TWI771053B - Server - Google Patents

Abstract

A server includes a cabinet, a computing node and a plurality of JBODs. The cabinet is provided with a computing node accommodating slot and a plurality of hard disk accommodating slots. The computing node is assembled in the computing node accommodating slot, and the computing node is not provided with any hard disk. The JBODs are respectively assembled in the hard disk accommodating slots, each JBOD includes a plurality of hard disks, and the hard disks are electrically connected to the computing node.

Description

server

The present invention relates to a server, especially a blade server.

Generally speaking, a blade server includes a cabinet, a plurality of slots disposed in the cabinet, and a plurality of server nodes connected to the slots, and each server node includes a mainboard, and the mainboard is provided with a central processing unit, Memory, various PCIE computing components, and multiple hard drives. On the motherboard of each server node, the hardware components closer to the CPU can achieve higher transmission rates and lower signal delays. Conversely, the farther the hardware components are from the CPU, the lower the transmission rate and the longer the signal delay time. Since the transfer rate required for data storage is much lower than the transfer rate required by the memory and various PCIE-based computing components, when configuring each hardware component on the server motherboard, the memory and PCIE computing components are usually configured in the Close to the central processing unit, as for the hard disk, it is arranged at a distance from the central processing unit and is connected to the central processing unit through a long cable.

Due to the increasing demand for data storage, the server requires more and more hard disks. However, currently the number of hard disks that can be accommodated in each server node has reached saturation, and in order to increase the total number of hard disks that can be accommodated on each server node, there is indeed a need for an improved server architecture.

The present invention is to provide a server, which maximizes the total number of hard disks that can be accommodated in the server on the premise that the data transmission bandwidth is not affected.

A server according to an embodiment of the present invention includes a cabinet, a computing node, and a plurality of hard disk aggregation devices. The cabinet is provided with a computing node accommodating slot, the computing node is assembled in the computing node accommodating slot, and the computing node is not provided with any hard disk. The cabinet is further provided with a plurality of hard disk storage slots, and the hard disk aggregation devices are respectively assembled in the hard disk storage slots, each hard disk aggregation device includes a plurality of hard disks, and the hard disk aggregation devices The disk is electrically connected to the computing node.

A server according to an embodiment of the present invention includes a cabinet, a first computing node, a second computing node, a network connection card, and a hard disk aggregation device. The cabinet is provided with a first computing node accommodating slot, a second computing node accommodating slot and a hard disk accommodating slot. The first computing node is assembled in the first computing node accommodating slot, and the first computing node is not provided with any hard disk. The second computing node is assembled in the second computing node accommodating slot, and the second computing node is not provided with any hard disk. The network connection card is respectively connected to the first computing node and the second computing node, and the first working state of the first computing node is synchronized with the second working state of the second computing node. The hard disk aggregation device is assembled in the hard disk accommodating slot. The hard disk aggregation device includes a plurality of hard disks, and the hard disks are electrically connected to the first computing node and the second computing node.

To sum up, according to the configuration structure of the server of the present invention, all hard disks are concentrated in the hard disk aggregation device, and the computing node does not have any hard disks, thereby increasing the total number of hard disks that can be accommodated in the server. In addition, computing nodes and hard disk aggregation devices can be separately purchased as independent modular nodes, which not only facilitates management, but also reduces overall costs. Furthermore, according to the needs of business applications or the needs of power supply and load-bearing of the computer room, the ratio of computing nodes and hard disk aggregation devices can be flexibly carried out, so as to optimize the overall operation performance of the server. Furthermore, the two computing nodes are in a synchronized state under normal conditions to serve as backup for each other, which can improve the reliability and security of the server.

The above description of the present disclosure and the following description of the embodiments are used to demonstrate and explain the spirit and principle of the present invention, and provide further explanation of the scope of the patent application of the present invention.

