TWI655547B - Multi-hard-disk storage apparatus - Google Patents

Abstract

A multi-disk storage device includes a plurality of hard disk controllers, a backplane, and an interface control board. The plurality of hard disk controllers are electrically coupled to the bottom plate, and the interface control board is electrically coupled to the bottom plate, so that the interface control board can determine each group of hard disk control in a grouping manner according to the received data. Turn the unit on and off.

Description

Multiple hard disk storage device

The present invention relates to a storage device, and more particularly to a storage device using a plurality of hard disks.

In areas where the network is developed, much of the information has been stored on the public nodes of the network, so that the storage itself or related parties can easily obtain the required information through the Internet. These public nodes for storing information are generally composed of one or more file servers. A file server can usually be divided into two parts, one part is the management part, which is the processor in the file server and the file management system operated in the processor, and the other part is the data storage part. That is the hard drive. Compared with the management part, the construction cost of the data storage part will be lower. Therefore, in order to achieve a large amount of information and simple management for less cost, each file server is usually connected to as many hard disks as possible to manage and access the most with the least management system. data of.

Therefore, in a storage device used as a file server, there are many hard disks at the same time. Once the storage device is required to be turned on, all hard disks in this storage device will also be turned on at the same time. Since the hard disk requires a large startup current when it is turned on, once all the hard disks are turned on at the same time, a very large current surge will occur at this moment. This current surge is easy for the power supply and related connections The circuit generates unrecoverable damage, which in turn reduces the reliability of the storage device and the entire file server.

In view of this, the present invention provides a multi-hard disk storage device that can turn on a hard disk in a time-division manner to achieve a distributed current load.

In one aspect, the present invention provides a multiple hard disk storage device including a plurality of hard disk controllers, a backplane, and an interface control board. The interface control board includes a plurality of network transmission ports and a central control chip group; each hard disk controller is adapted to control a corresponding one of the hard disks; the bottom plate includes a plurality of hard disk ports, a plurality of data lines, and a plurality of Control line. The central control chipset controls a plurality of control signals according to data received from the network transmission; each of the hard disk controllers is electrically coupled to one of the hard disk ports, and each hard disk port is connected to each other. Suitable for electrically coupling to a hard disk; the plurality of data lines are electrically coupled between the hard disk port and the network port, so that the hard disk controller controls the network transmission through the data line. And connecting the hard disk to each other to transfer data; the control lines are electrically coupled between the hard disk controller and the central control chip set, and each of the control lines is adapted to provide one of the foregoing control signals. The hard disk controller is turned on or off according to a control signal received from the coupled control line.

In one embodiment, the hard disk port is coupled to the data line in a one-to-one manner, and the hard disk controller is coupled to the control signal in a one-to-one manner. In another embodiment, the hard disk port is coupled to the data line in a one-to-one manner, and the hard disk controller is coupled to the control signal in a many-to-one manner.

In one embodiment, the bottom plate further includes a plurality of memory modules and a plurality of first state data lines, wherein the memory modules are disposed on the bottom plate, and the first state data lines are The electrical signals are electrically coupled between the hard disk controller and the memory module, and the status signals generated on the corresponding at least one hard disk controller are transmitted to the corresponding memory modules for storage as parameters.

In one embodiment, the bottom plate further includes a plurality of second state data lines electrically coupled between the interface control board and the memory module, and the foregoing parameters are used by the memory module. Provide to the interface control board.

In one embodiment, the multiple hard disk storage device further includes a fan pack. The fan pack is electrically coupled to the central control chip set and includes a plurality of fans. The central control chip set controls the state of each fan to be individually opened and closed according to the state in which the hard disk controller is individually turned on or off. Further, the central control chip set controls the state in which the fan group is opened and closed based on parameters obtained from the above-described memory module.

In one embodiment, the backplane further includes a plurality of extended wafers electrically coupled between the central control chipset and a portion of the hard disk controller. The central control chipset sends control signals corresponding to at least a portion of the hard disk controllers to one of the extension chips, and the extension chip receiving the control signals transmits the control signals to the corresponding hard disk controller.

In one embodiment, at least one of the hard disk controllers described above is a wafer disposed on a backplane.

In one embodiment, at least one of the hard disk controllers described above is a circuit board, and the bottom plate further includes a plurality of controller ports, and each of the controller ports is adapted to be electrically connected to a hard disk controller. Moreover, one side of the hard disk controller is locked to the corresponding one of the hard disks.

