-8643 standard, where A1, A2, B1, B2, C1, C2, D1, and D2 are reserved sidebands, Whereas the embodiment provided by the present disclosure is based on the SFF-8643 standard, a part of the reserved sidebands are selected for definition, and the value is assigned to four first connectors, and the value of each first connector is transmitted to the first The second connector, and the second connector transmits the assignment to the logic device 126, the logic device 126 records the assignment transmitted by the second connector, generates a comparison value, and compares it with the assignment, thereby judging the first connector and the second connector Whether the cables 122 are connected in one-to-one correspondence. It should be noted that the above-mentioned reserved sideband information is for illustrative purposes only, and is not a single case. In other embodiments of the present disclosure, other sidebands may be defined and assigned.

As shown in FIGS. 6 and 7, the first connector A106 (the first connector A106, the first connector B108, the first connector C110, the first connector D112, the second connector A114, the second connector B116 , The second connector C118 and the second connector D120 have the same structure), from top to bottom, the first row of signal pins from one end to the other end is D1 to D9; the second row of signal pins from one end to the other end is C1 To C9; the third row of signal pins from one end to the other end is B1 to B9; the fourth row of signal pins from one end to the other end is A1 to A9;

In an embodiment, as shown in FIG. 8, the three signal pins A2, C1, and D1 in the sideband pins of the first connector A106 are pulled down to ground, that is, the first pin of the first connector A106 is pulled down To ground, that is, the position information of the first connector A106 is defined as binary "000"; the three signal pins C1 and D1 in the side pins of the first connector B108 are pulled down to ground, and A2 is pulled up by a resistor, that is Pull down the first pin of the first connector B108 to the ground, the second pin is pulled up through the resistor, that is, define the position information of the first connector b108 as a binary "001"; for the first connector C110 side tube The three signal pins A2 and D1 in the pin are pulled down to the ground, C1 is pulled up through the resistor, that is, the first pin of the first connector C110 is pulled down to the ground, and the second pin is pulled up through the resistor, which defines the first connection The position information of the connector C110 is binary "010"; pull down the three signal pins D1 in the sideband pins of the first connector D112 to the ground, A2 and C1 are pulled up through the resistance, that is, the first connector D112 One pin is pulled down to the ground, and the second pin is pulled up through the resistor, that is, the position information of the first connector d112 is defined as binary "011".

Sidebands of the first connector A106, the first connector B108, the first connector C110, and the first connector D112 on the hard disk control card 104 through EPLD (programmable logic device) on the hard disk control card 104 The three signals A1, C1, and D2 are connected to EPLD respectively. Among them, the D2, C1 and A1 of the first connector A106 are respectively connected to the P2, P1 and P0 pins of the EPLD, and the D2, C1 and A1 of the first connector B108 are respectively connected to the P5, P4 and P3 pins of the EPLD. The D2, C1 and A1 of a connector C110 are respectively connected to the P8, P7 and P6 pins of the EPLD, and the D2, C1 and A1 of the first connector D112 are respectively connected to the P11, P10 and P9 pins of the EPLD. It should be noted that the corresponding relationship between the sideband of the first connector and the pins of the logic device 126 is a distance description, and is not a single case. In other embodiments of the present disclosure, the first connector sideband and the logic device may be The other pins of 126 are connected.

As shown in FIG. 10, an embodiment of the second aspect of the present disclosure provides a hard disk expansion system 10, an electronic device 1, including: the hard disk expansion system 10 as provided in any of the foregoing embodiments; and a processor 20, and a logic device 126 is connected to obtain the comparison value generated by the logic device 126; the memory is connected to the processor 20 for storing the correspondence between at least two first connectors, assignments and at least two second connectors; the processor 20 is based on The correspondence and the comparison value determine whether the connection between the at least two first connectors and the at least two second connectors is a one-to-one connection.

The electronic device 1 provided by the embodiment of the present disclosure obtains the comparison value generated by the logic device 126 through the processor 20. Since the assigned value is transmitted to the logic device 126 one by one through the first connector, the cable 122, and the second connector, , The comparison value generated by the logic device 126 has a corresponding relationship with the assignment, so that the at least two first connectors can be judged according to the correspondence between the comparison value and at least two first connectors stored in the memory, and the assignment with at least two second connectors Whether the connection between one connector and at least two second connectors is a one-to-one correspondence.