A: Server

1: Cabinet

11: Compute node storage slot

12: Hard disk storage slot

2: Compute node

3: Hard disk aggregation device

31: Hard disk expansion board

311: Hard Disk Expansion Controller

312: hard disk aggregation device port

313: second specification transformer

314: Third Specification Transformer

32: Hard disk configuration board

321: Repeater

322: Third Specification Transformer

33A-33F: Hard Disk

34: Fan control board

341: Fan control chip

342A-342B: Fans

35: Power control board

351: Power

352: First Specification Transformer

353: Fourth Specification Transformer

354: Hot Swap Protection Chip

4: Integrated circuit busbar expansion board

41: Bus management chip

42: Compute node port

43: Hard Disk Aggregation Device Port

B: server

5: Cabinet

51: The first computing node accommodation slot

52: The second computing node accommodation slot

53: Hard disk storage slot

6: The first computing node

7: Second computing node

8: Hard disk aggregation device

81: Hard disk expansion board

811: Hard Disk Expansion Controller

812: Hard Disk Aggregation Device Port

813: Compute node port

814: The first light-emitting element

815: Second light-emitting element

816: Second Specification Transformer

817: Third Spec Transformer

82: Hard disk configuration board

821: Repeater

822: Third Specification Transformer

83A-83F: Hard Disk

84: Fan control board

841: Fan control chip

842A-842B: Fan

85: Power control board

851: Power

852: First Specification Transformer

853: Fourth Specification Transformer

854: Hot Swap Protection Chip

9: Network connection card

1 is a schematic diagram of the assembly of the server according to the first embodiment of the present invention; FIG. 2 is a circuit functional block diagram of the server according to the first embodiment of the present invention; FIG. 3 is a circuit functional block diagram of the hard disk aggregation device of FIG. 2 4 is a diagram of the power delivery configuration of the hard disk aggregation device of FIG. 2; FIG. 5 is a schematic diagram of the assembly of a server according to a second embodiment of the present invention; FIG. 6 is a circuit functional block of the server according to the second embodiment of the present invention. 7 is a circuit functional block diagram of the hard disk aggregation device of FIG. 6 ; and FIG. 8 is a power delivery configuration diagram of the hard disk aggregation device of FIG. 6 .

The detailed features and advantages of the present invention are described in detail in the following embodiments, and the content is sufficient to enable any person skilled in the relevant art to understand the technical content of the present invention and implement it accordingly, and according to the content disclosed in this specification, the scope of the patent application and the drawings , any person skilled in the related art can easily understand the related objects and advantages of the present invention. The following examples further illustrate the viewpoints of the present invention in detail, but do not limit the scope of the present invention in any viewpoint.

FIG. 1 is a schematic diagram of the assembly of the server according to the first embodiment of the present invention. As shown in FIG. 1 , the server A includes a cabinet 1 , a computing node 2 and a plurality of hard disk aggregation devices 3 , and the cabinet 1 is provided with a computing node accommodating slot 11 and a plurality of hard disk accommodating slots 12 . The computing node 2 is assembled in the computing node accommodating slot 11 , wherein the computing node 2 includes a baseboard management controller, a central processing unit, a memory and PCIE computing components, but the computing node 2 is not provided with any hard disk. The hard disk aggregation devices 3 are assembled in the hard disk accommodating slots 12 respectively.

FIG. 2 is a circuit functional block diagram of the server according to the first embodiment of the present invention. The embodiment of the server in FIG. 2 illustrates the circuit functional structure of one computing node monitoring multiple hard disk aggregation devices at the same time, and using two hard disks Aggregation device as an example. The server A includes a computing node 2, two hard disk aggregation devices 3 (JBOD) and an integrated circuit bus expansion board 4 (I2C expansion board), and the computing node 2 is electrically connected to the integrated circuit bus expansion board 4 through the integrated circuit bus expansion board 4. Some hard disk aggregation devices 3 . Each hard disk aggregation device 3 includes a hard disk expansion board 31 (expansion board), and the hard disk expansion board 31 is provided with a hard disk expansion controller 311 (eg product model: SAS34X36R) and a hard disk aggregation device port 312 , the hard disk aggregation device connection port 312 is an RJ45 connection port, and the hard disk expansion controller 311 is electrically connected to the hard disk aggregation device connection port 312 through an integrated circuit bus (I2C). The integrated circuit bus expansion board 4 is provided with a bus management chip 41, a computing node connection port 42 and a plurality of hard disk aggregation device connection ports 43, each hard disk aggregation device connection port 43 is an RJ45 connection port, and the bus bar The management chip 41 is electrically connected to the computing node connection ports 42 and the hardware aggregation device connection ports 43 through the integrated circuit bus bars. The computing node port 42 is electrically connected to the baseboard management controller (eg, product model: AST2500) of the computing node 2 through signal lines, and the hard disk aggregation device ports 43 are electrically connected to the hard disks respectively through signal lines The hard disk aggregation device ports 312 on the aggregation device 3 . In this way, the computing node 2 can update the firmware of the hard disk expansion controller 311 in each hard disk aggregation device 3 and monitor the status of each hard disk aggregation device 3 through the IC bus expansion board 4 .