In one embodiment, at least one of the above-described hard disk controllers further includes a metal cover that partially or entirely covers the hard disk controller.

According to the above, the multi-disk storage device provided by the present invention can separately control the switches of the plurality of hard disks, so that the hard disks can be turned on without being concentrated at the same time point, thereby avoiding excessive transient current generation. With such a design, the overall reliability of the multi-disk storage device can be effectively improved.

10, 20, 60‧‧‧ multiple hard disk storage devices

50, 100‧‧‧ interface control board

55‧‧‧ prominent parts

105‧‧‧Signal bus

110, 400‧‧‧ bottom plate

112A, 112B, 112C, 112D, 112E, 112F‧‧‧ control lines

120A, 120B, 120C, 120D, 310‧‧‧ Hard disk controller

130A, 130B, 130C, 130D, 300‧‧‧ hard drives

500, 520, 522, 524, 526, 528, 530, 532‧‧‧ network connections埠

510‧‧‧Central Control Chipset

540‧‧‧Control line on the interface control board

550, 552, 554, 556, 558, 560, 562‧ ‧ interface data lines on the control panel

610, 612, 614, 616, 618, 620, 622, 624‧‧‧ fans

320‧‧‧Metal cover

3010‧‧‧ screw holes

3110‧‧‧Gold Finger

410‧‧‧storage unit connector

420‧‧‧Control board connector

430‧‧‧Lighting group

440‧‧‧ memory module

4100‧‧‧ Hard disk connection

4110‧‧‧Controller connection埠

4112‧‧‧Information line on the bottom plate

4114‧‧‧First status data line

4120‧‧‧Switch

4200‧‧‧Power connection埠

4210‧‧‧Interface control panel connection埠

4212‧‧‧Control line on the base plate

4214‧‧‧Light control line

4216‧‧‧Second state data line

C1, C2, C3, C4, C5, C6‧‧‧ control signals

DATA‧‧‧Information

Group of G1, G2‧‧‧ hard disk controllers

1 is a circuit block diagram of a multiple hard disk storage device in accordance with an embodiment of the present invention.

2 is a circuit block diagram of a multiple hard disk storage device in accordance with another embodiment of the present invention.

FIG. 3 is a schematic diagram showing a combined structure of a hard disk controller and a hard disk according to an embodiment of the invention.

4A is a schematic diagram showing a combined structure of a bottom plate and a hard disk controller according to an embodiment of the invention.

4B is a schematic view showing a combined structure of a base plate and a hard disk controller according to another embodiment of the present invention.

5 is a circuit block diagram of an interface control board in accordance with an embodiment of the present invention.

FIG. 6 illustrates a multiple hard disk storage device in accordance with an embodiment of the present invention.

Please refer to FIG. 1, which is a circuit block diagram of a multiple hard disk storage device according to an embodiment of the invention. The multiple hard disk storage device 10 in this embodiment can access four hard disks 130A, 130B, 130C, and 130D, and includes an interface control board 100, a bottom plate 110, and four hard disk controllers 120A, 120B, 120C, and 120D. The hard disk controller 120A controls the operation of the hard disk 130A (for example, reading or writing), the hard disk controller 120B controls the operation of the hard disk 130B, and the hard disk controller 120C controls the operation of the hard disk 130C. The hard disk controller 120D controls the hard disk controller 120D. The operation of the hard disk 130D. Moreover, the hard disk controllers 120A, 120B, 120C and 120D are each operated independently. The circuit is, for example, a system on chip (SoC) or a circuit board. Moreover, when the hard disk controllers 120A, 120B, 120C, and 120D are turned off, the corresponding controlled hard disks 130A, 130B, 130C, and 130D are stopped; when the hard disk controllers 120A, 120B, 120C, and 120D are turned on. At this time, the corresponding controlled hard disks 130A, 130B, 130C, and 130D start to start and enter a normal operation state. In the present invention, each of the hard disk controllers may be implemented in a wafer or all of them in a circuit board, or may be partially implemented in a wafer and partially implemented in a circuit board.

