CN115421580A - Server power failure monitoring device and method - Google Patents

Abstract

The invention relates to the field of server monitoring, and particularly discloses a server power failure monitoring device and a method, wherein a power module comprises the following components: the system comprises a plurality of power supply units and at least one redundant power supply unit; a fault monitoring module: the method comprises the steps of obtaining the state of each power supply unit, judging whether the power supply unit fails according to the state of each power supply unit, sending failure information to a failure processing module when the power supply unit fails, and controlling the redundant power supply unit to be started; a fault processing module: and receiving the fault information, analyzing and outputting and displaying the fault information at the front end of the server operating system. The power supply module is monitored by the fault monitoring module in real time, when the power supply unit fails, the redundant power supply unit is automatically controlled to be started, the power supply stability of the system and the stable operation of the service are improved, and meanwhile, the fault processing module is informed to display fault information at the front end, so that the troubleshooting efficiency of the power supply failure is effectively improved.

Description

Server power failure monitoring device and method

Technical Field

The invention relates to the field of server monitoring, in particular to a server power failure monitoring device and method.

Background

In the switch product, a Power Supply Unit (PSU) is used as an electric junction of the whole equipment, and the stability of power supply is related to

The input and output of the power supply need to be monitored in real time for the forwarding of service data and the normal operation of the system. Meanwhile, in the existing switch product, in order to ensure the stability of power supply and prevent the occurrence of a fault power supply, a power supply module mostly adopts a redundancy design, such as n +1 redundancy, n + n redundancy and the like; therefore, when a fault occurs, it is very important to find a method for troubleshooting the faulty power supply and turning on the standby power supply in time.

However, in the existing switch system, on one hand, the troubleshooting of the fault power supply needs to enter the back end of the BMC, and no fault information is output from the front-end operation interface; on the other hand, a real-time automatic starting method for the redundant power supply is lacked, and when a certain power supply fails and the redundant power supply is not started, the power supply of the system is easy to fluctuate, so that the stable operation of the system is influenced.

Disclosure of Invention

In order to solve the problems, the invention provides a server power failure monitoring device and a server power failure monitoring method, which are used for realizing efficient troubleshooting of a failure power supply and automatic starting of a redundant power supply.

In a first aspect, an embodiment of the present invention provides a server power failure monitoring apparatus, including,

a power supply module: the power supply system comprises a plurality of power supply units and at least one redundant power supply unit;

a fault monitoring module: the method comprises the steps of obtaining the state of each power supply unit, judging whether the power supply unit fails according to the state of each power supply unit, sending failure information to a failure processing module when the power supply unit fails, and controlling the redundant power supply unit to be started;

a fault processing module: and receiving the fault information, analyzing and outputting and displaying the fault information at the front end of the server operating system.

Further, the power supply unit state acquired by the fault monitoring module includes an alternating current input state and a direct current output state of the power supply unit;

when the AC input state and/or the DC output state of the power supply unit are abnormal, the fault of the power supply unit is indicated.

Further, the AC input state of the power supply unit obtained by the fault monitoring module is represented as DATA1= [ AC1_ OK, AC2_ OK, \8230, ACn _ OK ], and the DC output state of the power supply unit is represented as DATA2= [ DC1_ OK, DC2_ OK, \8230, DCn _ OK ], where n power supply units are all, ACi _ OK =0 indicates that the AC input state of the ith power supply unit is abnormal, DCi _ OK =0 indicates that the DC output state of the ith power supply unit is abnormal, ACi _ OK =1 indicates that the AC input state of the ith power supply unit is normal, and DCi _ OK =1 indicates that the DC output state of the ith power supply unit is normal;

the fault monitoring module obtains an alternating current input processing state DATA4 of the power supply unit by performing bitwise XOR on an alternating current input state DATA1 of the power supply unit and a standard array DATA3= [00 \8230; 0 ]; wherein the standard array DATA3 has n bits in total;

the fault monitoring module obtains a direct current output processing state DATA5 of the power supply unit by performing bitwise XOR on a direct current output state DATA2 of the power supply unit and a standard array DATA3= [00 \82300 ];

the fault monitoring module comprises a first data block, a second data block, a fourth data block and a fifth data block;

the first DATA block is used to store the ac input state DATA1 of the power supply unit;

the second DATA block is used for storing the DC output state DATA2 of the power supply unit;

the fourth DATA block is used for storing the ac input processing state DATA4 of the power supply unit;

the fifth DATA block is used to store the dc output processing state DATA5 of the power supply unit.