FIG. 3 is a circuit functional block diagram of the hard disk aggregation device in FIG. 2 . As shown in FIG. 3 , each hard disk aggregation device 3 includes a hard disk configuration board 32 , a plurality of hard disk expansion boards 31 in addition to the hard disk expansion board 31 . Plates 33A-33F, a fan control board 34 and a power control board 35. The hard disks 33A to 33B are connected to the hard disk expansion board 31 , and the hard disks 33C to 33F are connected to the hard disk configuration board 32 . The hard disk expansion controller 311 is electrically connected to the hard disk configuration board 32, the power control board 34 and the fan control board 35 through the integrated circuit bus bar, and the hard disk expansion controller is 311 is electrically connected to the hard disks 33A- 33B provided on the hard disk expansion board 31 and the hard disks 33C- 33D provided on the hard disk configuration board 32 through the SAS transmission line. Since the hard disks 33E-33F are far away from the hard disk expansion controller 311, the hard disk configuration board 32 is further provided with a repeater 321, and the repeater 321 is electrically connected to the hard disk expansion controller 311 through a SAS transmission line and hard drives 33E-33F. In this way, the hard disk expansion controller 311 can transmit the SAS signal to the hard disks 33E-33F through the repeater 321 . Furthermore, the computing node 2 can obtain the hard disk status information of each of the hard disks 33A-33F through the hard disk expansion controller 311, wherein the hard disk status information includes the hard disk rotation speed, the hard disk writing speed and the hard disk reading speed. Take speed. In addition, the hard disk expansion controller 311 also supports the function of hard disk group activation to avoid excessive power consumption. The hard disk expansion controller 31 is further provided with a URAT interface, and the hard disk expansion board 3 is provided with a DB9 standard interface.

The fan control board 34 is provided with a fan control chip 341 and a plurality of fans 342A-342B, wherein the fan control chip 341 is a complex programmable logic device (CPLD), and the fan control chip 341 is electrically connected to the fans 342A- 342B And the hard disk expansion controller 1311. The computing node 2 obtains the fan status information of each of the fans 342A- 342B through the hard disk expansion controller 311 of each hard disk aggregation device 3 , and the fan status information such as the fan speed. The computing node 2 can also update the firmware in the fan control chip 341 through the hard disk expansion controller 311 . In addition, when the hard disk expansion controller 31 is abnormal, the fan control chip 341 will control the fans 342A- 342B according to safety specifications.

FIG. 4 is a power transmission configuration diagram of the hard disk aggregation device of FIG. 3 . As shown in FIG. 4 , the power supply control board 35 is provided with a power supply 351 and a first specification transformer 352 , the power supply 351 is used to provide a voltage of 48V, the first specification transformer 352 is a 48V/12V specification transformer, and the first specification transformer 352 It has an input end and an output end, and the input end of the first specification transformer 352 is electrically connected to the power source 351 . The hard disk expansion board 31 is provided with a second specification transformer 313 and a third specification transformer 314, and the hard disk configuration board Another third specification transformer 313 is provided on 32 , wherein the second specification transformer 313 is a 12V/1.8V specification transformer, and the two third specification transformers 314 and 322 are 12V/5V specification transformers. The second specification transformer 313 has an input terminal and an output terminal. The input terminal of the second specification transformer 313 is electrically connected to the output terminal of the first specification transformer 352 , and the output terminal of the second specification transformer 313 is electrically connected to the hard disk. Expansion controller 311 . The third specification transformer 314 has an input terminal and an output terminal, the input terminal of the third specification transformer 314 is electrically connected to the output terminal of the first specification transformer 352, and the output terminal of the third specification transformer 314 is electrically connected to these Hard disks 33A-33B. The third specification transformer 322 has an input terminal and an output terminal, the input terminal of the third specification transformer 322 is electrically connected to the output terminal of the first specification transformer 352, and the output terminal of the third specification transformer 322 is electrically connected to these Hard disks 33C-33F.