In this embodiment, the interface control board 100 determines the output control signals C1, C2, C3, and C4 according to the received data DATA, and is electrically coupled to the backplane 110 through the signal bus bar 105 to respectively control the signal C1. C2, C3, and C4 are provided to corresponding control lines 112A, 112B, 112C, and 112D. Control lines 112A, 112B, 112C, and 112D are disposed on the backplane 110 and are designed to allow electrical coupling with the interface control board 100; in addition, the control line 112A is further designed to allow electrical compatibility with the hard disk controller 120A. Coupling, control line 112B is designed to allow electrical coupling with hard disk controller 120B, control line 112C is designed to allow electrical coupling with hard disk controller 120C, and control line 112D is designed to allow with hard disk The controller 120D is electrically coupled. By cooperation with the signal bus 105, the control line 112A can transfer the control signal C1 from the interface control board 100 to the hard disk controller 120A, and the control line 112B can transfer the control signal C2 from the interface control board 100 to the hard disk controller. 120B, control line 112C can transmit control signal C3 from interface control board 100 to hard disk controller 120C, while control line 112D can transmit control signal C4 from interface control board 100 to hard disk controller 120D. From another perspective, the interface control board 100 can transmit control signals C1, C2, C3, and C4 to the hard disk controllers 120A, 120B, 120C, and 120D, respectively, to control signals C1, C2, C3, and C4, respectively. To control whether the hard disk controllers 120A, 120B, 120C, and 120D should be turned on or should be turned off.

It should be noted that the above embodiment controls the opening and closing in units of one hard disk controller, that is, the control is divided into four groups for opening and closing, and each group is controlled. Each contains a hard disk controller. However, this is not a necessary limitation of the technology of the present invention. In contrast, the technology provided by the present invention can change the number of hard disk controllers that can be controlled at a time according to actual needs.

Please refer to FIG. 2, which is a circuit block diagram of a multiple hard disk storage device 20 according to another embodiment of the present invention. In the present embodiment, the same components as those in FIG. 1 are denoted by the same reference numerals, and the functions of the components are similar to those shown in FIG. 1 and therefore will not be described again. In the present embodiment, the larger difference from the previous embodiment is that the interface control board 100 controls the turning on and off of the four hard disk controllers 120A, 120B, 120C, and 120D with only two control signals C5 and C6. From another perspective, the four hard disk controllers 120A, 120B, 120C, and 120D are divided into two groups G1 and G2. The control signal C5 is transmitted from the interface control board 100 to the hard disk controllers 120A and 120B via the signal bus 105 and the control line 112E provided on the backplane, thereby simultaneously controlling whether to turn the hard disk controller 120A on or off. Similar to 120B; similarly, the control signal C6 is transmitted from the interface control board 100 to the hard disk controllers 120C and 120D via the signal bus 105 and the control line 112F provided on the backplane, thereby simultaneously controlling whether to turn on or off. Hard disk controllers 120C and 120D. In this way, partition control can be implemented to turn on or off the hard disk in units of two hard disk controllers.

Of course, each group does not have to be limited to only include the above number of hard disk controllers, and is not necessarily limited to having to include the same number of hard disk controllers. In fact, each group can contain at least one hard disk controller, and the number of hard disk controllers included does not need to be equal to the number of hard disk controllers included with other groups.

Next, the structure of each element and its composition will be described in detail. Please refer to FIG. 3, which is a schematic diagram of a hard disk controller according to an embodiment of the invention. In this embodiment, a hard disk The controller 310 is locked together by using screws (not shown) and screw holes 3010 on the corresponding hard disk 300. Wherein, the hard disk controller 310 is a circuit board and has a gold finger 3110 adapted to be inserted into the slot to receive an electronic signal from the outside and transmit it to the hard disk controller 310, or to be in the hard disk controller 310. The electronic signal is transmitted to the outside world.

Please refer to FIG. 4A, which is a schematic diagram of a combined structure of a bottom plate and a hard disk controller according to an embodiment of the invention. In this embodiment, a plurality of storage unit connectors 410 (only three are shown), one control panel connector 420, one light group 430, and a plurality of memory modules 440 are disposed on the bottom plate 400 (only one is shown) ), a plurality of data lines 4112 (only one shown), a plurality of control lines 4212 (only one shown), a plurality of first status data lines 4114 (only one shown), and a plurality of second status data lines 4216 ( Only one is shown) and a plurality of light control lines 4214 (only one shown). In order to cooperate with the hard disk 300 and the hard disk controller 310 shown in FIG. 3, each of the storage unit connectors 410 includes a hard disk port 4100 and a controller port 4110, and a hard disk port. The 4100 and the controller port 4110 are both formed in the form of a board slot for mounting the hard disk 300 and the hard disk controller 310, and the circuit is routed between the hard disk port 4100 and the controller port 4110. Signal transfer is implemented so that electronic signals can be passed between the hard disk port 4100 and the controller port 4110. When the hard disk 300 and the hard disk controller 310 are locked together as shown in FIG. 3, the hard disk 300 can be inserted into the hard disk port 4100, and the hard disk controller 310 can be inserted into the controller port 4110. . In this way, the hard disk controller 310 can control the hard disk 300 by using the controller connection 1104110, the hard disk connection 埠4100, and the circuit connected between the two ports. In other words, the hard disk 300 and the hard disk controller 310 that are locked together are not directly signal-transmitted but are realized by a hard disk connection 埠 4100 provided on the bottom plate 400, a controller connection 埠 4110, and a circuit trace. Signal transmission between people. In another embodiment, the hard disk controller 310 can be a chip integrated on the backplane 400, which is not required in the storage unit connector 410. The controller is connected to the port 4110, and the hard disk controller 310 performs signal transmission between the two through its circuit traces to the hard disk port 4100.

