Method for preventing hard disk from being destroyed by mistake during blade insertion and extraction of multi-blade server

Abstract

The invention discloses a method for preventing a hard disk from being destroyed by mistake during blade plugging and unplugging of a multi-blade server, and relates to the technical field of blade servers, the method comprises the following steps: setting a destroying signal port for each blade mainboard in the server and connecting a diode in series; the output end of the destruction control key is connected to a destruction control signal bus and used for triggering unified destruction control operation; when any blade mainboard is not electrified to execute blade plugging operation, a diode is used for preventing a low-level destroying signal from influencing a destroying control signal bus; when hard disk destruction operation is executed, the low-level destruction signal is transmitted to the destruction control signal bus through the diode, and hard disk destruction is executed. The technical problem that in the prior art, in the blade inserting and pulling process of a multi-blade server, due to low-level signal interference of the non-powered blade, a hard disk is mistakenly destroyed is solved, and the technical effects that destroying signal interference of the non-powered blade is effectively isolated, hard disk destroying is prevented from being mistakenly triggered, and data destroying safety and operation efficiency are improved are achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of blade servers, and particularly relates to a hard disk anti-accidental destruction method for multi-blade server plug-in and plug-out blades. BACKGROUND

[0002] Multi-blade servers are widely used in large-scale computing and storage scenarios. However, when using multi-blade servers, frequent blade plug-in and plug-out operations can cause accidental destruction of hard disk data. Especially during hot plug-in or maintenance, accidental triggering of the destruction mechanism can cause serious data loss risk. The hard disk destruction mechanism of the traditional multi-blade server usually adopts an independent control mode, that is, a logic chip is added on the backplane of the whole machine, and each blade mainboard triggers the hard disk destruction operation through its own destruction signal line. The destruction button signal on the panel of the whole machine and the destruction signals of all blades are separately connected to the logic chip, and the destruction function is controlled through the logic chip. When a blade is not powered on (such as in a maintenance or replacement state), its destruction signal line can present a low level state. If plug-in and plug-out operations are performed on other blades at this time, the low level signal can interfere with the destruction control logic of other blades through the shared signal line, causing accidental triggering of hard disk destruction. For example, in some multi-blade servers, the whole machine needs a one-key hard disk destruction function, and the destruction signals of all blades are connected together through the backplane of the whole machine, and then the destruction of the hard disks of all blades is controlled through a destruction button on the panel of the whole machine. However, the blades usually have hot plug-in requirements. When slowly plugging in blade A, the destruction signal pin on the connector of blade A is connected to the backplane first. At this time, blade A is not powered on, and the destruction signal will cause a leakage, which will instantaneously pull down the destruction signals of other blades for a period of time, triggering the destruction of the hard disks of other blades.

[0003] At the present stage, in the related art, there is a technical problem of accidental destruction of hard disks of a multi-blade server caused by the low level signal of a blade not powered on during blade plug-in and plug-out. SUMMARY

[0004] The present application provides a hard disk anti-accidental destruction method for multi-blade server plug-in and plug-out blades, which solves the technical problem of accidental destruction of hard disks of a multi-blade server caused by the low level signal of a blade not powered on during blade plug-in and plug-out in the prior art, effectively isolates the destruction signal interference of the blade not powered on, prevents accidental triggering of hard disk destruction, and improves the safety and operation efficiency of data destruction.

[0005] The application provides a hard disk anti-accidental destruction method when multiple-blade server blades are plugged in or unplugged, which comprises the following steps: a destruction signal port is arranged for each blade mainboard in the server, and a diode is connected in series to the destruction signal port, the positive electrode of the diode is connected to the destruction signal line of the corresponding blade mainboard, and the negative electrode of the diode is uniformly connected to a destruction control signal bus; the output end of a destruction control button of the server is connected to the destruction control signal bus, which is used for triggering a unified destruction control operation; in the case that any blade mainboard is not powered on, when the blade plugging operation of the blade mainboard that is not powered on is performed, the low-level destruction signal of the corresponding blade mainboard is prevented from affecting the destruction control signal bus through the corresponding diode; when the hard disk destruction operation is performed, the destruction control button is pressed, the low-level destruction signal is transmitted to the destruction control signal bus through the diode, and all the blade mainboards are triggered to perform the hard disk destruction.

[0006] In a possible implementation, the hard disk anti-accidental destruction method when multiple-blade server blades are plugged in or unplugged further comprises the following processing: the low-level destruction signal is a 0V-3.3V level signal.