The power control board 35 is also provided with a fourth specification transformer 353 and a hot-swap protection chip 354. The fourth specification transformer 353 is a 48V/3.3V transformer, and the fourth specification transformer 353 has an input terminal and an output terminal. The input terminal of the fourth specification transformer 353 is electrically connected to the power source 351 , and the output terminal of the fourth specification transformer 353 is electrically connected to the fan control chip 341 on the fan control board 34 . The hot-plug protection chip 354 has an input terminal and an output terminal. The input terminal of the hot-plug protection chip 354 is electrically connected to the output terminal of the transformer 352 of the first specification, and the output terminal of the hot-plug protection chip 354 is electrically connected. The fans 342A- 342B on the fan control board 34 support the fan hot-plug function.

FIG. 5 is a schematic diagram of the assembly of the server according to the second embodiment of the present invention. As shown in FIG. 5 , the server B includes a cabinet 5 , a first computing node 6 , a second computing node 7 and a plurality of hard disk aggregation devices 8 . The cabinet 5 is provided with a first computing node accommodating slot 51 and a second computing A node accommodating slot 52 and a plurality of hard disk accommodating slots 53 . The first computing node 6 is assembled in the first computing node accommodating slot 51. The first computing node 6 includes a baseboard management controller, a central processing unit, a memory, and computing components such as PCIE, but the first computing node 6 There are no hard drives set up. The second computing node 7 is assembled in the second computing node accommodating slot 52, and the second The computing node 7 includes a baseboard management controller, a central processing unit, a memory and PCIE computing components, but the second computing node 7 is not provided with any hard disk. The hard disk aggregation devices 8 are assembled into the hard disk accommodating slots 53 respectively.

FIG. 6 is a circuit functional block diagram of a server according to a second embodiment of the present invention. The embodiment of the server in FIG. 6 illustrates the circuit functional structure of two computing nodes monitoring a hard disk aggregation device at the same time. The following is based on a hard disk aggregation device. device as an example. The server B includes a first computing node 6, a second computing node 7, a hard disk aggregation device 8, and a NIC card 9. The NIC card 9 is electrically connected to the first computing node 6 and the second computing node, respectively. Compute node 7. The hard disk aggregation device 8 includes a hard disk expansion board 81 (Expansion board), the hard disk expansion board 81 is provided with a hard disk expansion controller 811, a hard disk aggregation device port 812 and a plurality of computing node connection ports 813, wherein the hard disk The disk expansion controller 811 and the hard disk aggregation device port 812 are respectively similar to the hard disk expansion controller 311 and the hard disk aggregation device port 312 in FIG. 2 . Each computing node device port 813 is a SF8644 port, the hard disk expansion controller 811 is electrically connected to the computing node device connecting ports 813 through SAS signal lines, and the computing node connecting ports 813 respectively pass two SAS signals The wire is electrically connected to the first computing node 6 and the second computing node 7 . Furthermore, through the network connection card 9, the first working state of the first computing node 6 is synchronized with the second working state of the second computing node 7, so if the first computing node 6 fails, the second computing node can 7 is responsible for monitoring the status of the hard disk aggregation device 8 .

FIG. 7 is a circuit functional block diagram of the hard disk aggregation device in FIG. 6 . As shown in FIG. 7 , the hard disk aggregation device 8 includes a hard disk configuration board 82 , a plurality of hard disks 83A- , in addition to the hard disk expansion board 81 . 83F, fan control board 84 and power control board 85, wherein the configuration structure of hard disk expansion board 81, hard disk configuration board 82, hard disks 83A-83F, fan control board 84 and power control board 85 is similar to that of the hard disk in FIG. 2 The configuration structure of the expansion board 31 , the hard disk configuration board 32 , the hard disks 33A-33F, the fan control board 34 and the power control board 35 . The difference is The hard disk expansion board 81 is further provided with a first light-emitting element 814 and a second light-emitting element 815. The first light-emitting element 814 is a light-emitting diode capable of emitting red light, and the second light-emitting element 815 is a light-emitting element capable of emitting green light. diode. The hard disk expansion controller 811 is electrically connected to the first light-emitting element 814 and the second light-emitting element 815 through a general purpose input and output (GPIO). When the connection between any computing node port 813 and the first computing node 6 (or the second computing node 7 ) is in a connection failure state, the hard disk expansion controller 811 drives the first light-emitting element 814 to emit red light. When the connection between the computing node port 813 and the first computing node 6 (or the second computing node 7 ) is in a successful state, the hard disk expansion controller 811 drives the second light-emitting element 815 to emit green light. When the connection between the computing node port 813 and the first computing node 6 (or the second computing node 7 ) is in a successful state and the first computing node 6 (or the second computing node 7 ) transmits data to the hard disk expansion controller 811 , Then, the hard disk expansion controller 811 drives the second light-emitting element 815 to emit green light according to the predetermined blinking frequency.

