CN111289922B - Cable plugging detection method and related equipment - Google Patents

Abstract

The present application provides a cable insertion detection method and related equipment. The method includes: a baseboard management controller (BMC), configured to send a cable detection instruction to a RAID card, where the cable detection instruction is used to instruct the RAID card to detect the relationship between the RAID card and the RAID card. The connection status of the cables between the hard disk backplanes; the RAID card is used to receive the cable detection instruction, and generate a detection signal with a preset mark according to a preset rule according to the cable detection instruction; send it to the hard disk backplane The detection signal; the BMC obtains an analysis result, and compares the analysis result with a preset value to confirm the cable insertion state, wherein the analysis result is obtained by analyzing the detection signal by the hard disk backplane. In this way, automatic cable insertion detection is realized, which saves manpower and material costs.

Description

Cable insertion detection method and related equipment

technical field

The present application relates to the technical field of cable insertion, and in particular, to a cable insertion detection method and related equipment.

Background technique

In the server, the hard disk backplane is usually used to realize the connection between the redundant array of independent disks (RAID) card and multiple hard disks, and then the data on the hard disks is striped through the RAID card to realize the block access to the data. . Usually, the RAID card and the hard disk backplane need to be connected through a large number of cables to realize data interaction, and the number of hard disks connected to the same RAID card is limited by the number of ports on the RAID card. When the number of hard disks configured in the server increases, the number of RAID cards It has also increased, and accordingly, the number of cables has also increased. On the other hand, in order to increase the reusability of cables in the server, the connectors used in the cable ports are all the same, and the difference between different cables is only the difference in length. However, different cables may have a long parallel route in the chassis, or the cables may cross multiple times, so it is difficult to distinguish the corresponding relationship with the opposite port. In the process of production and maintenance, it is easy to cause the wrong cables to be inserted into each other. In the traditional technology, different cables are identified by physical methods such as adding labels on the cables, and the accuracy of cable insertion is determined by manual confirmation by maintenance personnel. However, in the case where there are multiple RAID cards in the same server and need to support flexible RAID insertion, due to the large number of cables and the complex layout, the current method cannot realize the effective detection of cable insertion, and it is easy to cause the server to fail to recognize the hard disk or cable. The problem of disordered connection affects the use of hard disk resources by applications in the server. Therefore, how to provide an automated cable insertion detection method has become an urgent technical problem to be solved.

SUMMARY OF THE INVENTION

The present application discloses a cable insertion detection method and related equipment, which can realize automatic cable insertion detection and save labor and material cost.

In a first aspect, the present application discloses a cable insertion detection method, which is applied to a server, and the server includes a main board and a hard disk backplane. Wherein: the mainboard includes a baseboard management controller (baseboard management controller, BMC) and a redundant array of independent disks RAID card, and the BMC and the RAID card are connected through a slot. The hard disk backplane includes a plurality of connectors. The ports of the RAID card are connected one-to-one with the plurality of connector ports through cables. The BMC is used to send the cable detection instruction to the above RAID card. The RAID card receives the cable detection instruction, and generates a preset-marked detection signal according to a preset rule according to the cable detection instruction; and then sends the generated detection signal to the hard disk backplane. The BMC obtains an analysis result, and compares the analysis result with a preset value to confirm the cable insertion state between the RAID card and the plurality of connector ports, wherein the analysis result is generated by the hard disk backplane analyzing the RAID card. The detection signal is obtained. The baseboard management controller BMC controls the RAID card to generate different detection signals to detect whether the cable between the RAID card and the connector is correctly inserted, thereby realizing automatic cable detection and improving the efficiency and accuracy of cable detection. , saving manpower and material costs.

Optionally, the above slot may be a peripheral component interconnect express (PCIe) slot, an inter-integrated circuit (I2C) slot, or a serial general purpose input/output (serial general purpose input/output) slot. output, SGPIO) slot, etc.

In a possible implementation manner, the above-mentioned preset rule for generating the detection signal of the preset mark may include any one of the following manners:

Mode 1: The output ports of the RAID card are all configured with square waves with different duty cycles. The cable detection indication includes the value of the duty cycle. The RAID card can generate a detection signal according to the duty cycle value to detect the The status of the cable that the port is connected to the port of the connector.

Mode 2: The cable detection indication includes a frequency, and the RAID card can generate a detection signal according to the frequency, so as to detect the status of the cable connected between the port of the RAID card and the port of the connector. For example, the frequencies of the detection signals output by each signal output port of each RAID card 112 are different.

Mode 3: The cable detection indication includes serial data, and the serial data can be used to uniquely identify a signal, so as to detect the state of the cable connected between the port of the RAID card and the port of the connector. For example, the detection signals output by each signal output port of each RAID card 112 are different serial data signals.

Mode 4: The cable detection instruction includes a random number. Different cable detection instructions carry different random numbers. The designated position of the detection signal carries the number, and the RAID card generates a detection signal in any form to represent the number.

In another possible implementation manner, the RAID card outputs the generated detection signal from a plurality of signal output ports according to a preset rule.

Optionally, the preset rule may include an association relationship between the generated detection signal and a plurality of signal output ports preconfigured in the RAID card. For example, the relationship of outputting the generated signal with a duty ratio of 20% from the signal output port 1, the relationship of outputting the generated signal with a duty ratio of 30% from the signal output port 2, and the like.

Optionally, the preset rule may include a mapping relationship between the generated detection signal and multiple signal output ports determined according to the received cable detection indication. For example, the received cable detection instruction includes an instruction to output the generated signal with a duty cycle of 20% from the signal output port 1, and output the generated signal with a duty cycle of 30% from the signal output port 2, and the like. .

Optionally, the preset rule may include determining the output port of the detection signal according to the correlation between the signal and the output port when the RAID card outputs the generated detection signal from the corresponding signal output port for the first time. For example, for the first time in RAID card 1, the detection signals with a duty ratio of 20% and 30% are output from the signal output port 1 and the signal output port 2 respectively, and then the detection signals with a duty ratio of 20% and 30% are outputted again. Output from signal output port 1 and signal output port 2 respectively.

In another possible implementation manner, the above-mentioned slot is any one of a plurality of slots in the above-mentioned motherboard for connecting a plurality of RAID cards. The cable detection indication sent by the BMC to the RAID card may be sorting information of the slot; the sorting information is obtained by sorting the multiple slots of the multiple RAID cards in the motherboard by the BMC. The present application uses the sorting information of the RAID card slot as the cable detection indication of the detection signal generated by the RAID card, which is simple and easy to implement and does not occupy too many computing resources.