In an embodiment of the present disclosure, in an implementation manner, determining whether the connection between the at least two first connectors and the at least two second connectors is a one-to-one connection according to the correspondence and the comparison value specifically includes: Judging whether the assignment value of the at least two first connectors and the comparison value corresponding to the at least two first connectors are equal; wherein, if the judgment result is equal, it means that the at least two first connectors corresponding to the assignment and the at least two first connectors The two connectors are connected in one-to-one correspondence; if the judgment result is not equal, it means that at least two first connectors corresponding to the assignment and at least two second connectors are not connected in one-to-one correspondence.

In this embodiment, the comparison value is the direct transmission result of the assignment. Therefore, if the comparison value generated according to the assignment transmitted by the second connector is equal to the assignment assigned to the first connector corresponding to the second connector, then It means that the cable 122 is connected correctly. If the comparison value generated according to the value transmitted by the second connector is different from the value assigned to the first connector corresponding to the second connector, it means that the cable 122 is connected incorrectly.

In an embodiment of the present disclosure, in an implementation manner, the method further includes: when the processor 20 determines that the at least two first connectors and the at least two second connectors are not connected in one-to-one correspondence, the processor 20 further According to the corresponding relationship and the comparison value, it is recommended that at least two first connectors are connected to at least two second connectors.

In this embodiment, after the processor 20 determines that the cable 122 is connected incorrectly, the correct connection method of the cable 122 is recommended, that is, the connection method of the first connector and the second connector is recommended according to the correspondence relationship and the comparison value Specifically, according to the correspondence relationship and the comparison value, the connection method of the first connector and the second connector with the corresponding value and the assignment value is recommended. In an embodiment, four cables 122 are used to intercept four first connections For example, the first connector A106, the second connector A114, and the assignment A are the corresponding relationship; the first connector B108, the second connector B116, and the assignment B are the corresponding relationship; the first connection C110, second connector C118, and assignment C are the corresponding relationships; first connector D112, second connector D120, and assignment D are the corresponding relationships, if the comparison value and assignment B generated according to the assignment transmitted by the second connector A114 If they are equal, it is recommended that the cable 122 connected to the second connector A114 is connected to the second connector B116; if the comparison value generated according to the assignment transmitted by the second connector B116 is equal to the assignment A, it is recommended to connect the second connector now The cable 122 of B116 is connected to the second connector A114; if the comparison value generated according to the assignment transmitted by the second connector C118 is equal to the assignment C, it means that the first connector C110 and the second connector C118 are connected correctly; if The comparison value generated according to the assignment transmitted by the second connector D120 is equal to the assignment D, which means that the connection between the first connector D112 and the second connector D120 is correct.

In an example of the present disclosure, in an implementation manner, it further includes: a display device connected to the processor 20 for displaying the recommended connection of at least two first connectors and at least two second connectors the way.

In this embodiment, the display device displays the connection manner of the at least two first connectors and at least two second connectors recommended by the processor 20, so that the user can adjust the cable 122 according to the display content.

In an embodiment of the present disclosure, in an implementation manner, the method further includes: at least two cue lights, connected to the processor 20, and corresponding to at least two second connectors in one-to-one; When a connector and at least two second connectors are not connected in one-to-one correspondence, at least one of the at least two indicator lights issues a reminder to indicate that any one of the at least two second connectors is not connected to at least two second connectors. One connector corresponds to one-to-one connection.

In this embodiment, when the processor 20 determines that the cable 122 is connected incorrectly, the indicator light corresponding to the incorrectly connected second connector issues a prompt to show which second connector is incorrectly connected, so that the user can easily find the wrong connection The cable 122.