In this embodiment, the bottom plate 400 is electrically coupled to the interface control board 100 shown in FIG. 1 through the control board connector 420. Specifically, in the present embodiment, the control board connector 420 includes a power supply port 4200 and an interface control board port 4210, and the power port 4200 is connected to a power supply (not shown) to receive and transmit power to the backplane. The electronic components disposed on the 400 may further provide power to the electronic components electrically coupled to the backplane 400. The interface control board port 4210 is adapted to be directly coupled to the signal bus bar 105 shown in FIG. 1, or may be directly coupled to the interface control board 100 shown in FIG. 1 (ie, the signal bus bar 105 is omitted). In general, the control signals C1, C2, C3, and C4 generated by the interface control board 100 can be started from the interface control board 100, connected to the interface 4210 via the interface control board, and connected to the interface control board port 4210 and the controller. The control line 4212 between the ports 4110 is transferred to the corresponding controller port 4110 and further to the corresponding hard disk controller 310. It should be noted that for simplicity and clarity of the drawing, only one control line 4212 is drawn in the figure, but in practice, in the present embodiment, a control line is provided for each storage unit connector 410 on the base plate 400. And each such control line is independent and does not intersect with the control line that controls other hard disk controllers.

In the embodiment shown in FIG. 4A, the control signals C1 - C4 can respectively control the opening or closing of the corresponding hard disk controller 310. Once controlled to be turned off, power is not supplied to the hard disk controller 310 and the hard disk 300 controlled by the hard disk controller 310. In another embodiment, referring to FIG. 4B, control signals C1 - C4 may also be provided to switch 4120 in storage unit connector 410 via control line 4212 to control whether switch 4120 is turned "on". Once the switch 4120 is turned off, power is not supplied to the corresponding storage unit connector 410, and the hard disk controller 310 and hard disk coupled to the storage unit connector 410 are connected thereto. 300, it will stop working because there is no supply of electricity. In contrast, if the switch 4120 is turned on, power is supplied to the corresponding storage unit connector 410 (eg, through a power cord not shown in the drawing), which is coupled to the storage unit connector 410 at this time. The hard disk controller 310 and the hard disk 300 will start to operate due to the supply of power.

Please return to Figure 4A. In this embodiment, a plurality of data lines 4112 are electrically coupled between each hard disk port 4100 and the interface control board port 4210 (for simplicity of the drawing, only the figure is shown in the figure). A data line 4112); whereby the data line 4112 can transfer data between the hard disk 300 and the interface control board under the control of the hard disk controller 310. In addition, a plurality of first state data lines 4114 are electrically coupled between each controller port 4110 and the corresponding memory module 440 (for simplicity of the drawing, only the figure is drawn on the figure). One of the first state data lines 4114 and one memory module 440); thereby, the first state data line 4114 can indicate some of the hard disk controller 300 or the hard disk controller 310 generated on the corresponding hard disk controller 310. The status signal of the state, for example, whether the hard disk 300 is in operation and a status signal such as hard disk temperature or capacity, is transmitted from the hard disk controller 310 to the memory module 440. The memory module 440 stores the parameters represented by the foregoing status signals and is electrically coupled to the memory module 440 and the interface when the interface control board requests the parameters or after a period of time. The control board is connected to the second status data line 4216 between the ports 4210 to provide parameters to the interface control board for the interface control board to determine how to control the operation of the entire multi-disk storage device, for example, by electrical coupling to the interface control. A light control line 4214 between the board connector 4210 and the light group 430 controls the lighting pattern of each of the light groups 430 to indicate which of the plurality of hard disks 300 are activated, or is controlled by other control lines. The opening and closing of each of the fan groups (not shown) for dissipating heat is performed in conjunction with the number or position of the hard disk 300 being activated. In the present invention The plurality of memory modules 440 can be individually coupled to a portion of the plurality of controller ports 4110.