In another possible implementation manner, the analysis result obtained by the BMC is specifically the analysis result stored in the preset address of the BMC obtaining register. Wherein, the preset address includes a plurality of storage addresses, and the plurality of storage addresses are mapped one-to-one with the above-mentioned plurality of connector ports. Each of the plurality of storage addresses is used to store an analysis result of a detection signal; the analysis result stored in each address is the result of the detection signal received by the backplane processor of the above-mentioned hard disk backplane according to the connector port mapped by each address. parsed results. The present application can quickly determine the connection of the cable between the RAID card and the connector port by comparing the analysis result obtained by analyzing the detection signal during the current detection with the preset value.

In another possible implementation manner, the case that the port of the RAID card and the plurality of connector ports are connected one-to-one by cables for the first time is the case that the cables are correctly inserted. Then, before the above-mentioned BMC sends the cable detection instruction to the above-mentioned RAID card, and when the BMC initiates the cable insertion detection between the port of the RAID card and the plurality of connector ports for the first time, the BMC will start from the The parsing result obtained in the preset address of the register is set as a preset value; wherein, the parsing result includes the result parsed for the first time by the backplane processor of the hard disk backplane according to the detection signals received by the plurality of connector ports. In this application, the BMC does not need to preset the preset values of various plug-in methods and the preset alarm information of various plug-in methods in advance, and only needs to use the information stored in the preset address in the register at the first detection as the first detection. The default value can be used for subsequent comparisons. In addition, as for the alarm, since the BMC controls the RAID card to generate the detection signal, and the BMC can also control which RAID card port the detection signal generated by the RAID card is sent from, the BMC can determine which cables to use based on this information and the result of the aforementioned comparison. Misconnection. In this way, the present application can realize automated cable detection.

In a second aspect, the present application discloses a cable insertion detection method, which is applied to a server, and the server includes a main board and a hard disk backplane. Wherein: the motherboard and the hard disk backplane are connected by cables. The cable insertion detection method disclosed in the present application may include the following steps:

The above-mentioned mainboard is used for sending a detection signal to the above-mentioned hard disk backplane. The hard disk backplane receives the detection signal, analyzes the detection signal to obtain an analysis result, and sends the analysis result to the mainboard. The mainboard receives the analysis result, and compares the analysis result with the preset value to confirm the plugging state of the cable between the mainboard and the hard disk backplane.

In the present application, the baseboard management controller BMC controls the RAID card to generate different detection signals to detect whether the cable between the RAID card and the connector is correctly inserted, thereby realizing automatic cable detection and improving cable detection. efficiency and accuracy, saving manpower and material costs.

The operations that may be implemented by the motherboard may correspond to the operations performed by the BMC and the RAID card in the first aspect and its possible implementation manners, which will not be repeated here.

In a third aspect, the present application discloses a baseboard management controller BMC, where the BMC includes various units for performing operations performed by the BMC in the first aspect or any possible implementation manner of the first aspect.

In a fourth aspect, the present application discloses a redundant array of independent disks RAID card, the RAID card including various units for performing operations performed by the RAID card in the first aspect or any possible implementation manner of the first aspect.

In a fifth aspect, the present application discloses a cable insertion detection device, the device comprising:

a first sending unit, configured to send a cable detection instruction to the RAID card; the cable detection instruction is used to instruct the RAID card to detect the connection status of the cable between the RAID card and the hard disk backplane;

a receiving unit for receiving the cable detection indication;

a generating unit, configured to generate a detection signal of a preset mark according to a preset rule according to the cable detection instruction;

a second sending unit, configured to send the detection signal to the hard disk backplane;

Get unit, used to get the parsing result;

The comparison unit is configured to compare and confirm the plug-in state of the cable according to the analysis result and a preset value, wherein the analysis result is obtained by analyzing the detection signal by the hard disk backplane.

In a possible implementation manner, a plurality of RAID cards are inserted into the plurality of slots of the above-mentioned device; the above-mentioned cable detection indication is the order information of the slots in which the above-mentioned RAID is inserted; the order information is the order information of the plurality of Get after the slots are sorted.

In another possible implementation manner, the hard disk backplane receives the detection signal through a plurality of connector ports;

The above obtaining unit is specifically configured to obtain the above analysis result stored in the preset address of the register.

Specifically, the preset address includes a plurality of storage addresses, and the plurality of storage addresses are mapped one-to-one with the above-mentioned plurality of connector ports; each address of the plurality of storage addresses is used to store an analysis result of a detection signal; The analysis result stored in one address is the result analyzed by the backplane processor of the hard disk backplane according to the detection signal received by the connector port of each address mapping.

In another possible implementation manner, the above-mentioned comparison unit is further configured to obtain the analysis result obtained from the preset address of the register when the cable insertion detection between the above-mentioned RAID card and the hard disk backplane is initiated for the first time is set as a default value; wherein, the default value includes the result parsed for the first time by the backplane processor of the hard disk backplane according to the detection signals received by the plurality of connector ports.

Optionally, the above-mentioned device for detecting cable insertion may be a mainboard of a server.

In a sixth aspect, the present application discloses a server, which includes the baseboard management controller of the third aspect and the redundant array of independent disks of the fourth aspect.

In a seventh aspect, the present application discloses a baseboard management controller BMC, where the BMC includes a processor, a memory, and a communication interface; the memory and the communication interface are coupled to the processor. The memory stores a computer program; the processor invokes the computer program, so that the BMC executes the operation steps of the method performed by the BMC in the first aspect or any possible implementation manner of the first aspect.

In an eighth aspect, the present application discloses a RAID card of a redundant array of independent disks. The RAID card includes a processor, a memory, and a communication interface; the memory and the communication interface are coupled to the processor. The memory stores a computer program; the processor invokes the computer program, so that the RAID card executes the operation steps of the method performed by the RAID card in the first aspect or any possible implementation manner of the first aspect.

In a ninth aspect, the present application discloses a mainboard, which includes a baseboard management controller BMC and a redundant array of independent disks RAID card. The BMC is the BMC of the seventh aspect, and the RAID card is the RAID card of the eighth aspect.

In a tenth aspect, the present application discloses a server, which includes a main board and a hard disk backplane, and the main board includes a baseboard management controller BMC and a redundant array of independent disks RAID card. The BMC and the RAID card are connected through slots; the hard disk backplane includes a plurality of connectors; the ports of the RAID card are connected to the plurality of connector ports one-to-one by cables. The BMC is the BMC described in the seventh aspect; the RAID card is the RAID card described in the eighth aspect.