Further, the fault monitoring module judges whether a power supply unit fault exists according to the state of each power supply unit, and specifically comprises the following steps:

and judging whether each bit of the DATA4 and the DATA5 is 1, if so, judging that no power supply unit fails, otherwise, judging that the power supply unit fails and the power supply unit corresponding to the bit of 0 fails.

Furthermore, the fault monitoring module is connected with a starting pin of the redundant power supply unit, and when the power supply unit fails, the fault monitoring module pulls down the starting pin of the redundant power supply unit to start the redundant power supply unit.

Further, the device also comprises a front panel indicator light;

and after the fault processing module receives the fault information, the indicating state of the front panel indicating lamp is controlled according to the fault information.

Furthermore, the fault monitoring module is a CPLD module, and the fault processing module is a BMC module.

In a second aspect, a technical solution of the present invention provides a server power failure monitoring method, including the following steps:

acquiring the state of each power supply unit;

judging whether a power supply unit fails according to the state of each power supply unit;

if the power supply unit fails, the failure information is output and displayed at the front end of the server operating system, and meanwhile, the redundant power supply unit is controlled to be started.

Further, the acquired power supply unit state comprises an alternating current input state and a direct current output state of the power supply unit;

the AC input state of the power supply unit is represented as DATA1= [ AC1_ OK, AC2_ OK, \8230;, ACn _ OK ], the DC output state of the power supply unit is represented as DATA2= [ DC1_ OK, DC2_ OK, \8230;, DCn _ OK ], n power supply units in total, ACi _ OK =0 represents that the AC input state of the ith power supply unit is abnormal, DCi _ OK =0 represents that the DC output state of the ith power supply unit is abnormal, ACi _ OK =1 represents that the AC input state of the ith power supply unit is normal, and DCi _ OK =1 represents that the DC output state of the ith power supply unit is normal;

correspondingly, whether there is power supply unit trouble according to each power supply unit state judgement specifically includes:

obtaining an alternating current input processing state DATA4 of the power supply unit by carrying out bitwise XOR on the alternating current input state DATA1 of the power supply unit and a standard array DATA3= [00 \82300 ]; wherein the standard array DATA3 has n bits in total;

obtaining a direct current output processing state DATA5 of the power supply unit by carrying out bitwise XOR on the direct current output state DATA2 of the power supply unit and a standard array DATA3= [00 \82300 ];

and judging whether each bit of the DATA4 and the DATA5 is 1, if so, judging that no power supply unit fails, otherwise, judging that the power supply unit fails and the power supply unit corresponding to the bit of 0 fails.

Further, the method further comprises:

and when the power supply unit has a fault, the indicating state of the front panel indicating lamp is controlled according to the fault information.

Compared with the prior art, the server power failure monitoring device and method provided by the invention have the following beneficial effects: the power supply module is monitored by the fault monitoring module in real time, when the power supply unit fails, the redundant power supply unit is automatically controlled to be started, the power supply stability of the system and the stable operation of services are improved, meanwhile, the fault processing module is informed to display fault information at the front end, and the troubleshooting efficiency of power supply faults is effectively improved.

Drawings

For a clearer explanation of the embodiments or technical solutions of the prior art of the present application, the drawings needed for the description of the embodiments or prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic block diagram of a server power failure monitoring apparatus according to an embodiment of the present invention.

Fig. 2 is a schematic structural diagram of a server power failure monitoring apparatus according to an embodiment of the present invention.

Fig. 3 is a schematic workflow diagram of the embodiment shown in fig. 2.

Fig. 4 is a schematic flowchart of a server power failure monitoring method according to an embodiment of the present invention.

Detailed Description

Some terms related to the present invention are explained below.

LED: light Emitting Diode.

BMC: a Basebard Management Controller, a Baseboard Management Controller.

CPLD: complex Programmable Logic Device.

PSU: power Supply Unit, power Supply Unit.

1 and 0: high and low levels are represented in the digital circuit.

