Abstract:
A server power system includes a backboard with a plurality of hard disk drive (HDD) units, a number of motherboards, and a number of power cables. The numbers of the HDD units, the motherboards, and the power cables are the same. Each HDD unit includes a number of HDDs. Each HDD of one HDD unit is coupled to a corresponding motherboard through a corresponding power cable. Each power cable includes a motherboard interface and an HDD interface. A ground pin and a power pin of the HDD interface are connected to a ground pin and a power pin of the motherboard interface correspondingly. The motherboard interface of each power cable is coupled to a power interface of the corresponding motherboard. The number of the power cables is selected to make the HDDs of each HDD unit coupled to the HDD interfaces of the corresponding power cables.

Description:
FIELD 
       [0001]    The present disclosure relates to a power system for a server. 
       BACKGROUND 
       [0002]    Multiple of hard disk drives (HDDs) are applied in a server. The HDDs are usually disposed on an HDD backboard, to be coupled to a corresponding motherboard in the server through a corresponding power cable. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0003]    Implementations of the present technology will now be described, by way of example only, with reference to the attached figures, wherein: 
           [0004]      FIG. 1  is a diagrammatic illustration of an embodiment of a backboard of a power system for a server. 
           [0005]      FIG. 2  is a diagrammatic illustration of an embodiment of a power cable of the power system for a server. 
           [0006]      FIG. 3  is a diagrammatic illustration of a first embodiment of HDD units of the server power system. 
           [0007]      FIG. 4  is a diagrammatic illustration of a second embodiment of HDD units of the server power system. 
           [0008]      FIG. 5  is a diagrammatic illustration of a third embodiment of HDD units of the server power system. 
       
    
    