In an eleventh aspect, the present application discloses a computer-readable storage medium, where a computer program is stored in the computer-readable storage medium, and the computer program is executed by a processor to implement the various aspects or any possible implementation manner of the various aspects. steps of the method.

In a twelfth aspect, the present application provides a computer program product which, when run on a computer, causes the computer to perform the methods described in the various aspects above.

To sum up, in this application, the baseboard management controller BMC controls the RAID card to generate different detection signals to detect whether the cable between the RAID card and the connector is correctly inserted, thereby realizing automatic cable detection. It improves the efficiency and accuracy of cable detection and saves manpower and material costs.

Description of drawings

FIG. 1 is a schematic structural diagram of a system to which a cable insertion detection method provided by an embodiment of the present application is applicable;

FIG. 2 is a schematic flowchart of a cable insertion detection method provided by an embodiment of the present application;

FIG. 3 is a schematic diagram of a logical structure of a baseboard management controller according to an embodiment of the present application;

4 is a schematic diagram of a logical structure of a redundant array of independent hard disks according to an embodiment of the present application;

FIG. 5 is a schematic diagram of a logical structure of a motherboard according to an embodiment of the present application;

FIG. 6 is a schematic diagram of a hardware structure of a baseboard management controller according to an embodiment of the present application;

FIG. 7 is a schematic diagram of a hardware structure of a redundant array of independent hard disks according to an embodiment of the present application.

Detailed ways

In order to better understand a cable insertion detection method provided by the present application, the following is an exemplary description of the applicable scenarios of the present application. Referring to FIG. 1 , FIG. 1 is a schematic diagram of a system architecture of a server 100 to which the cable insertion detection method provided by the present application is applicable. As shown in FIG. 1 , the server 100 may include a mainboard 110 and a hard disk backplane 120 .

The mainboard 110 includes a baseboard management controller (BMC) 111 , a mainboard processor 113 and at least one RAID card 112 . The mainboard processor 113 and the BMC can communicate through a parallel bus connection. Optionally, the parallel bus may be a standard data bus (STD) or an institute of electrical and electronics engineers (IEEE) 488 or the like.

The mainboard 110 may further include a central processing unit (CPU) (not shown in FIG. 1 ), and the CPU may store data to or read data from the hard disk through the hard disk backplane 120 .

The baseboard management controller 111 can be used to perform some operations such as firmware upgrade of the device, viewing of the device, and the like during the device initialization process. For example, the baseboard management controller 111 can be used to complete the cable detection when the standby (STANBY) power supply of the server 100 is powered on, so as to avoid service interruption caused by the cable connection problem found after the server operating system is started.

The mainboard processor 113 is a device in the mainboard for assisting the CPU to complete the calculation of various data. Optionally, the motherboard processor 113 may be a CPU, a complex programmable logic device (CPLD), a digital signal processor (digital signal processing, DSP), an application specific integrated circuit (ASIC), an on-site Programmable gate array (field programmable gate array, FPGA) or other programmable logic devices, transistor logic devices, general-purpose processors, and the like.

The RAID card 112 is used to implement the management of the hard disk by the server 110 . For example, multiple hard disks can be formed into a logical disk, and the logical disk can be divided into multiple stripes according to preset rules, and each stripe can be used as a logical volume, so as to provide storage resource hard disks to upper-layer applications. In addition, by dividing data into multiple data blocks (blocks) and writing/reading multiple hard disks in parallel to improve the speed of accessing hard disks, it can also provide fault tolerance through mirroring or parity operations, and so on.

Each RAID card 112 includes a RAID processor 1121 and a signal output port, and the signal output port is connected to the connector 121 of the hard disk backplane 120 through a cable. The RAID processor 1121 in each RAID card 112 is directly electrically connected to the slot into which the RAID card 112 is inserted, and then the RAID processor 1121 of the RAID card 112 is electrically connected to a plurality of signal output ports of the RAID card 112 . The RAID processor 1121 is mainly used for processing the data received by the RAID card 112 . For example, in this embodiment of the present application, the RAID processor 1121 is mainly used to generate a detection signal for the cable detection instruction received from the baseboard management controller 111 and send it to the hard disk backplane 120 and so on.

Optionally, the RAID processor 1121 may be a complex programmable logic device (CPLD), a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic devices, transistors Logic devices, general purpose processors, etc.

Each RAID card 112 is connected to the motherboard 110 through a slot 1122 . The slot 1122 into which the RAID card is inserted may be a peripheral component interconnect express (PCIe) slot, an inter-integrated circuit (I2C) slot, or a serial universal input output (serial) slot. generalpurpose input/output, SGPIO) slots, etc. BMC and RAID card can be connected and communicated through PCIE bus, I2C bus or SGPIO bus, etc.

In the embodiment of the present application, the signal sent by the BMC 111 is transmitted to the RAID processor 1121 through the slot 1122 in which the RAID card 112 is inserted, and the RAID processor 1121 generates a corresponding detection signal according to the received cable detection instruction, and the above detection Signals are transmitted from the plurality of signal output ports to the connector 121 port of the hard disk backplane 120 through cables. Wherein, each detection signal is different. Optionally, the signals sent by different signal output ports are also different.

The RAID card 112 can generate detection signals with different preset marks according to the cable detection instruction sent by the BMC 111 . The detection signal includes multiple signals, and the preset marks of each signal are different, that is, each signal is a globally unique signal.

The hard disk backplane 120 includes a backplane processor 122 and a plurality of connectors 121 . The backplane processor 122 is connected to the plurality of connectors 121 . Specifically, the backplane processor 122 may receive signals from the RAID card 112 through the plurality of connectors 121 . The hard disk backplane 120 is also connected to the hard disk array, so as to realize the management of the hard disks by the above-mentioned CPU. The connector 121 can be connected to the signal output port of the RAID card 112 via a serial advanced technology attachment (SATA) port or a serial attached small computer system interface (serial attached small computer system interface, SAS) port or a cable. .

The connector 121 is mainly used to realize the cable connection between the RAID card 112 and the hard disk backplane 120 .

The backplane processor 122 may be used to process signals received in the connector 121 . For example, in this embodiment of the present application, the backplane processor 122 may be configured to analyze the detection signal received in the connector 121 to obtain an analysis result and the like.

Optionally, the backplane processor 122 may be a complex programmable logic device (CPLD), a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic devices, Transistor logic devices, general purpose processors, etc.

In addition, the backplane processor 122 of the hard disk backplane 120 is connected to the mainboard processor 113 . Optionally, the backplane processor 122 and the mainboard processor 113 may be connected through a serial general purpose input/output (SGPIO) bus.