[0007] In a possible implementation, the hard disk anti-accidental destruction method when multiple-blade server blades are plugged in or unplugged further comprises the following processing: the diode comprises a Schottky diode.

[0008] In a possible implementation, the hard disk anti-accidental destruction method when multiple-blade server blades are plugged in or unplugged further comprises the following processing: the model of the Schottky diode is RB551V-30.

[0009] In a possible implementation, the hard disk anti-accidental destruction method when multiple-blade server blades are plugged in or unplugged further comprises the following processing: the destruction control button is arranged on the whole machine panel, which is used for uniformly controlling the destruction operation of multiple blade mainboards.

[0010] In a possible implementation, the hard disk anti-accidental destruction method when multiple-blade server blades are plugged in or unplugged further comprises the following processing: the negative electrodes of all the diodes are connected to form a common control node; and the common control node is connected to the output end of the destruction control button.

[0011] In a possible implementation, the hard disk anti-accidental destruction method when multiple-blade server blades are plugged in or unplugged further comprises the following processing: the blade mainboard has a hot plug function, when the blade plugging operation of the blade mainboard that is not powered on is performed, the low-level destruction signal is isolated through the corresponding diode, so that the destruction control logic of the blade mainboard that is powered on is not mistakenly triggered.

[0012] In a possible implementation, the method further performs the following processing: when the destruction control button is not triggered, the destruction control signal bus remains at a high level, and a low-level signal is blocked from entering by the diode.

[0013] In a possible implementation, the method further performs the following processing: the anode and cathode of the diode are connected in parallel to a voltage comparator, the voltage comparator is used to compare the voltages of the anode and cathode of the diode, and if a preset threshold is met, an abnormal plugging warning of the blade is reported.

[0014] In a possible implementation, the method further performs the following processing: health testing is performed on all diodes in a preset period, a health state data table is established, and the health state data table is used to manage replacement of the diodes.

[0015] The method provided in the application is a method for preventing mistaken destruction of a hard disk when a blade is plugged into or unplugged from a multi-blade server. A destruction signal port is arranged for each blade mainboard of the server and a diode is connected in series to the destruction signal port. A destruction control button output end is connected to a destruction control signal bus, and is used to trigger a unified destruction control operation. When a blade plugging or unplugging operation is performed without power supply to any blade mainboard, a low-level destruction signal is prevented from affecting the destruction control signal bus by the diode. When a hard disk destruction operation is performed, the destruction control button is pressed, a low-level destruction signal is transmitted to the destruction control signal bus by the diode, and the hard disk destruction is performed. The method solves the technical problem of mistaken destruction of a hard disk caused by low-level signal interference of a blade without power supply during plugging or unplugging of a multi-blade server in the prior art, effectively isolates the destruction signal interference of the blade without power supply, prevents mistaken triggering of the hard disk destruction, and improves the safety and operation efficiency of data destruction. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the application, the drawings of the embodiments of the application will be briefly introduced as follows. In the present application, a flowchart is used to illustrate the operations performed by the system according to the embodiments of the application. It should be understood that the foregoing or the following operations are not necessarily performed in sequence. On the contrary, various steps can be processed in reverse order or simultaneously according to needs. Meanwhile, other operations can be added to these processes, or one or more steps can be removed from these processes.

[0017] Figure 1 A flowchart of a method for preventing mistaken destruction of a hard disk when a blade is plugged into or unplugged from a multi-blade server is provided in the embodiments of the application.

[0018] Figure 2A design principle schematic diagram of a hard disk anti-accidental destruction method when a multi-blade server blade is plugged in is provided for an embodiment of the application.

[0019] Marked with a reference numeral: hard disk 1, hard disk 2…hard disk n, diode 1, diode 2…diode n, voltage comparator 1, voltage comparator 2…voltage comparator n. DETAILED DESCRIPTION

[0020] The above description is only a summary of the technical solutions of the application, in order to enable the technical means of the application to be more clearly understood, and can be implemented according to the content of the specification, and in order to enable the above and other purposes, characteristics and advantages of the application to be more obvious and easy to understand, the following specific embodiments of the application are described.

[0021] In order to make the purpose, technical scheme and advantages of the application more clear, the following will combine the drawings to make further detailed description of the application, the described embodiments should not be regarded as limitation of the application, all other embodiments obtained by the person skilled in the art without creative labor belong to the protection scope of the application.