     DETAILED DESCRIPTION 
       [0009]    Numerous specific details are set forth in order to provide a thorough understanding of the embodiments described herein. However, it will be understood by those of ordinary skill in the art that the embodiments described herein can be practiced without these specific details. In other instances, methods, procedures, and components have not been described in detail so as not to obscure the related relevant feature being described. Also, the description is not to be considered as limiting the scope of the embodiments described herein. The drawing is not necessarily to scale to better illustrate details and features of the present disclosure. 
         [0010]    Several definitions that apply throughout this disclosure will now be presented. 
         [0011]    The term “coupled” is defined as coupled, whether directly or indirectly through intervening components, and is not necessarily limited to physical connections. The connection can be such that the objects are permanently coupled or releasably coupled. The term “comprising,” when utilized, means “including, but not necessarily limited to”; it specifically indicates open-ended inclusion or membership in the so-described combination, group, series and the like. 
         [0012]      FIG. 1  illustrates a diagrammatic illustration of one embodiment of a backboard  10 . The backboard  10  includes twelve hard disk drives (HDDs)  11 , according to an array of three HDDs arranged in horizontal, and four HDDs arranged in longitudinal. 
         [0013]      FIG. 2  illustrates a diagrammatic illustration of one embodiment of a power cable  20  of a server power system  100 . The power cable  20  includes a motherboard interface P 1  and six HDD interfaces P 2 , P 3 , P 4 , P 5 , P 6 , and P 7 . The motherboard interface P 1  includes six power pins P 12 V_ 1 , P 5 V_ 1 , P 12 V 2 , P 5 V_ 2 , P 12 V_ 3 , and P 5 V_ 3 , and six ground pins GND 1 , GND 2 , GND 3 , GND 4 , GND 5 , and GND  6 . Each of the HDD interfaces P 2 , P 3 , P 4 , P 5 , P 6 , and P 7  includes two power pins P 12 V, P 5 V and two ground pins GND 1 , GND 2 . In one embodiment, the two power pins P 12 V, P 5 V of the HDD interface P 2  are coupled to the power pins P 12 V_ 1 , P 5 V_ 1  of the motherboard interface P 1 , respectively. The ground pins of GND  1 , GND 2  of the HDD interfaces P 2  are coupled to the ground pins GND 1 , GND 2  of the motherboard interface P 1 , respectively. The power pins P 12 V, P 5 V of the HDD interface P 3  are coupled to the power pins P 12 V_ 1 , P 5 V_ 1  of the motherboard interface P 1 , respectively. The ground pins GND 1 , GND 2  of the HDD interface P 3  are coupled to the ground pins GND 1 , GND 2  of the motherboard interface P 1 , respectively. The power pins P 12 V, P 5 V of the HDD interface P 4  are coupled to the power pins P 12 V 2 , P 5 V_ 2  of the motherboard interface P 1 , respectively. The ground pins GND 1 , GND 2  of the HDD interface P 4  are coupled to the ground pins GND 3 , GND 4  of the motherboard interface P 1 , respectively. The power pins P 12 V, P 5 V of the HDD interface P 5  are coupled to the power pins P 12 V 2 , P 5 V_ 2  of the motherboard interface P 1 , respectively. The ground pins GND 1 , GND 2  of the HDD interface P 5  are coupled to the ground pins GND 3 , GND 4  of the motherboard interface P 1 , respectively. The power pins P 12 V, P 5 V of the HDD interface P 6  are coupled to the power pins P 12 V_ 3 , P 5 V_ 3  of the motherboard interface P 1 , respectively. The ground pins GND 1 , GND 2  of the HDD interface P 6  are coupled to the ground pins GND 5 , GND 6  of the motherboard interface P 1 , respectively. The power pins P 12 V, P 5 V of the HDD interface P 7  are coupled to the power pins P 12 V_ 3 , P 5 V_ 3  of the motherboard interface P 1 , respectively. The ground pins GND 1 , GND 2  of the HDD interface P 7  are coupled to the ground pins GND 5 , GND 6  of the motherboard interface P 1 , respectively. 
         [0014]      FIG. 3  illustrates a diagrammatic illustration of a first embodiment of the server power system  100  with two HDD units  101 ,  102  divided on the backboard  10 . The server power system  100  includes two power cables  20  and two motherboards  104 , 105  coupled to the two HDD units  101 ,  102  through the two power cables  20 , respectively. Power ports of the motherboards  104 ,  105  are coupled to the corresponding motherboard interfaces P 1  of the two power cables  20 . Thus, the six ground pins GND 1 , GND 2 , GND 3 , GND 4 , GND 5 , and GND  6  of each power cable  20  are coupled to ground pins of each of the motherboards  104 ,  105 , respectively. The three power pins P 12 V_ 1 , P 12 V_ 2 , P 12 V_ 3  of the motherboard interface P 1  of each power cable  20  are coupled to power pins  12 V of each of the motherboards  104 ,  105 , respectively. The three power pins P 5 V_ 1 , P 5 V_ 2 , P 5 V_ 3  of the motherboard interface P 1  of each power cables  20  are coupled to power pins  5 V of each of the motherboards  104 ,  105 , respectively. Power ports of the six HDDs of each of the HDD units  101 ,  102  are coupled to the six HDD interfaces P 2 , P 3 , P 4 , P 5 , P 6 , and P 7  of each power cable  20 , respectively. Therefore, the motherboards  104 ,  105  can supply power to the HDD units  101 ,  102  through the power cables  20 , respectively. 
         [0015]      FIG. 4  illustrates a diagrammatic illustration of a second embodiment of the server power system  100  with three HDD units  201 ,  202 ,  203  divided on the backboard  10 . The server power system  100  includes three power cables  20  and three motherboards  204 ,  205 ,  206  coupled to the third HDD units  201 ,  202 ,  203  through the three power cables  20 , respectively. Power ports of the motherboards  104 ,  105  are coupled to the corresponding motherboard interfaces P 1  of the three power cables  20 . Thus, the six ground pins GND 1 , GND 2 , GND 3 , GND 4 , GND 5 , and GND  6  of each power cable  20  are coupled to ground pins of each of the motherboards  204 ,  205 ,  206 , respectively. The three power pins P 12 V_ 1 , P 12 V 2 , P 12 V_ 3  of the motherboard interface P 1  of each power cable  20  are coupled to power pins  12 V of each of the motherboards  204 ,  205 ,  206 , respectively. The three power pins P 5 V_ 1 , P 5 V_ 2 , P 5 V_ 3  of the motherboard interface P 1  of each power cable  20  are coupled to power pins  5 V of each of the motherboards  204 ,  205 ,  206 , respectively. Power ports of the six HDDs of each of the HDD units  201 ,  202 ,  203  are coupled to the six HDD interfaces P 2 , P 3 , P 4 , P 5 , P 6 , and P 7  of each power cable  20 , respectively. Therefore, the motherboards  204 ,  205 ,  206  can supply power to the HDD units  201 ,  202 ,  203  through the power cables  207 ,  208 ,  209 , respectively. 
         [0016]      FIG. 5  illustrates a diagrammatic illustration of a third embodiment of the server power system  100  with four HDD units  301 ,  302 ,  303 ,  304  divided on the backboard  10 . The server power system  100  includes four power cables  20  and four motherboards  305 ,  306 ,  307 ,  308  coupled to the two HDD units  301 ,  302 ,  303 ,  304  through four power cables  20 , respectively. Power ports of the motherboards  305 ,  306 ,  307 ,  308  are coupled to the corresponding motherboard interfaces P 1  of the four power cables  20 . Thus, the six ground pins GND 1 , GND 2 , GND 3 , GND 4 , GND 5 , and GND  6  of each power cable  20  are coupled to ground pins of each of the motherboards  305 ,  306 ,  307 ,  308 , respectively. The three power pins P 12 V_ 1 , P 12 V_ 2 , P 12 V_ 3  of the motherboard interface P 1  of each power cable  20  are coupled to power pins  12 V of each of the motherboards  305 ,  306 ,  307 ,  308 , respectively. The three power pins P 5 V_ 1 , P 5 V_ 2 , P 5 V_ 3  of the motherboard interface P 1  of each power cable  20  are coupled to power pins  5 V of each of the motherboards  305 ,  306 ,  307 ,  308 , respectively. Power ports of the six HDDs of each of the HDD units  301 ,  302 ,  303 ,  304  are coupled to the six HDD interfaces P 2 , P 3 , P 4 , P 5 , P 6 , and P 7  of each power cable  20 , respectively. In the embodiment, selecting three HDD interfaces P 2 , P 3 , P 4  of the six HDD interfaces of each of the power cables  20  to be coupled to the corresponding power ports of the four HDDs of each of the HDD units  301 ,  302 ,  303 ,  304 . Of course, any three HDD interfaces of the six HDD interfaces P 2 , P 3 , P 4 , P 5 , P 6 , P 7  can be selected to be coupled to the power ports of the three HDDs of the corresponding HDD unit. Therefore, the motherboards  305 ,  306 ,  307 ,  308  can supply power to the HDD units  301 ,  302 ,  303 ,  304  through the four power cables  20 , respectively. 
         [0017]    The embodiments shown and described above are only examples. Many details are often found in the art such as the other features of server power system a server power system. Therefore, many such details are neither shown nor described. Even though numerous characteristics and advantages of the present technology have been set forth in the foregoing description, together with details of the structure and function of the present disclosure, the disclosure is illustrative only, and changes may be made in the detail, especially in matters of shape, size and arrangement of the parts within the principles of the present disclosure up to, and including the full extent established by the broad general meaning of the terms used in the claims. It will therefore be appreciated that the embodiments described above may be modified within the scope of the claims.