It should be noted that the present application does not limit the number of signal output ports in the RAID card, which can be set according to business requirements in specific implementation.

Next, the cable plugging detection method provided by the present application is further introduced in conjunction with FIG. 2 , and the method can be applied to the system architecture of the server shown in FIG. 1 . As shown in Figure 2, the method includes but is not limited to the following steps:

Step 201: The baseboard management controller BMC sends a cable detection instruction to the RAID card.

Specifically, the BMC can select some RAID cards from multiple RAID cards to send cable detection instructions to the RAID cards one by one, or send cable detection instructions to all selected RAID cards at the same time, or directly send cable detection instructions to multiple RAID cards. Cable detection indication. As a possible implementation manner, the cable detection indication includes the identification of the slot into which the RAID card is inserted by the BMC, for example, the slot number, the slot address, or other information that can be used to identify the slot.

Optionally, the identifier may be sequence information of slots into which N (N is an integer greater than 1) RAID cards are inserted. For example, if each of the N RAID cards is inserted into a slot, the order information of the slots into which the RAID cards are inserted may be 1 to N, that is, the marking information includes 1 to N, that is, the above-mentioned cable detection Indications include 1 to N. Then, the BMC can send the cable detection indication "1" to the RAID card inserted in the slot ranked 1, and send the cable detection indication "2" to the RAID card inserted in the slot ranked 2, etc. Wait. This is just an example. The information sent by the BMC to the RAID card is determined according to the specific situation, and this solution does not limit this.

Optionally, the specific implementation process of the above-mentioned BMC sorting the slots into which the RAID cards are inserted may include:

First, the BMC queries the board number of the RAID card inserted in the slot.

Optionally, the BMC can query the board number of the RAID card inserted in the slot by using I2C polling.

The board number may also be called the type number of the RAID card. Check whether a RAID card is inserted into the slot by querying the board number of the RAID card in the slot. Specifically, if the board number of the RAID card is queried in the slot, it indicates that a RAID card is inserted into the slot; otherwise, no RAID card is inserted.

Suppose it is queried that there are RAID cards inserted into N slots, that is, the above N RAID cards. Then, the above-mentioned BMC sorts the N slots to obtain the sorting information of each slot.

If the above-mentioned cable detection indication is the sequence information of the slots, the BMC sends the sequence information of the N slots to the corresponding inserted RAID cards. That is, the sorting information of the ith slot is sent to the RAID card inserted in the ith slot, where the value of i ranges from 1 to N.

This embodiment of the application uses the sorting information of the RAID card slot as the cable detection indication for the detection signal generated by the RAID card, which is simple and easy to implement, and does not occupy too many computing resources.

Step 202: The RAID card respectively generates detection signals according to the cable detection instructions.

The generated detection signal includes a plurality of detection signals of different preset markers. Wherein, the detection signals of multiple different preset markers may include one or more of the following forms:

Form 1, the signals with different duty ratios may be, for example, square wave signals or triangular wave signals with different duty ratios.

Form 2, signals with different frequencies, for example, can be square wave signals, sinusoidal signals or triangular wave signals with different frequencies.

Form 3, serial data signal with different number of bits, etc.

Form 4, different random numbers, etc.

Specifically, the RAID card has multiple signal output ports, and the number of signal output ports of each RAID card may be the same or different, which is determined according to the actual situation, which is not limited in this solution.

Optionally, each cable detection indication is used to instruct the RAID card to generate multiple detection signals with different preset marks, and the detection signals generated by different RAID cards have different preset marks.

Further, the RAID card may generate a corresponding detection signal according to a preset rule according to the cable detection instruction. The preset rules include any one of the following methods:

Mode 1: The output ports of the RAID card are all configured with square waves with different duty cycles. The cable detection indication includes the value of the duty cycle. The RAID card can generate a detection signal according to the duty cycle value to detect the The status of the cable that the port is connected to the port of the connector.

Mode 2: The cable detection indication includes a frequency, and the RAID card can generate a detection signal according to the frequency, so as to detect the status of the cable connected between the port of the RAID card and the port of the connector. The frequencies of the detection signals output by each signal output port of each RAID card 112 are different.

Mode 3: The cable detection indication includes serial data, and the serial data can be used to uniquely identify the detection signal, so as to detect the state of the cable connected between the port of the RAID card and the port of the connector. The detection signals output by each detection signal output port of each RAID card 112 are different serial data signals.

Mode 4: The cable detection instruction includes a random number. Different cable detection instructions carry different random numbers. The designated position of the detection signal carries the number. The RAID card generates a detection signal in any form to represent the number.

For ease of understanding, the following description is given by taking the detection signal as a square wave signal with different duty ratios as an example.

Example 1: Suppose there are 2 RAID cards (referred to as RAID card 1 and RAID card 2 respectively) plugged into the motherboard, and each RAID card has 2 signal output ports. Then, the BMC sends different cable detection indication 1 and cable detection indication 2 to the RAID card 1 and the RAID card 2 respectively. Since the preset rule for generating two square wave signals with duty ratios of 20% and 30% according to cable detection indication 1 is preconfigured in RAID card 1, RAID card 2 is configured with cable detection indication 2 The preset rule for generating two square wave signals with duty cycles of 40% and 50% respectively; therefore, RAID card 1 generates two channels of square wave signals with duty cycles of 20% and 30% according to the received cable detection indication 1. Square wave signal. The RAID card 2 generates two square wave signals with duty ratios of 40% and 50% respectively according to the received cable detection instruction 2 .

Step 203: The RAID card sends the generated detection signal to the backplane processor through its own multiple signal output ports.

Step 204: The backplane processor receives the detection signal sent by the RAID card through the connector port, and each connector port receives one channel of the detection signal.

After the RAID card generates multiple detection signals with different preset marks, the multiple signals are respectively output from multiple signal output ports, and each signal output port outputs one detection signal, which is sent to the backplane processor through a cable.

Specifically, the RAID card outputs the generated detection signals from a plurality of signal output ports according to preset rules.

Optionally, the preset rule may include an association relationship between the generated detection signal and a plurality of signal output ports preconfigured in the RAID card. For example, the relationship of outputting the generated signal with a duty ratio of 20% from the signal output port 1, the relationship of outputting the generated signal with a duty ratio of 30% from the signal output port 2, and the like.

Optionally, the preset rule may include a mapping relationship between the generated detection signal and multiple signal output ports determined according to the received cable detection indication. For example, the received cable detection instruction includes an instruction to output the generated signal with a duty cycle of 20% from the signal output port 1, and output the generated signal with a duty cycle of 30% from the signal output port 2, and the like. .