In an embodiment, as shown in FIG. 8, the three signal pins A2, C1, and D1 in the sideband pins of the first connector A106 are pulled down to ground, that is, the first pin of the first connector A106 is pulled down To ground, that is, the position information of the first connector A106 is defined as binary "000"; the three signal pins C1 and D1 in the side pins of the first connector B108 are pulled down to ground, and A2 is pulled up by a resistor, that is Pull down the first pin of the first connector B108 to ground, the second pin is pulled up through the resistor, that is to define the position information of the first connector B108 as a binary "001"; for the first connector C110 sideband tube The three signal pins A2 and D1 in the pin are pulled down to the ground, C1 is pulled up through the resistor, that is, the first pin of the first connector C110 is pulled down to the ground, and the second pin is pulled up through the resistor, which defines the first connection The position information of the connector C110 is binary "010"; pull down the three signal pins D1 in the sideband pins of the first connector D112 to the ground, A2 and C1 are pulled up through the resistance, that is, the first connector D112 One pin is pulled down to the ground, and the second pin is pulled up through the resistor, that is, the position information of the first connector D112 is defined as binary "011".

Sidebands of the first connector A106, the first connector B108, the first connector C110, and the first connector D112 on the hard disk control card 104 through EPLD (programmable logic device) on the hard disk control card 104 The three signals A1, C2, and D2 are connected to EPLD respectively. Among them, D2, C2 and A1 of the first connector A106 are respectively connected to the P2, P1 and P0 pins of the EPLD, and D2, C2 and A1 of the first connector B108 are respectively connected to the P5, P4 and P3 pins of the EPLD. The D2, C2, and A1 of a connector C110 are respectively connected to the P8, P7, and P6 pins of the EPLD, and the D2, C2, and A1 of the first connector D112 are respectively connected to the P11, P10, and P9 pins of the EPLD. It should be noted that the corresponding relationship between the sideband of the first connector and the pins of the logic device 126 is a distance description, and is not a single case. In other embodiments of the present disclosure, the first connector sideband and the logic device may be The other pins of 126 are connected.

When the hard disk control card 104 and the hard disk backplane 102 are connected by a Mini SAS HD cable 122, the processor 20 of the rack server (in one embodiment, the processor 20 is a BMC management module) can pass through the bus 22 (in a In the embodiment, the bus 22 is an I2C bus), and reads the corresponding value in the EPLD, that is, the slot information corresponding to Mini SAS HD. When the BMC reads the values of P2-P0, P5-P3, P8-P6, and P11-P9 on the hard disk control card 104 as shown in Figure 9, it means that the cable 122 is connected correctly, otherwise it means that the cable 122 is connected incorrectly. As shown in Figure 11, when an error occurs, you can read the wrong wiring position of each socket of A, B, C, and D. The BMC management module gives an error alarm on the graphical interface and indicates the correct position where the cable 122 should be connected Compared with the actual misconnected position, it is easy to replace.

Relative to the related art, the hard disk expansion system 10 and the electronic device 1 provided by the present disclosure are respectively reserved on the Mini SAS HD connectors on the hard disk control card 104 and the hard disk backplane 102 by using Mini SAS HD cables 122 The sideband signal defines the position information of each cable 122. Through the I2C bus of the rack server BMC management module, read the location information of the Mini SAS HD cable 122 from the existing EPLD (programmable logic device) of the hard disk control card 104 to determine whether the cable 122 has been inserted in the correct position . The design of the present disclosure is flexible, reducing cost and design complexity, and the accuracy of misplugging of the detection cable 122 can reach 100%.

In this disclosure, at least one signal of the sideband in the SFF-8643 standard Mini SAS HD cable 122 is used to detect the position of the cable 122, which can simultaneously accurately detect the misinsertion problem of at least two cables 122, wherein, in In one embodiment, the position of the cable 122 is detected by three signals, which can be notified to accurately detect the wrong insertion of 2 to 7 cables 122. The hard disk expansion system 10 and the electronic device 1 provided by the present disclosure can select a desired sideband signal according to the number of cables 122 actually used in the rack server.

It should be noted here that sideband signals are used for other purposes in different situations.

The present disclosure can provide a method for preventing misinsertion of the Mini SAS HD cable 122 on the rack server, and can check whether the Mini SAS HD cable 122 on the server is inserted in the wrong position in real time. Using this method, ordinary Mini SAS HD cables 122 can be directly used to realize error-free connection of multiple hard disk cables 122 in the rack server. By reducing errors and reducing costs, it plays a significant role in the intelligent generation and processing of rack servers.