The fan control board 84 is provided with a fan control chip 841 and a plurality of fans 842A-842B, wherein the fan control chip 841 is a complex programmable logic device (CPLD), and the fan control chip 841 is electrically connected to the fans 842A-842B And the hard disk expansion controller 811 . The first computing node 6 and the second computing node 7 obtain the fan status information 8 of each of the fans 842A-842B through the hard disk expansion controller 811 . The first computing node 6 and the second computing node 7 also update the firmware in the fan control chip 841 through the hard disk expansion controller 811 . In addition, when the hard disk expansion controller 811 is abnormal, the fan control chip 841 will control the fans 842A-842B according to safety specifications.

FIG. 8 is a power transmission configuration diagram of the hard disk aggregation device of FIG. 6 . As shown in FIG. 8 , the power supply control board 85 is provided with a power supply 851 and a first specification transformer 852. The power supply 851 is used to provide a voltage of 48V, the first specification transformer 852 is a 48V/12V specification transformer, and the first specification transformer 852 has An input end and an output end, and the input end of the first specification transformer 852 is electrically connected to the power source 851 . The hard disk expansion board 81 is provided with a second specification transformer 816 and a third specification transformer 817, and the hard disk configuration board 82 is provided with a middle The relay 821 and another third specification transformer 822, wherein the second specification transformer 816 is a 12V/1.8V specification transformer, and the two third specification transformers 817 and 822 are 12V/5V specification transformers. The second specification transformer 816 has an input terminal and an output terminal. The input terminal of the second specification transformer 816 is electrically connected to the output terminal of the first specification transformer 852 , and the output terminal of the second specification transformer 816 is electrically connected to the hard disk. Expansion Controller 811. The third specification transformer 817 has an input terminal and an output terminal, the input terminal of the third specification transformer 817 is electrically connected to the output terminal of the first specification transformer 852, and the output terminal of the third specification transformer 817 is electrically connected to these Hard disks 83A-83B. The third specification transformer 822 has an input terminal and an output terminal, the input terminal of the third specification transformer 822 is electrically connected to the output terminal of the first specification transformer 852, and the output terminal of the third specification transformer 822 is electrically connected to these Hard disks 83C-83F.

The power control board 85 is further provided with a fourth specification transformer 853 and a hot-swap protection chip 854. The fourth specification transformer 853 is a 48V/3.3V transformer, and the fourth specification transformer 853 has an input terminal and an output terminal. The input end of the transformer 853 is electrically connected to the power source 851 , and the output end of the fourth specification transformer 853 is electrically connected to the fan control chip 841 on the fan control board 84 . The hot-plug protection chip 854 has an input terminal and an output terminal. The input terminal of the hot-plug protection chip 854 is electrically connected to the output terminal of the first specification transformer 852 , and the output terminal of the hot-plug protection chip 854 is electrically connected The fans 842A- 842B on the fan control board 84 .

To sum up, according to the configuration structure of the server of the present invention, all the hard disks are concentrated in the hard disk aggregation device, and there is no hard disk in the computing node, so that the capacity in the server can be increased. The total number of hard drives that can be accommodated. Computing nodes and hard disk aggregation devices can be purchased separately as independent modular nodes, which not only facilitates management, but also reduces overall costs. In addition, according to the needs of business applications or the power supply and load-bearing needs of the computer room, the ratio of computing nodes and hard disk aggregation devices can be flexibly carried out to optimize the overall operating performance of the server. Furthermore, the first computing node and the second computing node are often When the first computing node or the second computing node fails, the other computing node can be responsible for monitoring and obtaining the hard disk status information, fan status information and various sensor information in the hard disk aggregation device. This improves the reliability and security of the server.

Although the present invention is disclosed in the foregoing embodiments, it is not intended to limit the present invention. Changes and modifications made without departing from the spirit and scope of the present invention belong to the scope of patent protection of the present invention. For the protection scope defined by the present invention, please refer to the attached patent application scope.