Optionally, the preset rule may include determining the output port of the detection signal according to the correlation between the signal and the output port when the RAID card outputs the generated detection signal from the corresponding signal output port for the first time. For example, for the first time in RAID card 1, the detection signals with a duty ratio of 20% and 30% are output from the signal output port 1 and the signal output port 2 respectively, and then the detection signals with a duty ratio of 20% and 30% are outputted again. Output from signal output port 1 and signal output port 2 respectively.

Specifically, each signal output port of the RAID card is connected to a connector port through a cable, and the connector port receives the detection signal sent by the RAID card and transmits it to the backplane processor.

Step 205: The backplane processor analyzes each received detection signal to obtain an analysis result, where the analysis result includes preset label information of the detection signal received by each connector port.

Optionally, if the detection signal is a signal with different duty ratios, the preset label information of the detection signal obtained by the backplane processor analysis may be the duty cycle of the detection signal.

Optionally, if the detection signals are signals with different frequencies, the preset flag information of the detection signals obtained by the analysis of the backplane processor may be the frequency of the detection signals.

Optionally, if the detection signal is a serial data signal with different number of bits, the preset flag information of the detection signal obtained by parsing by the backplane processor may be the number of bits of the detection signal.

Optionally, if the detection signal is a random number, the preset marking information of the detection signal obtained by the backplane processor by parsing may be the random number.

The preset flag information of the detected detection signal is determined according to the actual situation, which is not limited in this solution. For ease of understanding, the following description takes the detection signal as a square wave signal with different duty ratios as an example.

Example 2. Based on the description of Example 1, the backplane processor receives the 4-channel detection signals of the above-mentioned RAID card 1 and RAID card 2 through 4 connector ports. Assume that the port 1, port 2, port 3, and port 4 of the four connector ports are respectively connected to the signal output port 1 of the RAID card 1, the signal output port 2 of the RAID card 1, the signal output port 1 of the RAID card 2, and the RAID card 2 signal output port 2 cable connection. The signals output by RAID card 1 from its own signal output port 1 and signal output port 2 are square wave signals with a duty cycle of 20% and 30% respectively; RAID card 2 outputs from its own signal output port 1 and signal output port 2 The signals are square wave signals with a duty cycle of 40% and 50%, respectively.

Then, the detection signals received by port 1, port 2, port 3 and port 4 of the connector are square wave signals with a duty cycle of 20%, a duty cycle of 30%, a duty cycle of 40% and a duty cycle of 50%, respectively. . Then, the preset tag information parsed after the backplane processor acquires the detection signal from port 1 is 20%, the preset tag information parsed after the backplane processor acquires the detection signal from port 2 is 30%, and the backplane The preset marking information parsed after the processor obtains the detection signal from port 3 is 40%, and the preset marking information parsed after the backplane processor obtains the detection signal from port 4 is 50%.

The preset marking information of the detection signal obtained by the analysis of the backplane processor can be used by the BMC to detect whether the cable between the port of the RAID card and the port of the connector is correctly inserted. For the specific implementation process, refer to steps 206 to 206. 209.

Step 206 , the backplane processor sends the analysis result and the corresponding relationship information between each preset mark information and the connector interface to the mainboard processor.

Step 207: The mainboard processor stores the parsing result into a preset address in the register according to the correspondence information.

Specifically, the register may be a register of the mainboard processor, and the register may interact with the BMC. The preset address in the register is an address pre-configured for storing the above analysis result, where the analysis result includes a preset marking information address of the detection signal sent by the RAID card. The preset address includes a plurality of storage addresses, and each storage address is used to store preset marker information of a detection signal. Moreover, there is a one-to-one mapping relationship between the plurality of storage addresses and the connector ports. That is, which specific storage address is used to store the preset flag information of the detection signal received by which connector port is pre-set. For ease of understanding, examples are given below.

Example 3: Based on the description of the above example 2, the backplane processor sends the preset marking information 20%, 30%, 40% and 50% of the detected signal obtained by analysis to the mainboard processor. At the same time, the information that 20% is associated with the aforementioned port 1, 30% is associated with the aforementioned port 2, 40% is associated with the aforementioned port 3, and 50% is associated with the aforementioned port 4 is sent to the motherboard processor together.

It is assumed that the above preset address includes four storage addresses, which are address 1, address 2, address 3 and address 4, respectively. Moreover, address 1 is preconfigured for storing the preset tag information of the detection signal received by port 1, address 2 is used for storing the preset tag information of the detection signal received by port 2, and address 3 is used for storing the preset tag information of the detection signal received by port 3. The preset flag information of the detection signal and the address 4 are used to store the preset flag information of the detection signal received by the port 4 . Then, after receiving the information sent by the backplane processor, the mainboard processor stores 20%, 30%, 40% and 50% in address 1, address 2, address 3 and address 4 respectively according to the information. For the information in the preset address after storage, see Table 1, for example.

Table 1

Address 1 address 2 address 3 address 4 20% 30% 40% 50%

Step 208: The mainboard processor sends the parsing result stored in the preset address of the register to the BMC.

Step 209: The BMC compares the analysis result stored in the preset address of the register with the preset value to determine whether the cable between the port of the RAID card and the port of the connector is correctly inserted.

The preset value includes preset flag information of the detection signal stored in the preset address under the condition that the cables between the port of the RAID card and the multiple connector ports are correctly inserted.

Specifically, the preset value may be preset by the BMC. When detecting whether the cable between the port of the RAID card and the connector port is connected for the first time, the BMC sets the detection signal analysis result stored in the preset address by the motherboard processor as the preset value of the preset address. That is, the BMC sets the first one-to-one connection between the RAID card port and the connector port as the correct connection, and every subsequent detection must be the same as the first connection to be correctly connected, otherwise the connection is correct. error. That is, as long as the analysis result of the detection signal stored in the preset address is consistent with the preset value in each subsequent detection, it indicates that the cable between the RAID card port and the connector port is correctly inserted, Otherwise the connection is wrong. For ease of understanding, examples are given below.

Example 4, based on the description of the above example 3, it is assumed that the cables between the signal output ports and the connector ports of the RAID card 1 and the RAID card 2 in the above example 3 are connected for the first time. Then, the BMC receives the preset flag information (for example, the information in Table 1) stored in the preset address of the register sent by the motherboard processor, and then sets the received information as the preset value in the preset address. That is to say, among the four default connector ports of the BMC, port 1, port 2, port 3, and port 4 correspond to the signal output port 1 of RAID card 1, the signal output port 2 of RAID card 1, and the signal output port of RAID card 2, respectively. 1. The signal output port 2 of the RAID card 2 is connected to the correct connection in this connection situation. In the future cable detection, it must be ensured that this connection is the correct connection, otherwise the connection is wrong.