[0022] In the following description, "some embodiments" are related to a subset of all possible embodiments, but it can be understood that "some embodiments" can be the same subset or different subset of all possible embodiments, and can be combined with each other without conflict, the term "first\second" related only to distinguish similar objects, not represent the specific order of the object. The terms "include" and "have" and any variations, are intended to cover non-exclusive inclusion, for example, a process, method, product or server including a series of steps or units does not have to be limited to those steps or units clearly listed, but can include other steps or modules that are not clearly listed or inherent to these processes, methods, products or devices. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as understood by those skilled in the art of the technology to which the application belongs. The terms used herein are only for the purpose of describing the embodiments of the application.

[0023] An anti-accidental destruction method for hard disks when a multi-blade server blade is plugged in is provided in an embodiment of the application, as shown in the method comprises: Figure 1

[0024] Step S100, a destruction signal port is set for each blade mainboard in the server, and a diode is connected in series at the destruction signal port, the positive electrode of the diode is connected to the destruction signal line of the corresponding blade mainboard, and the negative electrode of the diode is uniformly connected to the destruction control signal bus.

[0025] ​Preferably, the server is provided with a dedicated hardware interface (such as a GPIO pin) on each blade motherboard for outputting a hard disk destruction control signal; the destruction signal line is a signal line leading out from the internal circuit of the blade motherboard and connected to the destruction signal port for transmitting the destruction instruction (usually active at low level, i.e. triggering destruction when outputting low level); the destruction control signal bus is a common signal line connected to the cathodes of all diodes and finally connected to the output end of the destruction control button, when the destruction button is pressed, the bus is pulled low (low level), and all blade motherboards execute hard disk destruction after detecting the low level signal, realizing one-key global destruction and improving operation reliability. A diode (unidirectional conduction element) is connected in series between the destruction signal port of each blade motherboard and the destruction control signal bus, the anode of the diode is connected to the destruction signal line of the blade motherboard (i.e. the destruction signal output end of the local blade), and the cathode of the diode is uniformly connected to the destruction control signal bus (i.e. the global destruction signal line shared by all blades), ensuring that during normal destruction, the button is pressed → the bus is pulled low → the diode is forward-biased → the blade motherboard detects low level → destruction is triggered, and when the blade is not powered on, the low level of the blade not powered on cannot pass through the diode in reverse direction to affect the bus, avoiding false triggering; wherein the diode can be replaced by an electronic switching device with unidirectional conduction characteristics for realizing equivalent destruction signal isolation function.

[0026] Step S200, connecting the output end of the destruction control button of the server to the destruction control signal bus for triggering unified destruction control operation.

[0027] Preferably, the destruction control button is a hardware button (usually located on the front panel or management module of the server) specially used for triggering global hard disk destruction operation, when the destruction control button is pressed, a low level signal is outputted and broadcasted to all blade motherboards through the destruction control signal bus, realizing one-key synchronous destruction, wherein the output pin of the destruction control button is directly connected to the destruction control signal bus, when the button is pressed, the output end pulls the bus to low level (such as ground), forming a low level signal, the destruction control signal bus is pulled low, and all blade motherboards detect the low level of the bus through the diode, the destruction control circuit (such as GPIO input) of each blade motherboard recognizes the valid signal, and triggers local hard disk destruction operation (such as erasing firmware, power off or physical destruction); when released, the bus is restored to high level (default high level) through the pull-up resistor, and all blade motherboards are in standby state and will not trigger destruction by mistake.

[0028] Step S300, in the case that any blade motherboard is not powered on, when performing the blade plugging operation of the blade motherboard not powered on, the low level destruction signal of the corresponding blade motherboard is prevented from affecting the destruction control signal bus through the corresponding diode.

[0029] Preferably, when a certain blade mainboard in the server is not powered on (such as in a maintenance, replacement or failure state), its destruction signal port may present a low level state due to circuit suspension or internal pull-down resistance. A diode is connected in series to the destruction signal port of each blade mainboard, and the one-way conduction characteristic of the diode is used to realize signal isolation when performing the blade plugging operation of the unpowered blade mainboard. When the destruction signal line of the unpowered blade outputs a low level, the diode is in a reverse blocking state because the anode of the diode is connected to the local signal line of the blade (low level) and the cathode is connected to the bus (default high level), thereby effectively blocking the low level destruction signal from interfering with the destruction control signal bus. Only when the destruction control button is actively pressed and the bus is forcibly pulled low, the diode will conduct in a forward direction to transmit the destruction instruction to each blade mainboard, which can not only ensure efficient execution of normal destruction operation, but also prevent the risk of accidental destruction caused by blade plugging operation, thereby significantly improving the security and reliability of data management of the multi-blade server.

