Patent Publication Number: US-RE48588-E

Title: Storage unit combining module capable of loading several storage units, storage unit moving suit and related server apparatus having several storage unit combining modules

Description:
BACKGROUND OF THE INVENTION 
     1. Field of the Invention 
     The present invention relates to a server apparatus capable of loading a plurality of storage units, and more particularly, to a storage unit combining module Capable of loading a plurality of storage units, and a storage unit moving suit and a related server apparatus having a plurality of storage unit combining modules. 
     2. Description of the Prior Art 
     A conventional 4U tower-typed server apparatus only loads thirty-two hard disk units within the apparent surface area of the server apparatus due to universal constraint of the housing. The housing of the 4U server apparatus includes eight frames disposed close to each other, and each frame can load four hard disk units arranged in parallel. The 4U server apparatus has four hard disk backboards respectively disposed on the same plane on a rear of the frame, and each hard disk backboard covers scope of two frames. Eight hard disk connectors are disposed on an outer surface of the hard disk backboard side by side, to vertically connect with the adjacent eight hard disk units at most. A vent hole is formed on position of the hard disk backboard between the adjacent hard disk connectors for heat dissipation. A power connector and a signal connector are disposed on an inner surface of the hard disk backboard. The signal connector can be connected to a RAID card for establishing connection between the hard disk backboard and the RAID card, and further can be connected to a mainboard by the cable. The power connector is connected to the mainboard by the cable. 
     Shortcomings of the conventional 4U tower-typed server apparatus is that the hard disk units are arranged in the frame side by side to expose the same edges of the whole hard disk units through the front of the frame, the user can watch all the hard disk units in a front view and conveniently remove or insert one or more hard disk units into the frames, so that an amount of the hard disk unit is constrained by the apparent surface area of the server apparatus. Moreover, circuit allocation space on the hard disk backboard is decreased because of the vent holes, and electronic components are difficult to lay on the hard disk backboard in double-sided product process to detour the vent holes. Therefore, the hard disk backboard of the conventional 4U tower-typed server apparatus is applied to load eight hard disk units, and has drawbacks of huge volume, difficult product process, expensive cost and inconvenient repair and replacement. 
     SUMMARY OF THE INVENTION 
     The present invention provides a storage unit combining module Capable of loading a plurality of storage units, and a storage unit moving suit and a related server apparatus having a plurality of storage unit combining modules for solving above drawbacks. 
     According to the claimed invention, a storage unit combining module capable of simultaneously loading a first storage unit, a second storage unit and a third storage unit is disclosed. The storage unit combining module includes a base and a circuit backboard. The base includes a first positioning zone, a second positioning zone and a third positioning zone and defines a first inserting direction and a second inserting direction crossed each other. Stretching directions of the first positioning zone and the second positioning zone are parallel to the first inserting direction, and the first positioning zone is neighbored with the second positioning zone in the second inserting direction. A stretching direction of the third positioning zone is parallel to the second inserting direction and neighbored with identical lateral sides of the first positioning zone and the second positioning zone in the first inserting direction. The circuit backboard is disposed on the base. The circuit backboard includes a first section and a second section connected to each other. The first section is located between the third positioning zone and the identical lateral sides of the first positioning zone and the second positioning zone and stretches toward a direction opposite to the second inserting direction. The second section stretches toward the first inserting direction and is neighbored with a side of the third positioning zone. The circuit backboard includes a first connector disposed on a position of the first section neighbored with and facing the first positioning zone, a second connector disposed on a position of the first section neighbored with and facing the second positioning zone, a third connector disposed on a position of the second section neighbored with and facing the third positioning zone, and a signal adapter for connecting with a pass-through interface card. The first storage unit is adapted to connect with the first connector in the first inserting direction through the first positioning zone, the second storage unit is adapted to connect with the second connector in the first inserting direction through the second positioning zone, and the third storage unit is adapted to connect with the third connector in the second inserting direction through the third positioning zone. 
     According to the claimed invention, a storage unit moving suit includes a carrying frame, a pass-through interface card and at least one storage unit combining module. The carrying frame has an accommodating space. The pass-through interface card is disposed on a side of the carrying frame. The at least one storage unit combining module is disposed inside the accommodating space of the carrying frame and capable of simultaneously loading a first storage unit, a second storage unit and a third storage unit. The at least one storage unit combining module includes a base and a circuit backboard. The base includes a first positioning zone, a second positioning zone and a third positioning zone and defines a first inserting direction and a second inserting direction crossed each other. Stretching directions of the first positioning zone and the second positioning zone are parallel to the first inserting direction, and the first positioning zone is neighbored with the second positioning zone in the second inserting direction. A stretching direction of the third positioning zone is parallel to the second inserting direction and neighbored with identical lateral sides of the first positioning zone and the second positioning zone in the first inserting direction. The circuit backboard is disposed on the base. The circuit backboard includes a first section and a second section connected to each other. The first section is located between the third positioning zone and the identical lateral sides of the first positioning zone and the second positioning zone and stretches toward a direction opposite to the second inserting direction. The second section stretches toward the first inserting direction and is neighbored with a side of the third positioning zone. The circuit backboard includes a first connector disposed on a position of the first section neighbored with and facing the first positioning zone, a second connector disposed on a position of the first section neighbored with and facing the second positioning zone, a third connector disposed on a position of the second section neighbored with and facing the third positioning zone, and a signal adapter for connecting with a pass-through interface card. The first storage unit is adapted to connect with the first connector in the first inserting direction through the first positioning zone, the second storage unit is adapted to connect with the second connector in the first inserting direction through the second positioning zone, and the third storage unit is adapted to connect with the third connector in the second inserting direction through the third positioning zone. 