Next, please refer to FIG. 5, which is a circuit block diagram of an interface control board according to an embodiment of the invention. In the present embodiment, the interface control board 50 includes a central control chip set 510, a plurality of network ports 500 and 520-532, a plurality of data lines 550-562, and a control line 540. Each of the network ports 埠500 and 520-532 is electrically coupled to a corresponding network connection hole (for example, an RJ-45 connection hole) to interact with the outside world. In addition, it should be noted that although in the present embodiment only the data lines 550-562 and the control line 540 are represented by one line, in fact, one or more of the data lines 550-562 and the control line 540 may be A bus bar is not limited to a single line.

In this embodiment, the data received from the network port 500 is passed to the central control chip set 510, and the central control chip set 510 determines which must be activated based on the data received from the network port 500. A hard disk and the correct control signals (such as the aforementioned control signals C1~C4) are generated on the control line 540 to control the opening and closing of the hard disk by transmitting control signals through the control lines on the substrate. In order to cooperate with the bottom plate shown in Fig. 4A or Fig. 4B, the present embodiment provides a gold finger-like projection 55 on the interface control panel 50. The protruding portion 55 can be inserted into the interface control board connector 4210 shown in FIG. 4A or FIG. 4B, so that the data lines 520-532 are electrically coupled to the data line 4112 on the bottom plate in a one-to-one manner, and The control line 540 is electrically coupled to the control line 4212 and the light control line 4214 and the second status data line 4216 or a fan group, a power supply (not shown), and the like. In this way, the central control chipset 510 can separately control the opening and closing of each hard disk using the manner previously described; and after the hard disk is turned on, the data taken out by the hard disk and the data to be accessed into the hard disk. Data, you can directly connect to the network 埠 520 ~ 532, data line 550 ~ The 562 and the corresponding connected data line on the backplane (for example, the data line 4112 in FIG. 4A) are bidirectionally transmitted.

By combining the above-described hard disk, hard disk controller, backplane, and interface control board, a multi-disk storage device using the technology of the present invention can be obtained. Please refer to FIG. 6, which is a multi-disk storage device 60 according to an embodiment of the invention. In the present embodiment, the multi-disk storage device 60 is provided with a metal cover 320 on the hard disk controller 310 in addition to the hard disk controller, the backplane and the interface control board presented in the above embodiments. The hard disk 300, the hard disk controller 310 and the metal cover 320 may together form a hard disk module 600. One side of the hard disk controller 310 is locked to the corresponding hard disk 300, and the other side of the hard disk controller 310 is partially or entirely covered by the metal cover 320. The metal cover 320 covers part or all of the hard disk controller 310 and is disposed between the hard disk controller 310 and an adjacent other hard disk module. Thereby, the metal cover 320 can shield the influence of the electronic signals of the hard disk or the hard disk controller in the other hard disk module on the hard disk controller 310 (for example, electromagnetic interference), so that the hard disk modules can be more closely Arranged together without affecting each other. Another advantage of forming the hard disk 300, the hard disk controller 310 and the metal cover 320 into a hard disk module 600 is that when one of the hard disk or hard disk controllers in the multiple hard disk storage device 60 fails, only You need to replace the hard disk module, no need to move to the entire backplane, interface control board or all other hard drives. In another embodiment of the present invention, the hard disk module 600 may not include the metal cover 320, so that there is still an advantage of facilitating maintenance and replacement. In addition, among the multiple hardware storage devices 60, a fan group is also provided, which includes eight fans 610-624, and the fans 610-624 are in the manner set forth in the previous embodiment. Electrically coupled to the central control chip set to be controlled by the central control chip set to determine its on or off state. In still another embodiment of the present invention, the multiple hard disk storage device 60 may include a plurality of bottom plates 400, a plurality of corresponding interface control boards 50, and a plurality of corresponding hard disks. Module 600, wherein each of the backplanes 400 and each of the corresponding interface control panels 50 operate in the manner set forth in the previous embodiments.