After the BMC sets the preset flag information of the detection signal stored in the preset address by the motherboard processor for the first time to the preset value in the preset address, each time the cable is detected, the BMC will retrieve the data from the motherboard processor register. The analysis result of the detection signal obtained from the preset address of , is compared with the preset value in the preset address, and if the two pieces of information match, the cable connection is correct. If the two information do not match exactly, the cable is in error. Optionally, the BMC may determine a cable insertion error between the corresponding RAID card port and the connector port according to which preset address information among the preset addresses does not match. For ease of understanding, examples are given below.

Example 5, based on the descriptions of the above examples 3 and 4, it is assumed that Table 1 is the preset information in the preset address in the register stored in the BMC. Then, if in the process of a cable detection, the preset marking information of the detection signal stored in the preset address of the register by the motherboard processor is consistent with that in Table 1, which is 20%, 30%, 40% and 50% respectively Store to address 1, address 2, address 3 and address 4. Well, this indicates that the cables between the ports of RAID card 1 and 2 and the connector ports of the hard disk backplane are plugged in correctly.

If during a cable detection process, the preset flag information of the detection signal stored in the preset address of the register by the motherboard processor is shown in Table 2. Comparing Table 2 and Table 1, it can be seen that the information in Address 1 and Address 2 of Table 2 is inconsistent with that in Table 1, which indicates that the cables of the connector ports corresponding to Address 1 and Address 2 are inserted incorrectly. According to example 2 and example 3, address 1 and address 2 are respectively associated with connector port 1 and port 2. In the case of correct connection, port 1 and port 2 are respectively connected to the signal output port 1 of RAID card 1 and the signal output port of RAID card 1. Signal output port 2. Therefore, the BMC can determine the cable insertion error between port 1 and the signal output port 1 of the RAID card 1, and the cable insertion error between the port 2 and the signal output port 2 of the RAID card 1 through the information.

Table 2

Address 1 address 2 address 3 address 4 30% 20% 40% 50%

In a possible implementation manner, the BMC may detect the cable between each of the N RAID cards and the connector of the hard disk backplane in a polling detection manner. For example, the cable between the j-th RAID card and the connector of the hard disk backplane can be detected first, and then the cable between the j+1-th RAID card and the connector of the hard disk backplane can be detected. , until the cables between the N RAID cards and the connectors on the hard disk backplane are detected. Among them, the value of j is from 1 to N-1.

It should be noted that since the cables of the RAID card are detected one by one, the analysis result of the detection signal finally stored in the preset address of the register can be the analysis result of the detection signal sent by a RAID card, and then the BMC The parsing result is compared with a preset value corresponding to the preset address where the parsing result of the detection signal is stored to determine whether the cable of the RAID card is correctly inserted. In addition, the specific implementation process for the BMC to detect the cable between each RAID card and the connector of the hard disk backplane in turn may refer to the embodiment described in FIG. 2 above, which will not be repeated here.

In summary, the baseboard management controller (BMC) controls the RAID card to generate different detection signals to detect whether the cable insertion between the RAID card and the connector is correct, realizes the automatic cable insertion detection, and improves the cable connection. Detection efficiency and accuracy. In the embodiment of the present application, it is not necessary to pre-set preset values of various plug-in modes and preset alarm information of various plug-in modes in the BMC, which saves manpower and material costs, and also saves the occupation of storage resources in the BMC. In addition, the baseboard management controller BMC controls the RAID card to generate different detection signals to detect whether the cable between the RAID card and the connector is correctly inserted. The cable detection can be completed when the server is powered on, that is, The detection is done during the system initialization phase, so that it does not affect the production time. In addition, the embodiments of the present application do not depend on some drivers (eg, firmware (firmware) versions), support flexible plugging and adaptation of RAID cards, and reduce the complexity of the solution.

The foregoing mainly introduces the cable insertion detection method provided by the embodiment of the present application from the perspective of interaction between a baseboard management controller, a redundant array of independent hard disk RAID card, a backplane processor, and a mainboard processor. It can be understood that, in order to implement the above-mentioned functions, each device includes corresponding hardware structures and/or software modules for performing each function. Those skilled in the art should easily realize that the present application can be implemented in hardware or in the form of a combination of hardware and computer software, in conjunction with the device and method steps of each example described in the embodiments disclosed herein. Whether a function is performed by hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Skilled artisans may implement the described functionality using different methods for each particular application, but such implementations should not be considered beyond the scope of this application.

In this embodiment of the present application, functional modules may be divided for each of the above devices, such as a baseboard management controller, a RAID card, etc., according to the above method examples. For example, each functional module may be divided corresponding to each function, or two or more The functions are integrated in a processing module. The above-mentioned integrated modules can be implemented in the form of hardware, and can also be implemented in the form of software function modules. It should be noted that, the division of modules in the embodiments of the present application is schematic, and is only a logical function division, and there may be other division manners in actual implementation.

In the case where each functional module is divided according to each function, the baseboard management controller involved in the above embodiment includes a unit for performing the operations performed by the BMC in the method embodiment shown in FIG. 2 . FIG. 3 shows a schematic diagram of a possible logical structure of the baseboard management controller involved in the above embodiment. The baseboard management controller 300 includes: a sending unit 301 and a receiving unit 302 (the receiving unit 302 may be referred to as an obtaining unit 302 ) and the comparison unit 303 . The sending unit 301 may be configured to execute the operation steps of sending information by the baseboard management controller in the method embodiment shown in FIG. 2; the receiving unit 302 or the obtaining unit 302 may be configured to execute the method embodiment shown in FIG. 2. The operation steps for the baseboard management controller to receive information, and the like; the comparison unit 303 may be configured to perform the operation steps for the baseboard management controller to perform information comparison in the method embodiment shown in FIG. 2 as described above, and so on.

It should be noted that the baseboard management controller 300 shown in FIG. 3 is only an implementation manner of the embodiment of the present application. In practical applications, the baseboard management controller 300 may further include more or less components, which is not limited here. . For the specific implementation of the baseboard management controller 300, reference may be made to the relevant descriptions in the foregoing method embodiment shown in FIG. 2, and details are not described herein again.