The hard disk expansion system and the electronic device provided by the embodiments of the present disclosure assign values to each first connector through an assignment module, so that each first connector carries a different assignment value. The assignment is transmitted to the logic device, and the logic device generates a comparison value according to the received assignment. The comparison value and the assignment value have a one-to-one correspondence. Therefore, the first connector and the second connector can be directly reflected according to the comparison value and assignment Whether one-to-one correspondence is made, so as to realize the automatic judgment of whether the cable connection is correct, and the design is efficient and the judgment result is accurate. There is no need to use special cables, the cost is low, and it is easy to implement.

It should be noted that in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply these There is any such actual relationship or order between entities or operations. Moreover, the terms "include", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device that includes a series of elements includes not only those elements, but also those not explicitly listed Or other elements that are inherent to this process, method, article, or equipment. Without more restrictions, the element defined by the sentence "include one..." does not exclude that there are other identical elements in the process, method, article or equipment that includes the element.

The above are only specific implementations of the present disclosure, so that those skilled in the art can understand or implement the present disclosure. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present disclosure. Therefore, the present disclosure will not be limited to the embodiments shown herein, but shall conform to the widest scope consistent with the principles and novel features applied herein.

Claims

A hard disk expansion system, which includes:

A hard disk backplane, at least two first connectors are provided on the hard disk backplane;

A hard disk control card, at least two second connectors are provided on the hard disk control card, and the at least two first connectors correspond to the at least two second connectors in one-to-one correspondence;

At least two cables, and any one of the at least two cables is connected to one of the at least two first connectors and a second connector corresponding thereto;

An assignment module is connected to the at least two first connectors. When the assignment module is powered on, it assigns a value to each of the at least two first connectors. Among them, any two The assignment is different;

The logic device is connected to the at least two second connectors and receives the assignment to generate a comparison value.
The hard disk expansion system according to claim 1, wherein

The evaluation module includes: a high-level circuit and a low-level circuit provided on the hard disk backplane;

Wherein, when the evaluation module is powered on, the at least two first connectors are provided with level signals through the high level circuit and the low level circuit, and any two of the at least two first connectors The received level signals are different.
The hard disk expansion system according to claim 2, wherein

Any one of the at least two first connectors includes:

The first pin is connected to the high-level circuit; and/or

The second pin is connected to the low-level circuit.
The hard disk expansion system according to claim 2, wherein

The low-level circuit is a ground circuit.
The hard disk expansion system according to claim 3, wherein

A resistive element is provided between the high-level circuit and the first pin.
The hard disk expansion system according to any one of claims 1 to 5, wherein

The logic device is provided on the hard disk control card;

The pins of the at least two second connectors are connected to the pins of the logic device in a one-to-one correspondence.
An electronic device, comprising: the hard disk expansion system according to any one of claims 1 to 6; and

The processor is connected to the logic device to obtain the comparison value generated by the logic device;

A memory, connected to the processor, for storing the correspondence between the at least two first connectors, the assignment, and the at least two second connectors;

The processor determines whether the connection between the at least two first connectors and the at least two second connectors is a one-to-one connection according to the correspondence and the comparison value.
The electronic device according to claim 7, wherein the judging whether the connection between the at least two first connectors and the at least two second connectors is a one-to-one connection according to the correspondence and the comparison value include:

Judging whether the assignment value of the at least two first connectors and the comparison value corresponding to the at least two first connectors are equal;

Wherein, if the judgment result is equal, it means that the at least two first connectors corresponding to the assignment and the at least two second connectors are connected in a one-to-one correspondence;

If the judgment results are not equal, it means that the at least two first connectors corresponding to the assignment and the at least two second connectors are not connected in a one-to-one correspondence.
The electronic device according to claim 8, further comprising:

If the judgment result is not equal, it means that after the at least two first connectors and the at least two second connectors corresponding to the assignment are not connected in a one-to-one correspondence, the processor may also The comparison value recommends a connection method of the at least two first connectors and the at least two second connectors.
The electronic device according to claim 9, further comprising:

A display device, connected to the processor, is used to display the recommended connection mode of the at least two first connectors and the at least two second connectors.
The electronic device according to any one of claims 7 to 10, further comprising:

At least two cue lights connected to the processor and corresponding to the at least two second connectors;

When it is judged that the at least two first connectors and the at least two second connectors are not connected in a one-to-one correspondence, at least one of the at least two prompt lights issues a prompt to prompt the at least two Any one of the second connectors is not connected to the at least two first connectors in a one-to-one correspondence.