[0030] Step S400, when performing the hard disk destruction operation, the destruction control button is pressed to transmit the low level destruction signal to the destruction control signal bus through the diode, thereby triggering all blade mainboards to perform hard disk destruction.

[0031] Preferably, as shown in Figure 2 When performing the hard disk destruction operation, the operator presses the destruction control button on the server, at which time the output end of the destruction control button forcibly pulls the level of the destruction control signal bus low. Since the destruction signal port of each blade mainboard is connected to the bus through a diode (the anode of the diode is connected to the local destruction signal line of the blade, and the cathode is connected to the bus), the low level destruction signal is simultaneously transmitted to the destruction signal receiving circuit of each blade mainboard through the one-way conduction of all diodes. After detecting the valid low level destruction signal, each blade mainboard immediately starts the preset hard disk destruction program (such as data erasing, firmware locking or physical destruction operation, etc.). The one-way conduction characteristic of the diode ensures one-way transmission of the destruction signal and prevents signal backflow interference. The destruction control signal bus structure realizes synchronous response of all blades, ensures that all hard disk data can be quickly and completely destroyed in an emergency, meets the timeliness requirement of data security protection, and ensures the reliability of the operation through hardware level circuit design.

[0032] Preferably, the hard disk destruction control precision operation is realized through multi-stage hardware cooperation. When the destruction button is triggered, a low-level signal is transmitted synchronously to all blade mainboards through a bus. Each blade receives the destruction instruction through a series of Schottky diodes (including diode 1, diode 2 to diode n). The destruction signal line of each blade is connected to the positive electrode of the diode, and the negative electrode of the diode is connected to the destruction control bus. A voltage comparator (including voltage comparator 1, voltage comparator 2 to voltage comparator n) monitors the potential difference between the two ends of the diode in real time. Specifically, in the normal working state, all diodes maintain the one-way conduction characteristic to ensure accurate transmission of the destruction signal. When a blade (such as blade 2) is in an unpowered state, the corresponding diode 2 blocks the reverse interference, and the voltage comparator 2 synchronously detects the abnormal state, thereby realizing synchronous destruction control of all hard disks (hard disk 1, hard disk 2 to hard disk n) and ensuring the safety and reliability of the operation.

[0033] Further, the low-level destruction signal is a level signal of 0V to 3.3V.

[0034] Further, the diode includes a Schottky diode.

[0035] Further, the Schottky diode is of RB551V-30 model.

[0036] Preferably, the Schottky diode has an ultra-low forward voltage drop (0.2-0.3V). Compared with ordinary silicon diodes (0.6-0.7V), the Schottky diode has smaller voltage loss when conducting, ensuring that the low-level destruction signal (such as 0V) output by the blade mainboard can be transmitted to the bus without attenuation, avoiding misjudgment caused by insufficient signal amplitude. Moreover, the metal-semiconductor structure of the Schottky diode eliminates the charge storage effect of the PN junction diode, and can respond instantaneously to the triggering action of the destruction button, meeting the millisecond-level time limit requirement of server emergency destruction. For example, when a blade is hot-plugged under abnormal 12V power supply, the destruction signal line thereof may generate a noise voltage of -5V to +5V. The Schottky diode of RB551V-30 model can reliably cut off reverse interference and quickly conduct with a voltage drop of 0.3V when actively pulling down the bus, balancing safety isolation and signal fidelity.

[0037] Further, the destruction control button is arranged on the whole machine panel and is used for uniformly controlling the destruction operation of the plurality of blade mainboards.

[0038] Preferably, the destruction control button is installed as a physical emergency destruction switch in a dedicated security area of the server main panel, directly connected to the destruction control signal bus through a dedicated line, forming a star topology with the destruction circuits of all blade mainboards, and adopting an anti-misoperation mechanical structure design, such as a physical protective cover (which needs to be flipped to operate) and a two-stage pressing mechanism (unlocked first and then triggered), when the operator presses the button, the destruction control signal bus level is directly pulled low, the low-level destruction signal is transmitted to the destruction signal receiving circuit of each blade mainboard through the one-way conduction of the Schottky diode (positive electrode connected to the local destruction signal line of the blade, negative electrode connected to the bus) connected in series on each blade mainboard, ensuring that the destruction signals received by all blade mainboards have high synchronicity.