In order that those skilled in the art will better understand the disclosure, the following detailed description will be given with reference to the accompanying drawings. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Fig. 1 is a schematic block diagram of a server power failure monitoring apparatus according to an embodiment of the present invention, and as shown in fig. 1, the apparatus includes: the device comprises a power supply module, a fault monitoring module and a fault processing module.

A power supply module: comprises a plurality of power supply units and at least one redundant power supply unit.

The power supply unit of the server generally adopts PSU, and adopts redundancy designs of 1+1 redundancy, n + n and the like.

A fault monitoring module: the method comprises the steps of obtaining the state of each power supply unit, judging whether the power supply unit fails according to the state of each power supply unit, sending failure information to a failure processing module when the power supply unit fails, and controlling the redundant power supply unit to be started.

The fault monitoring module collects the state of each power supply unit in real time, judges whether a power failure occurs, immediately controls the redundant power supply unit to be started once the power failure occurs, avoids causing power supply fluctuation, and ensures the stability of power supply and operation of the system.

A fault processing module: and receiving the fault information, analyzing and outputting and displaying the fault information at the front end of the server operating system.

The fault monitoring module transmits the fault information to the fault processing module, the fault processing module can analyze the fault information, then fault data are output and displayed at the front end of the operating system, the back end is not required to be checked, and the checking efficiency of the power supply fault is effectively improved.

According to the server power failure monitoring device provided by the embodiment of the invention, the power module is monitored by the failure monitoring module in real time, when the power supply unit fails, the redundant power supply unit is automatically controlled to be started, the power supply stability of the system and the stable operation of services are improved, and meanwhile, the failure processing module is informed to display failure information at the front end, so that the troubleshooting efficiency of power failures is effectively improved.

In this embodiment, the fault monitoring module obtains the state of the power supply unit to determine whether the power supply unit fails, as a preferred embodiment, the state of the power supply unit obtained by the fault monitoring module includes an ac input state and a dc output state of the power supply unit, and an abnormality occurs in any one of the two states, that is, the abnormality indicates that the corresponding power supply unit fails.

In order to improve the fault detection efficiency, the fault monitoring module uses 0 and 1 marks for the states of the power supply units and carries out bitwise exclusive-or operation to detect whether the power supply units have faults or not. Specifically, the AC input state of the power supply unit acquired by the fault monitoring module is represented by DATA1= [ AC1_ OK, AC2_ OK, \8230;, ACn _ OK ], and the DC output state of the power supply unit is represented by DATA2= [ DC1_ OK, DC2_ OK, \8230;, DCn _ OK ], where n power supply units are total, ACi _ OK =0 indicates that the AC input state of the ith power supply unit is abnormal, DCi _ OK =0 indicates that the DC output state of the ith power supply unit is abnormal, ACi _ OK =1 indicates that the AC input state of the ith power supply unit is normal, and DCi _ OK =1 indicates that the DC output state of the ith power supply unit is normal.

The fault monitoring module obtains the AC input processing state DATA4 of the power supply unit by performing bitwise XOR on the AC input state DATA1 of the power supply unit and a standard array DATA3= [00 \8230; 0 ]. The standard array DATA3 has n bits in total, i.e. there are several power supply units, and there are several bits in the standard array, and 1 bit corresponds to 1 power supply unit.

The fault monitoring module obtains the direct current output processing state DATA5 of the power supply unit by bitwise XOR of the direct current output state DATA2 of the power supply unit and a standard array DATA3= [00 \82300 ]; 0 ].

Correspondingly, the fault monitoring module is provided with a first data block, a second data block, a fourth data block and a fifth data block.

The first DATA block is used to store the ac input state DATA1 of the power supply unit; the second DATA block is used for storing the DC output state DATA2 of the power supply unit; the fourth DATA block is used for storing the ac input processing state DATA4 of the power supply unit; the fifth DATA block is used to store the dc output processing state DATA5 of the power supply unit.

Based on the above operation, the fault monitoring module determines whether each bit of DATA4 and DATA5 is 1, if so, no power supply unit fails, otherwise, a power supply unit fails, and the power supply unit corresponding to the bit of 0 fails.

And the fault monitoring module judges whether the power supply unit has a fault according to the operation result, and controls the redundant power supply unit to start when the fault of the power supply unit is judged. The fault monitoring module is connected with a starting pin (PSON pin) of the redundant power supply unit, and when the power supply unit has a fault, the fault monitoring module pulls down the starting pin of the redundant power supply unit to realize the starting of the redundant power supply unit.