In the case where each functional module is divided according to each function, the redundant array of independent disks RAID card involved in the above embodiment includes a unit for performing the operations performed by the RAID card in the method embodiment shown in FIG. 2 . FIG. 4 shows a schematic diagram of a possible logical structure of the redundant array of independent disks involved in the above embodiment. The redundant array of independent disks 400 includes a receiving unit 401 , a generating unit 402 and a sending unit 403 . Wherein, the receiving unit 401 may be configured to perform the operation steps of receiving information by the RAID card in the method embodiment shown in FIG. 2; The operation steps, etc.; the sending unit 404 may be configured to perform the operation steps and the like of the RAID card sending the detection signal in the method embodiment shown in the foregoing FIG. 2 .

It should be noted that the redundant array of independent disks 400 shown in FIG. 4 is only an implementation manner of the embodiment of the present application. In practical applications, the redundant array of independent disks 400 may also include more or less components. No restrictions apply. For the specific implementation of the redundant array of independent disks 400, reference may be made to the relevant descriptions in the foregoing method embodiment shown in FIG. 2, and details are not repeated here.

In the case where each functional module is divided corresponding to each function, FIG. 5 is a schematic diagram of a possible logical structure of the above-mentioned motherboard. The motherboard 500 includes:

The first sending unit 501 is configured to send a cable detection instruction to the RAID card; the cable detection instruction is used to instruct the RAID card to detect the connection status of the cable between the RAID card and the hard disk backplane;

a receiving unit 502, configured to receive the cable detection indication;

a generating unit 503, configured to generate a detection signal of a preset mark according to the cable detection instruction according to a preset rule;

The second sending unit 504 is configured to send the detection signal to the hard disk backplane;

an obtaining unit 505, configured to obtain the parsing result;

The comparing unit 506 is configured to compare and confirm the plug-in state of the cable according to the analysis result and a preset value, wherein the analysis result is obtained by analyzing the detection signal by the hard disk backplane.

In a possible implementation manner, multiple RAID cards are inserted into the multiple slots of the mainboard 500; the cable detection indication is the sorting information of the slots into which the RAID is inserted; the sorting information is the sorting information for the multiple slots. obtained after sorting the slots.

In another possible implementation manner, the hard disk backplane receives the detection signal through a plurality of connector ports;

The above obtaining unit 505 is specifically configured to obtain the above analysis result stored in the preset address of the register.

Specifically, the preset address includes a plurality of storage addresses, and the plurality of storage addresses are mapped one-to-one with the above-mentioned plurality of connector ports; each address of the plurality of storage addresses is used to store an analysis result of a detection signal; The analysis result stored in one address is the result analyzed by the backplane processor of the hard disk backplane according to the detection signal received by the connector port of each address mapping.

In another possible implementation manner, the above-mentioned comparison unit 506 is further configured to analyze the analysis obtained from the preset address of the register when the cable insertion detection between the above-mentioned RAID card and the hard disk backplane is initiated for the first time. The result is set as a preset value; wherein, the preset value includes a result parsed for the first time by the backplane processor of the hard disk backplane according to the detection signals received by the plurality of connector ports.

The present application further provides a server, which includes the baseboard management controller 300 described in FIG. 3 and the redundant array of independent disks 400 described in FIG. 4 . Alternatively, the server includes the motherboard 500 described in FIG. 5 above. For brevity, details are not repeated here.

FIG. 6 is a schematic diagram of a possible hardware structure of the baseboard management controller involved in the above embodiment. The baseboard management controller 600 includes: a processor 601 , a memory 602 and a communication port 603 . The processor 601 , the communication port 603 , and the memory 602 may be connected to each other or to each other through a bus 604 .

Exemplarily, the memory 602 is used to store computer programs and data of the baseboard management controller 600. The memory 602 may include, but is not limited to, random access memory (RAM), read-only memory (ROM). ), erasable programmable read only memory (EPROM) or portable read-only memory (compact disc read-only memory, CD-ROM), etc. The communication port 603 is used to support the baseboard management controller 600 to communicate, such as receiving or sending data.

Illustratively, the processor 601 may be a CPU, a complex programmable logic device, a general-purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, a transistor logic device, a hardware component, or the like. random combination. A processor may also be a combination that performs computing functions, such as a combination comprising one or more microprocessors, a combination of a digital signal processor and a microprocessor, and the like. The processor 601 may be configured to read the program stored in the above-mentioned memory 602, and execute the operations implemented by the baseboard management controller in the method described in the above-mentioned FIG. 2 and possible embodiments.

It should be noted that the baseboard management controller 600 shown in FIG. 6 is only an implementation manner of the embodiment of the present application. In practical applications, the baseboard management controller 600 may further include more or less components, which is not limited here. . In addition, the baseboard management controller 600 may correspond to the baseboard management controller 300 in the embodiment of the present application, and may correspondingly execute the corresponding subject according to the method shown in FIG. 2 in the embodiment of the present application, and each module in the baseboard management controller 600 and other operations and/or functions are respectively in order to implement the corresponding flow of each method in FIG. 2 , and are not repeated here for brevity.

FIG. 7 is a schematic diagram of a possible hardware structure of the redundant array of independent disks involved in the above embodiment. The redundant array of independent disks 700 includes: a processor 701 , a memory 702 and a communication port 703 . The processor 701 , the communication port 703 , and the memory 702 may be connected to each other or to each other through a bus 704 .

Exemplarily, the memory 702 is used to store computer programs and data of the redundant array of independent disks 700, and the memory 702 may include, but is not limited to, random access memory RAM, read only memory ROM, erasable programmable read only memory EPROM or Portable Read Only Memory CD-ROM, etc. The communication port 703 is used to support the redundant array of independent disks 700 to communicate, such as to receive or transmit data.

Illustratively, the processor 701 may be a CPU, a complex programmable logic device, a general-purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, a transistor logic device, a hardware component, or the like. random combination. A processor may also be a combination that performs computing functions, such as a combination comprising one or more microprocessors, a combination of a digital signal processor and a microprocessor, and the like. The processor 701 can be configured to read the program stored in the above-mentioned memory 702, and execute the operations implemented by the redundant array of independent disks in the method described in the above-mentioned FIG. 2 and possible embodiments.

It should be noted that the redundant array of independent disks 700 shown in FIG. 7 is only an implementation manner of the embodiment of the present application. In practical applications, the redundant array of independent disks 700 may also include more or less components. No restrictions apply. In addition, the redundant array of independent disks 700 may correspond to the redundant array of independent disks 400 in the embodiment of the present application, and may correspondingly execute the corresponding subject in the method shown in FIG. 2 in the embodiment of the present application, and the redundant array of independent disks 700 Each module and other operations and/or functions in FIG. 2 are intended to implement the corresponding flow of each method in FIG. 2 , and are not repeated here for brevity.