[0039] Further, a multi-blade server hard disk anti-misoperation destruction method when plugging in or out a blade also includes connecting the negative electrodes of all the diodes to form a common control node; and connecting the common control node with the output end of the destruction control button.

[0040] Preferably, the destruction control signals of all blade mainboards are unified through diodes, specifically, the destruction signal output end of each blade mainboard is connected through the positive electrode of a Schottky diode, while the negative electrodes of all diodes are concentratedly connected to a common circuit node (i.e. common control node), which is then directly connected with the output pin of the destruction control button, thereby forming a star topology signal transmission network, through the centralized control of the common node, global synchronization of the destruction signal can be realized, ensuring that all blade mainboards can receive the destruction instruction at the same time reference (error <1ms), and at the same time, by using the one-way conduction characteristic of the diode, it can not only ensure that the signal can be transmitted to each blade without attenuation when the button is triggered, but also effectively isolate the reverse interference signal that may be generated by the unpowered blade.

[0041] Further, a multi-blade server hard disk anti-misoperation destruction method when plugging in or out a blade also includes that the blade mainboard has hot plug function, when the unpowered blade mainboard is being plugged in or out, the low-level destruction signal is isolated through the corresponding diode, so that the destruction control logic of the powered-on blade mainboard is not mis-triggered.

[0042] Preferably, the blade mainboard has hot plug function, when a certain blade mainboard is in unpowered state (such as maintenance replacement or fault handling) and is being plugged in or out, a low-level signal is generated at its destruction signal port, at this time, the Schottky diode connected in series on the destruction signal line automatically blocks the propagation of the abnormal low-level signal to the common destruction control bus by virtue of its one-way conduction characteristic, so that the destruction control logic of the running powered-on blade mainboard is not mis-triggered, and the destruction control circuit is completely unaffected, and its destruction logic maintains a stable standby state, thereby perfectly balancing the maintenance flexibility and data destruction reliability of the multi-blade server.

[0043] Further, the hard disk anti-accidental destruction method when a multi-blade server blade is plugged in or unplugged further comprises: when the destruction control button is not triggered, the destruction control signal bus is kept at a high level, and a low-level signal is blocked from entering by the diode.

[0044] Preferably, the destruction control signal bus is kept at a high level by a pull-up resistor in a normal state (i.e., when the destruction button is not pressed), wherein the default high level of the destruction control signal bus is formed by reverse bias of a Schottky diode connected in series on each blade mainboard, and the reverse leakage current thereof is strictly controlled at a microampere level to effectively block a low-level interference signal that may be generated by a blade that is not powered on; and when any normally operating blade mainboard actively outputs a destruction signal (low level), the forward conduction characteristic of the diode can ensure that the destruction instruction is transmitted to the bus without loss. By normal isolation and trigger conduction, the operation freedom of hot maintenance is realized, and the absolute reliability of the data destruction instruction is ensured.

[0045] Further, the hard disk anti-accidental destruction method when a multi-blade server blade is plugged in or unplugged further comprises: connecting a voltage comparator in parallel with the anode and cathode of the diode, and using the voltage comparator to compare the voltages of the anode and cathode of the diode, and if a preset threshold is met, an abnormal blade plugging warning is reported.

[0046] Preferably, an intelligent blade state monitoring component is constructed by connecting a high-precision voltage comparator in parallel with the input / output end of the diode, and the voltage comparator is used to collect the voltages of the anode and cathode of the diode in real time and compare the voltages of the anode and cathode of the diode, and if a preset threshold is met, i.e., when it is detected that the forward voltage drop exceeds the conduction threshold of the Schottky diode or abnormal reverse leakage occurs, it indicates that there may be poor blade plugging contact, abnormal power supply, or line failure, etc., and an early warning mechanism is triggered immediately, including local alarm by the onboard LED indicator, sending an alarm event to the baseboard management control center, and generating a log record with a time stamp in the management interface, so as to ensure the original anti-accidental destruction function while adding preventive maintenance capability.

[0047] Further, the hard disk anti-accidental destruction method when a multi-blade server blade is plugged in or unplugged further comprises: performing health testing on all diodes within a preset period, establishing a health state data table, and using the health state data table to manage replacement of the diodes.