On the basis of the above embodiment, as a preferred implementation manner, after the fault processing module receives the fault information, the fault information is displayed at the front end of the operating system, and the indication state of the front panel indicator light is controlled according to the fault information, so as to prompt the staff in time. Different flashing states of the indicator light can be controlled according to different fault information.

In a specific embodiment, the fault monitoring module may adopt a CPLD module, and the fault processing module adopts a BMC module.

To further understand the present invention, a specific embodiment is provided below to further explain the present invention in detail, fig. 2 is a schematic structural diagram of the specific embodiment, and as shown in fig. 2, the main module components of the specific embodiment include: the device comprises a power module, a CPLD module, a BMC module and an LED module.

(1) A power supply module: the power supply and the life line of the system are charged.

The current commonly used power module adopts redundancy designs of 1+1 redundancy, n + n and the like to ensure the stability of the system power

(2) A CPLD module: and is responsible for monitoring the PSU state and controlling the redundant power supply.

The method comprises the steps of obtaining an AC input state (AC _ OK), a DC output state (DC _ OK) and a remote on state (PSON _ N) of a power supply, and determining the operation state of a PSU according to an operation result through bitwise XOR and operation inside a CPLD. When the power supply fails, the CPLD reports the failure result to the BMC module, and the control signal PSON _ N remotely turns on the redundant power supply.

(3) A BMC module: and the system is responsible for receiving the power failure information sent by the CPLD in real time and outputting the failure information at the front end of the operating system. Meanwhile, according to different fault information, the LED of the front panel of the equipment is lightened.

(4) Front panel LED: according to different fault information, the BMC can light the LEDs to different colors, such as a yellow light which is normally on, a red light which is normally on, a yellow light which is 1hz in flickering, and a red light which is 1hz in flickering.

The working flow of the above embodiment is explained below with 3+1 power redundancy design as an example (3 power sources that are normally turned on +1 standby power sources that are not turned on), and fig. 3 is a schematic working flow diagram of the embodiment.

The first step is as follows: the CPLD acquires the input status (AC 1_ OK, AC2_ OK, AC3_ OK) and the output status (DC 1_ OK, DC2_ OK, DC3_ OK) of 3 PSUs in real time, and stores the DATA1 and DATA2, i.e., DATA1= [ AC1_ OK AC2_ OK AC3_ OK ] DATA2= [ DC1_ OK DC2_ OK DC3_ OK ], respectively. Acx _ OK = DCx _ OK =1, which represents that the input and output state of the PSUx is normal; acx _ OK = DCx _ OK =0, representing a PSUx input-output state anomaly, x ∈ [1,3].

The second step is that: DATA1 and DATA2 are bitwise xored with DATA3= [000] respectively, and the result is stored into DATA4 and DATA5 respectively, that is, DATA4= [ AC1_ ERR _ N AC2_ ERR _ N AC3_ ERR _ N ] DATA5= [ DC1_ ERR _ N DC2_ ERR _ N DC3_ ERR _ N ].

Thirdly, comparing the results of DATA4 and DATA5 and analyzing the DATA information, wherein the three situations are as follows:

(1) DATA4= DATA5 is all 1, i.e. DATA4= DATA5= [111], then it means that 3 PSU inputs and outputs are normal and all PSU modules are working normally.

(2) A 0 in DATA4, representing an AC input anomaly for a PSU, where the number and location of 0's indicates the number and location of PSU faults. For example, DATA4= [001] indicates that an AC input abnormality has occurred in PSU1 and PSU 2.

(3) A 0 in DATA5, representing a DC output anomaly for a PSU, where the number and location of 0's indicates the number and location of PSU failures. For example, DATA5= [001] indicates that a DC output abnormality has occurred in PSU1 and PSU 2.

The fourth step: and the CPLD reports the fault information to the BMC, gives a low level to the PSU4_ PSON signal, and starts the redundant power supply PSU4.

The fifth step: the BMC outputs fault information to the front end of the operating system and lights a system LED to prompt a worker that the PSU has a fault and needs to be immediately processed. The colors of the different LEDs represent different fault information, and 4 cases are as follows:

(1) The yellow light is normally on: a single PSU has an AC input fault;

(2) The red light is normally on: AC input faults occur to a plurality of PSUs;

(3) Yellow lamp 1hz flashing: a single PSU has a DC output fault;

(4) Red light 1hz blinking: a DC output fault occurs for a plurality of PSUs.