     According to the claimed invention, a server apparatus includes a housing, a mainboard and at least one storage unit moving suit. The mainboard is disposed inside the housing. The at least one storage unit moving suit is loaded inside the housing and capable of being pulled or pushed relative to the housing. The at least one storage unit moving suit includes a carrying frame, a pass-through interface card and at least one storage unit combining module. The carrying frame has an accommodating space. The pass-through interface card is disposed on a side of the carrying frame. The at least one storage unit combining module is disposed inside the accommodating space of the carrying frame and capable of simultaneously loading a first storage unit, a second storage unit and a third storage unit. The at least one storage unit combining module includes a base and a circuit backboard. The base includes a first positioning zone, a second positioning zone and a third positioning zone and defines a first inserting direction and a second inserting direction crossed each other. Stretching directions of the first positioning zone and the second positioning zone are parallel to the first inserting direction, and the first positioning zone is neighbored with the second positioning zone in the second inserting direction. A stretching direction of the third positioning zone is parallel to the second inserting direction and neighbored with identical lateral sides of the first positioning zone and the second positioning zone in the first inserting direction. The circuit backboard is disposed on the base. The circuit backboard includes a first section and a second section connected to each other. The first section is located between the third positioning zone and the identical lateral sides of the first positioning zone and the second positioning zone and stretches toward a direction opposite to the second inserting direction. The second section stretches toward the first inserting direction and is neighbored with a side of the third positioning zone. The circuit backboard includes a first connector disposed on a position of the first section neighbored with and facing the first positioning zone, a second connector disposed on a position of the first section neighbored with and facing the second positioning zone, a third connector disposed on a position of the second section neighbored with and facing the third positioning zone, and a signal adapter for connecting with a pass-through interface card. The first storage unit is adapted to connect with the first connector in the first inserting direction through the first positioning zone, the second storage unit is adapted to connect with the second connector in the first inserting direction through the second positioning zone, and the third storage unit is adapted to connect with the third connector in the second inserting direction through the third positioning zone. 
     The storage unit combining module and the related storage unit moving suit of the present invention can increase the loading amounts of the storage unit while volume of the server apparatus is unvaried. The circuit backboard of the storage unit combining module does not have the vent holes to increase circuit allocation space on the circuit backboard. The hard disk connector, the power connector and the signal connector are not disposed on two surfaces of the circuit backboard, and the single-sided product process can be applied to effectively economize manufacture cost of the circuit backboard. The storage unit moving suit is connected to the mainboard by the flexible cable, so the storage unit moving suit can be pulled out and pushed into the housing for replacement of the storage units while the server apparatus is in normal operation. Each storage unit combining module is matched with three storage units, and a quantity of the hard disks within the server apparatus can be highly changeable for customized demand. 
     These and other objectives of the present invention will no doubt become obvious to those of ordinary skill in the art after reading the following detailed description of the preferred embodiment that is illustrated in the various figures and drawings. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  and  FIG. 2  respectively are diagrams of a server apparatus with storage unit moving suits in different operational modes according to an embodiment of the present invention. 
         FIG. 3  is a diagram of the server apparatus without the storage unit moving suit according to the embodiment of the present invention. 
         FIG. 4  and  FIG. 5  respectively are diagrams of the storage unit moving suit with storage unit combining modules in different views according to the embodiment of the present invention. 
         FIG. 6  and  FIG. 7  respectively are diagrams of the storage unit moving suit without the storage unit combining module in different views according to the embodiment of the present invention. 
         FIG. 8  is a diagram of the storage unit combining module with storage units according to the embodiment of the present invention. 
         FIG. 9  is a diagram of the storage unit combining module without the storage unit according to the embodiment of the present invention. 
         FIG. 10  is a diagram of the storage unit with a storing component according to the embodiment of the present invention. 
         FIG. 11  is a diagram of the storage unit without the storing component according to the embodiment of the present invention. 