[0048] Preferably, the health status of all diodes is intelligently managed by a preset periodic full-automatic diagnosis mechanism. Specifically, the Schottky diodes of all blades are automatically tested for health every maintenance period (e.g., every 24 hours), i.e., detection of key electrical characteristic parameters such as forward conduction voltage drop and reverse leakage current, comparison with factory nominal parameters to obtain test results, and automatic recording to generate a health status data table containing the serial number of each diode, cumulative working time, forward voltage drop drift value, reverse leakage current trend, and other key indicators. Finally, the health status data table is used for diode replacement management, for example, when the forward voltage drop of a certain diode exceeds the threshold or the performance degradation rate is abnormal, the faulty diode position is intuitively located and a pre-maintenance work order is generated for replacement, ensuring data destruction safety while significantly improving operation and maintenance efficiency.

[0049] The above detailed description does not constitute a limitation on the protection scope of the present application. Those skilled in the art should understand that various modifications, combinations and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application. In some cases, the actions or steps described in the present application can be performed in an order different from that in the embodiments and still achieve the desired results. In addition, the processes depicted in the drawings do not necessarily require the specific order or continuous order shown to achieve the desired results. In some embodiments, multi-task processing and parallel processing are possible or can be advantageous.

Claims

1. A method for preventing accidental destruction of hard disks when inserting or removing blades in a multi-blade server, characterized in that: The method comprises: A destruction signal port is provided for each blade motherboard in the server, and a diode is connected in series to the destruction signal port, the anode of the diode is connected to the destruction signal line of the corresponding blade motherboard, and the cathode of the diode is uniformly connected to the destruction control signal bus; Connecting the output end of the destruction control button of the server to the destruction control signal bus to trigger a unified destruction control operation; When any blade mainboard is not powered on, when performing a blade plugging and unplugging operation on the blade mainboard that is not powered on, the corresponding diode is used to prevent the low-level destruction signal of the corresponding blade mainboard from affecting the destruction control signal bus; When executing the hard disk destruction operation, the destruction control button is pressed, and the low-level destruction signal is transmitted to the destruction control signal bus through the diode, triggering all blade mainboards to execute the hard disk destruction.

2. A method for preventing accidental destruction of hard disks when inserting or removing blades in a multi-blade server according to claim 1, characterized in that: The low-level destruction signal is a level signal of 0V to 3.3V.

3. The method for preventing accidental destruction of hard disks when inserting or removing blades in a multi-blade server according to claim 1, wherein: The diode includes a Schottky diode.

4. A method for preventing accidental destruction of hard disks when inserting or removing blades in a multi-blade server according to claim 3, characterized in that: The model of the Schottky diode is RB551V-30.

5. The method for preventing accidental destruction of hard disks when inserting or removing blades in a multi-blade server according to claim 1, wherein: The destruction control button is arranged on the whole machine panel and is used for uniformly controlling the destruction operation of multiple blade mainboards.

6. The method for preventing accidental destruction of hard disks when inserting or removing blades in a multi-blade server according to claim 1, wherein: The cathodes of the diodes are uniformly connected to a destruction control signal bus, including: Connecting the cathodes of all the diodes to form a common control node; The public control node is connected to the output end of the destruction control button.

7. The method for preventing accidental destruction of hard disks when inserting or removing blades in a multi-blade server according to claim 1, characterized in that: The blade motherboard has a hot-swap function. When a blade motherboard that is not powered on is plugging or unplugging a blade, a low-level destruction signal is isolated by a corresponding diode, so that the destruction control logic of the powered blade motherboard is not mistakenly triggered.

8. The method for preventing accidental destruction of hard disks when inserting or removing blades in a multi-blade server according to claim 1, wherein: When the destruction control button is not triggered, the destruction control signal bus remains at a high level and blocks the low level signal from entering through the diode.

9. The method for preventing accidental destruction of hard disks when inserting or removing blades in a multi-blade server according to claim 1, wherein: A voltage comparator is connected in parallel to the positive and negative electrodes of the diode, and the voltage comparator is used to compare the positive and negative voltages of the diode. If a preset threshold is met, an abnormal blade insertion and removal warning is reported.

10. The method for preventing accidental destruction of hard disks when inserting or removing blades in a multi-blade server according to claim 1, wherein: Perform health tests on all diodes within a preset period, create a health status data table, and use the health status data table to manage diode replacement.

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