The foregoing describes in detail an embodiment of a server power failure monitoring apparatus, and based on the server power failure monitoring apparatus described in the foregoing embodiment, an embodiment of the present invention further provides a server power failure monitoring method corresponding to the apparatus.

Fig. 4 is a schematic flowchart of a server power failure monitoring method according to an embodiment of the present invention, and as shown in fig. 4, the method includes the following steps.

S1, acquiring the states of the power supply units.

And S2, judging whether the power supply unit has a fault or not according to the state of each power supply unit.

And S3, if the power supply unit fails, outputting and displaying failure information at the front end of the server operating system, and simultaneously controlling the redundant power supply unit to be started.

The power supply unit state acquired in step S1 includes an ac input state and a dc output state of the power supply unit.

Specifically, the AC input states of the power supply units are represented by DATA1= [ AC1_ OK, AC2_ OK, \8230;, ACn _ OK ], and the DC output states of the power supply units are represented by DATA2= [ DC1_ OK, DC2_ OK, \8230;, DCn _ OK ], and n power supply units in total, ACi _ OK =0 indicates that the AC input state of the ith power supply unit is abnormal, DCi _ OK =0 indicates that the DC output state of the ith power supply unit is abnormal, ACi _ OK =1 indicates that the AC input state of the ith power supply unit is normal, and DCi _ OK =1 indicates that the DC output state of the ith power supply unit is normal.

Correspondingly, the step S2 of determining whether there is a power supply unit fault according to the states of the power supply units specifically includes:

s201, performing bitwise XOR on the AC input state DATA1 of the power supply unit and a standard array DATA3= [00 \8230; 0] to obtain an AC input processing state DATA4 of the power supply unit; wherein the standard array DATA3 has n bits in total;

s202, performing bitwise XOR on the direct current output state DATA2 of the power supply unit and a standard array DATA3= [00 \8230; 0] to obtain a direct current output processing state DATA5 of the power supply unit;

and S203, judging whether each bit of DATA4 and DATA5 is 1, if so, judging that no power supply unit fails, otherwise, judging that a power supply unit fails and judging that the power supply unit corresponding to the bit of 0 fails.

In order to further improve the troubleshooting efficiency, the method also controls the indicating state of the front panel indicating lamp according to the fault information when the power supply unit has a fault.

The server power failure monitoring method of this embodiment is implemented based on the foregoing server power failure monitoring apparatus, and therefore, the specific implementation of this method can be seen in the foregoing embodiment section of the server power failure monitoring apparatus, and therefore, the specific implementation thereof may refer to the description of the corresponding respective embodiment sections, and is not described herein again.

In addition, since the server power failure monitoring method of this embodiment is implemented based on the foregoing server power failure monitoring apparatus, the role of the server power failure monitoring method corresponds to that of the foregoing apparatus, and is not described herein again.

The above disclosure is only for the preferred embodiments of the present invention, but the present invention is not limited thereto, and any non-inventive changes that can be made by those skilled in the art and several modifications and amendments made without departing from the principle of the present invention shall fall within the protection scope of the present invention.

Claims (10)

1. A server power failure monitoring device is characterized by comprising,

a power supply module: the power supply system comprises a plurality of power supply units and at least one redundant power supply unit;

a fault monitoring module: the method comprises the steps of acquiring the state of each power supply unit, judging whether the power supply unit fails according to the state of each power supply unit, sending failure information to a failure processing module when the power supply unit fails, and controlling the redundant power supply unit to be started;

a fault processing module: and receiving the fault information, analyzing and outputting and displaying the fault information at the front end of the server operating system.

2. The server power failure monitoring device according to claim 1, wherein the power supply unit status obtained by the failure monitoring module includes an ac input status and a dc output status of the power supply unit;

when the AC input state and/or the DC output state of the power supply unit are abnormal, the fault of the power supply unit is indicated.