A: Server

1: Cabinet

11: Compute node storage slot

12: Hard disk storage slot

2: Compute node

3: Hard disk aggregation device

Claims (10)

A server includes: a cabinet with a computing node accommodating slot and a plurality of hard disk accommodating slots; a computing node assembled in the computing node accommodating slot, and the computing node is not provided with any hard disk Disks; and a plurality of hard disk aggregation devices respectively assembled in the hard disk accommodating slots, each hard disk aggregation device includes a plurality of hard disks, and the hard disks are electrically connected to the computing node. The server of claim 1, wherein each hard disk aggregation device further comprises a hard disk expansion board, the hard disk expansion board is provided with a hard disk expansion controller, and the hard disk expansion controller is electrically connected to the A hard disk and the computing node, the computing node obtains a hard disk state information of each hard disk through the hard disk expansion controller. The server of claim 1, wherein each hard disk aggregation device further comprises a hard disk expansion board, and the hard disk expansion board is provided with a hard disk expansion controller, a computing node port, and a first light-emitting element and a second light-emitting element, the computing node port, the first light-emitting element and the second light-emitting element are electrically connected to the hard disk expansion controller, when the computing node and the computing node port are in a connection In the failure state, the hard disk expansion controller drives the first light-emitting element to emit a light of a first color, and when a connection between the computing node and the computing node port is in a successful state, the hard disk expansion controller drives the The second light-emitting element emits light of a second color. The server of claim 1, wherein each hard disk aggregation device further comprises a power control board and a hard disk expansion board, the power control board is provided with a power supply and a transformer of a first specification, the hard disk expansion board A hard disk expansion controller, a transformer with a second specification and a transformer with a third specification are provided. The power supply is electrically connected to the transformer with the second specification and the transformer with the third specification through the transformer with the first specification. The transformer with the second specification is further It is electrically connected to the hard disk expansion controller, and the third specification transformer is further electrically connected to the hard disks. The server of claim 1, wherein each hard disk aggregation device further comprises a hard disk expansion board, a fan control board and a plurality of fans, the hard disk expansion board is provided with a hard disk expansion controller, the fan The control board is provided with a fan control chip, the fan control chip is electrically connected to the fans and the hard disk expansion controller, the computing node sends an update program to the fan control chip through the hard disk expansion controller and obtains each A fan status message for the fan. The server of claim 1, further comprising an integrated circuit bus expansion board, the integrated circuit bus expansion board is provided with a computing node connection port and a plurality of hard disk aggregation device connection ports, the computing node is electrically is connected to the computing node port, and each hard disk aggregation device port is electrically connected to one of the hard disk aggregation devices. A server that includes: a cabinet is provided with a first computing node accommodating slot, a second computing node accommodating slot and a hard disk accommodating slot; a first computing node is assembled in the first computing node accommodating slot, and The first computing node is not provided with any hard disk; a second computing node is assembled in the accommodating slot of the second computing node, and the second computing node is not provided with any hard disk; a network connection card , respectively connected to the first computing node and the second computing node, a first working state of the first computing node is synchronized with a second working state of the second computing node; and a hard disk aggregation device, assembled In the hard disk accommodating slot, the hard disk aggregation device includes a plurality of hard disks, and the hard disks are electrically connected to the first computing node and the second computing node. The server of claim 7, wherein the hard disk aggregation device further comprises a hard disk expansion board, the hard disk expansion board is provided with a hard disk expansion controller, and the hard disk expansion controller is electrically connected to the hard disks The hard disk, the first computing node and the second computing node, the first computing node and the second computing node obtain a hard disk state information of each hard disk through the hard disk expansion controller. The server of claim 7, wherein the hard disk aggregation device further comprises a power control board and a hard disk expansion board, the power control board is provided with a power supply and a transformer of a first specification, the hard disk expansion board is provided with A hard disk expansion controller, a transformer of a second specification and a transformer of a third specification, the power supply is electrically connected to the transformer of the second specification and the transformer of the third specification through the transformer of the first specification, and the transformer of the second specification is electrically connected to the hard disk expansion controller, and the third specification transformer is further electrically connected to the hard disks. The server of claim 7, wherein the hard disk aggregation device further comprises a hard disk expansion board, a fan control board and a plurality of fans, the hard disk expansion board is provided with a hard disk expansion controller, the fan controls The board is provided with a fan control chip, the fan control chip is electrically connected to the fans and the hard disk expansion controller, and the first computing node or the second computing node sends an update program to the hard disk expansion controller through the hard disk expansion controller a fan control chip, and the first computing node and the second computing node obtain a fan status information of each fan through the hard disk expansion controller.

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