In order to effectively increase the number of hard disks that can be installed in the same multi-disk storage device, it is also possible to further provide a GPIO (General Purpose Input) using a plurality of I ² C (Inter-Integrated Circuit) interfaces on the substrate. Output, general purpose input and output) expansion chip. At this time, each GPIO expansion chip can be electrically coupled between the central control chipset of the interface control board and a portion of the hard disk controller. At this time, when the central control chipset sends a control signal to this part of the hard disk controller, the control signal is first transmitted to the GPIO expansion chip, and then the GPIO expansion chip selects the correct hard disk. The controller transmits control signals to the selected hard disk controller.

According to the above, since each hard disk can be independently controlled to be turned on and off, when a certain hard disk is not needed, the corresponding hard disk controller or switch can be turned off to stop the rotation of the hard disk. This achieves the effect of power saving. In addition, when multiple hard disks need to be booted at the same time, only one of the hard disks can be booted at a time, and then the other hard disks are started after a while. For example, when you need to boot 15 hard drives, you can start 5 hard drives first, then another 5 hard drives after 3 seconds, and then start the last 5 after 3 seconds. Hard disk. This can effectively reduce the peak value of the instantaneous current.

According to the above, the multi-disk storage device provided by the present invention can separately control the switches of the plurality of hard disks, so that the hard disks can be turned on without being concentrated at the same time point, thereby avoiding excessive transient current generation. With such a design, not only the overall reliability of the multi-disk storage device can be effectively improved, but also the opportunity to reduce the power consumption. In addition, modularizing the hard disk with the hard disk controller can also facilitate maintenance and replacement.

Claims (10)

A multi-disk storage device, comprising: an interface control board, comprising: a plurality of network transmission ports; and a central control chip group for controlling a plurality of control signals according to data received from the network transmission ports a plurality of hard disk controllers, each of the hard disk controllers being adapted to control a hard disk according to one of the control signals; and a bottom plate electrically coupled to the interface control board, including: a plurality of hard disks Each of the hard disk controllers is electrically coupled to one of the hard disk ports, wherein each of the hard disk ports is electrically connected to a hard disk; The data lines are electrically coupled between the hard disk ports and the network ports, so that the hard disk controllers control the network transmissions, and the data lines and the The hard disk is connected to each other to transmit data; and a plurality of control lines are electrically coupled between the hard disk controller and the central control chip set, each of the control lines being adapted to provide the One of the control signals, wherein the hard disk controls It is switched on or off is determined according to the control signal received from the control line is coupled. The multi-disk storage device of claim 1, wherein the hard disk ports are coupled to the data lines in a one-to-one manner, and the hard disk controllers are one-to-one. The manner is correspondingly coupled to the control signals. The multi-disk storage device of claim 1, wherein the hard disk ports are coupled to the data lines in a one-to-one manner, and the hard disk controllers are in many-to-one. The manner is correspondingly coupled to the control signals. The multi-disk storage device of claim 1, wherein the bottom plate further comprises a plurality of memory modules and a plurality of first state data lines, wherein the memory modules are disposed on the bottom plate. The first state data lines are electrically coupled between the hard disk controllers and the memory modules, and transmit the status signals generated on the corresponding at least one hard disk controller to the corresponding memory modules. Groups are stored as parameters. The multi-disk storage device of claim 4, wherein the bottom plate further comprises a plurality of second state data lines, wherein the second state data lines are electrically coupled to the interface control board and the memories, respectively. Between the body modules, the parameters are provided by the memory modules to the interface control board. The multi-disk storage device of claim 1, further comprising a fan set electrically coupled to the central control chip set and including a plurality of fans, wherein the central control chip set is The state in which the hard disk controller is individually turned on or off controls the state in which the fans in the fan group are individually turned on and off. The multi-disk storage device of claim 1, wherein the bottom plate further comprises a plurality of extended chips, the extended chips being electrically coupled to the central control chip set and a portion of the hard Between the disc controllers, wherein the central control chip group sends the control signal corresponding to a part of the hard disk controllers to one of the extension chips, and the extension chip transmits the control signal to the corresponding portion of the hard disk Controller. The multi-disk storage device of claim 1, wherein at least one of the hard disk controllers is a chip disposed on the substrate. The multi-disk storage device of claim 1, wherein at least one of the hard disk controllers is a circuit board, and wherein the bottom plate further comprises a plurality of controller ports, wherein each of the controls The connector port is adapted to be electrically connected to a hard disk controller, wherein one side of the hard disk controller is locked to the hard disk controlled by the hard disk controller. The multi-disk storage device of claim 9, wherein at least one of the hard disk controllers further comprises a metal cover that partially or completely covers the other side of the hard disk controller.