3. The server power failure monitoring device according to claim 2, wherein the AC input states of the power supply units obtained by the failure monitoring module are denoted as DATA1= [ AC1_ OK, AC2_ OK, \8230;, ACn _ OK ], the DC output states of the power supply units are denoted as DATA2= [ DC1_ OK, DC2_ OK, \8230;, DCn _ OK ], a total of n power supply units, ACi _ OK =0 denotes that the AC input state of the ith power supply unit is abnormal, DCi _ OK =0 denotes that the DC output state of the ith power supply unit is abnormal, ACi _ OK =1 denotes that the AC input state of the ith power supply unit is normal, and DCi _ OK =1 denotes that the DC output state of the ith power supply unit is normal;

the fault monitoring module obtains an alternating current input processing state DATA4 of the power supply unit by performing bitwise XOR on an alternating current input state DATA1 of the power supply unit and a standard array DATA3= [00 \8230; 0 ]; wherein the standard array DATA3 has n bits in total;

the fault monitoring module obtains a direct current output processing state DATA5 of the power supply unit by performing bitwise XOR on a direct current output state DATA2 of the power supply unit and a standard array DATA3= [00 \82300 ];

the fault monitoring module comprises a first data block, a second data block, a fourth data block and a fifth data block;

the first DATA block is used to store the ac input state DATA1 of the power supply unit;

the second DATA block is used for storing the DC output state DATA2 of the power supply unit;

the fourth DATA block is used for storing the ac input processing state DATA4 of the power supply unit;

the fifth DATA block is used to store the dc output processing state DATA5 of the power supply unit.

4. The server power failure monitoring device according to claim 3, wherein the failure monitoring module determines whether there is a failure of the power supply unit according to a state of each power supply unit, specifically:

and judging whether each bit of the DATA4 and the DATA5 is 1, if so, judging that no power supply unit fails, otherwise, judging that the power supply unit fails and the power supply unit corresponding to the bit of 0 fails.

5. The server power failure monitoring device according to claim 4, wherein the failure monitoring module is connected to a start pin of the redundant power supply unit, and when there is a power supply unit failure, the failure monitoring module pulls down the start pin of the redundant power supply unit to turn on the redundant power supply unit.

6. The server power failure monitoring device according to any one of claims 1-5, wherein the device further comprises a front panel indicator light;

and after the fault processing module receives the fault information, the indication state of the front panel indicator light is controlled according to the fault information.

7. The server power failure monitoring device of claim 6, wherein the failure monitoring module is a CPLD module, and the failure processing module is a BMC module.

8. A server power failure monitoring method is characterized by comprising the following steps:

acquiring the state of each power supply unit;

judging whether a power supply unit fails according to the state of each power supply unit;

if the power supply unit fails, the failure information is output and displayed at the front end of the server operating system, and meanwhile, the redundant power supply unit is controlled to be started.

9. The server power failure monitoring method of claim 8, wherein the obtained power supply unit states include an ac input state and a dc output state of the power supply unit;

the AC input state of the power supply unit is represented as DATA1= [ AC1_ OK, AC2_ OK, \8230;, ACn _ OK ], the DC output state of the power supply unit is represented as DATA2= [ DC1_ OK, DC2_ OK, \8230;, DCn _ OK ], n power supply units in total, ACi _ OK =0 represents that the AC input state of the ith power supply unit is abnormal, DCi _ OK =0 represents that the DC output state of the ith power supply unit is abnormal, ACi _ OK =1 represents that the AC input state of the ith power supply unit is normal, and DCi _ OK =1 represents that the DC output state of the ith power supply unit is normal;

correspondingly, whether there is power supply unit trouble according to each power supply unit state judgement specifically includes:

obtaining an alternating current input processing state DATA4 of the power supply unit by performing bitwise XOR on an alternating current input state DATA1 of the power supply unit and a standard array DATA3= [00 \8230; 0 ]; wherein the standard array DATA3 has n bits in total;

obtaining a direct current output processing state DATA5 of the power supply unit by carrying out bitwise XOR on the direct current output state DATA2 of the power supply unit and a standard array DATA3= [00 \8230; 0 ];

and judging whether each bit of the DATA4 and the DATA5 is 1, if so, judging that no power supply unit fails, otherwise, judging that the power supply unit fails and the power supply unit corresponding to the bit of 0 fails.

10. The server power failure monitoring method of claim 9, further comprising:

and when the power supply unit has a fault, the indicating state of the front panel indicating lamp is controlled according to the fault information.

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