An embodiment of the present application further provides a cable detection device, which includes a baseboard management controller BMC and a redundant array of independent disks RAID card; wherein the BMC may be the baseboard management controller described in FIG. 6 , The RAID card may be the redundant array of independent disks described in FIG. 7 above. Optionally, the device may be the motherboard of the above-mentioned server.

The present application discloses a server, which includes a main board and a hard disk backplane, and the main board includes a baseboard management controller BMC and a redundant array of independent disks RAID card. The BMC and the RAID card are connected through slots; the hard disk backplane includes a plurality of connectors; the ports of the RAID card are connected to the plurality of connector ports one-to-one by cables. Optionally, the server may be the server 100 shown in FIG. 1 .

The above embodiments may be implemented in whole or in part by software, hardware, firmware or any other combination. When implemented in software, the above-described embodiments may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded or executed on a computer, all or part of the processes or functions described in the embodiments of the present application are generated. The computer may be a general purpose computer, special purpose computer, computer network, or other programmable device. The computer instructions may be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be downloaded from a website site, computer, server, or data center Transmission to another website site, computer, server, or data center is by wire (eg, coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (eg, infrared, wireless, microwave, etc.). The computer-readable storage medium may be any available medium that a computer can access, or a data storage device such as a server, a data center, or the like containing one or more sets of available media. The usable media may be magnetic media (eg, floppy disks, hard disks, magnetic tapes), optical media (eg, DVDs), or semiconductor media. The semiconductor medium may be a solid state drive (SSD).

To sum up, in this application, the baseboard management controller BMC controls the RAID card to generate different detection signals to detect whether the cable between the RAID card and the connector is correctly inserted, thereby realizing automatic cable detection. It improves the efficiency and accuracy of cable detection and saves manpower and material costs.

The above descriptions are merely specific embodiments of the present application. Those skilled in the art can think of changes or substitutions based on the specific embodiments provided by the present application, which should all fall within the protection scope of the present application.

Claims (9)

1. A cable plugging detection method, the method is applied to a server, the server comprises a mainboard and a hard disk backplane, and the mainboard includes a baseboard management controller BMC and an independent hard disk redundant array RAID card, the BMC connected with the RAID card through a slot; the hard disk backplane includes a plurality of connectors; the ports of the RAID card and the plurality of connector ports are connected one-to-one by cables; it is characterized in that the Methods include: The BMC is used to send a cable detection instruction to the RAID card; the cable detection instruction is used to instruct the RAID card to detect the connection status of the cable between the RAID card and the hard disk backplane; the RAID card, configured to receive the cable detection instruction, and generate a detection signal with a preset mark according to a preset rule according to the cable detection instruction; send the detection signal to the hard disk backplane; The BMC obtains the analysis result stored in the preset address of the register, wherein the preset address includes multiple storage addresses, and the multiple storage addresses are mapped one-to-one with the multiple connector ports; Each address in the storage address is used to store the analysis result of a detection signal; the analysis result stored in each address is the detection received by the backplane processor of the hard disk backplane according to the connector port mapped by each address The result parsed by the signal; The BMC compares the analysis result with a preset value to confirm the connection relationship of the cables between the ports of the RAID card and the plurality of connector ports. 2 . The method according to claim 1 , wherein the slot is a standard PCIe slot for fast peripheral component interconnection, an internal integrated circuit I2C slot, or a serial general-purpose input and output (SGPIO) slot. 3 . 3. The method according to claim 2, wherein the slot is any one of multiple slots in the motherboard for connecting multiple RAID cards; the cable detection indication is the Sorting information of the slots; the sorting information is obtained after sorting the multiple slots by the BMC. 4. The method according to any one of claims 1 to 3, wherein the case where the port of the RAID card and the plurality of connector ports are connected one-to-one by cables for the first time is that the cables are correctly inserted Case; The BMC is further configured to set the analysis result obtained from the preset address of the register as a preset value when the BMC initiates the detection of the cable plugging for the first time; wherein the preset value from the register The parsing result obtained in the address includes the result parsed for the first time by the backplane processor of the hard disk backplane according to the detection signals received by the plurality of connector ports. 5. A mainboard, characterized in that, the mainboard comprises a baseboard management controller BMC and a redundant array of independent hard disk RAID card, and the BMC and the RAID card are connected through a slot; the port of the RAID card is backed by the hard disk. Multiple connector ports of the board are connected one-to-one by cables; The BMC includes a first sending unit configured to send a cable detection instruction to the RAID card; the cable detection instruction is used to instruct the RAID card to detect cables between the RAID card and multiple connectors of the hard disk backplane connection status; The RAID card includes a receiving unit for receiving the cable detection indication; The RAID card further includes a generating unit, configured to generate a detection signal with a preset mark according to the cable detection instruction according to a preset rule; The RAID card further includes a second sending unit for sending the detection signal to the hard disk backplane; The BMC also includes an obtaining unit for obtaining the analysis result stored in the preset address of the register, wherein the preset address includes multiple storage addresses, and the multiple storage addresses are one with the multiple connector ports. A mapping; each of the plurality of storage addresses is used to store an analysis result of a detection signal; the analysis result stored in each address is the backplane processor of the hard disk backplane mapping according to each address The result parsed by the detection signal received by the connector port of ; The BMC further includes a comparison unit, configured to compare and confirm the cable connection relationship between the port of the RAID card and the plurality of connector ports according to the analysis result and a preset value. 6 . The motherboard according to claim 5 , wherein the cable detection indication is sorting information of slots to which the RAID is inserted; and the sorting information is obtained after sorting a plurality of slots. 7 . 7. mainboard according to claim 5 or 6, is characterized in that, The comparison unit is further configured to set the parsing result obtained from the preset address of the register as a preset value when the cable insertion detection is initiated for the first time; wherein the preset value includes the hard disk The backplane processor of the backplane parses the result for the first time according to the detection signals received by the plurality of connector ports. 8. A server for cable detection, the server comprises a mainboard and a hard disk backplane, the mainboard includes a baseboard management controller BMC and an independent hard disk redundant array RAID card, and the BMC and the RAID card pass through a slot connection; the hard disk backplane includes a plurality of connectors; the ports of the RAID card and the plurality of connector ports are connected one-to-one by cables; the BMC and the RAID card are respectively used to execute the Operation steps performed by the BMC and the RAID card in any of the methods described in claims 1 to 4. 9. A computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and the computer program is executed by a processor to implement the operation steps of the method according to any one of claims 1 to 4 .

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