     
    
    
     DETAILED DESCRIPTION 
     Please refer to  FIG. 1  to  FIG. 3 .  FIG. 1  and  FIG. 2  respectively are diagrams of a server apparatus  10  with several storage unit moving suits  20  in different operational modes according to an embodiment of the present invention.  FIG. 3  is a diagram of the server apparatus  10  without the storage unit moving suit  20  according to the embodiment of the present invention. The server apparatus  10  includes a housing  12 , a mainboard  14 , a heat dissipating module  16  and a bridging frame  18 . The mainboard  14  is disposed on a rear of the housing  12 , the bridging frame  18  is disposed on a front of the housing  12 , and the heat dissipating module  16  is located between the mainboard  14  and the bridging frame  18 . Further, the bridging frame  18  can be disposed on the rear of the housing  12  to locate the mainboard  14  between the heat dissipating module  16  and the bridging frame  18 . A plurality of storage unit moving suits  20  can be simultaneously loaded inside the bridging frame  18 , and the embodiment installs two storage unit moving suits  20 , but not limited to, inside the bridging frame  18 . A gap between the bridging frame  18  and the housing  12  can be utilized to dispose a datum reading module  22 , such as an optical disk drive. The heat dissipating module  16  includes a plurality of fan units  24  respectively aligning with the storage unit moving suits  20  and/or the mainboard  14 , to dissipate heat generated from the storage unit moving suits  20  and the mainboard  14  by cooling airflow of the heat dissipating module  16 . 
     The server apparatus  10  further includes a pass-through interface card and a slide rail structure  28 , and the pass-through interface card is a RAID (redundant array of independent disks) card  32 . The slide rail structure  28  is disposed between the bridging frame  18  and storage unit moving suit  20  (which is loaded inside a carrying frame  30  shown in  FIG. 4  to  FIG. 7 ), and the storage unit moving suit  20  can move relative to the bridging frame  18  by the slide rail structure  28  to pull out or to push the storage unit moving suit  20  into the housing  12 . The RAID card  32  is disposed on the storage unit moving suit  20  (which can be shown in  FIG. 4  to  FIG. 7 ), and can move along the slide rail structure  28  with a movement of the storage unit moving suit  20 . In the embodiment of the present invention, the RAID card  32  is disposed on a back of the storage unit moving suit  20 ; however, in another embodiment, the RAID card  32  can be disposed on a bottom of the storage unit moving suit  20 , which means position of the RAID card  32  is varied according to position of a signal adapter  72  of the storage unit combining module  34 , as shown in  FIG. 8 . In addition, the RAID card  32  is electrically connected to the mainboard  14  via a flexible cable  88 . The flexible cable  88  preferably detours the heat dissipating module  16 , and two ends of the flexible cable  88  can be electrically connected to the mainboard  14  and the RAID card  32 . Due to deflection and stretchability of the flexible cable  88 , the storage unit moving suit  20  can be arbitrarily pulled out of the housing  12  (or out of the bridging frame  18 ) for repair of inner components (such as replacing the hard disk) while the server apparatus  10  is in normal operation 
     Please refer to  FIG. 1  to  FIG. 7 .  FIG. 4  and  FIG. 5  respectively are diagrams of the storage unit moving suit  20  with the storage unit combining module  34  in different views according to the embodiment of the present invention.  FIG. 6  and  FIG. 7  respectively are diagrams of the storage unit moving suit  20  without the storage unit combining module  34  in different views according to the embodiment of the present invention. The storage unit moving suit  20  includes a carrying frame  30  and the RAID card  32 . The carrying frame  30  includes a plurality of guiding slots  36 , a bottom slab  38 , two lateral slabs  40  and two blocking slabs  42 . The lateral slabs  40  are symmetrically connected to sides of the bottom slab  38  to form a U-shaped accommodating space  90 . The blocking slabs  42  are respectively crossed between the lateral slabs  40 , such as covering a top and a rear of the accommodating space  90 , to prevent the storage unit combining module  34  from being separated from the accommodating space  90 . The plurality of guiding slots  36  is disposed on the bottom slab  38  and/or the top blocking slab  42  (disposed on the top of the accommodating space  90 ). The storage unit combining module  34  is slidably disposed inside the carrying frame  30  by the guiding slots  36 . A plurality of heat dissipating holes  44  can be respectively formed on the blocking slabs  42  and/or the bottom slab  38 . 
     In the embodiment, the storage unit combining module  34  can move from a front opening of the carrying frame  30  into the carrying frame  30  via the guiding slot  36  while the top blocking slab  42  is assembled with the two lateral slabs  40 , so as to connect the storage unit combining module  34  with the RAID card  32 . Further, the storage unit combining module  34  can move down from a top opening of the carrying frame  30  to set into the carrying frame  30  while the accommodating space  90  is not sealed, and then the top blocking slab  42  is assembled with the two lateral slabs  40  after the storage unit combining module  34  aligns with the corresponding guiding slot  36  to connect with the RAID card  32 . The heat dissipating holes  44  formed on the carrying frame  30  respectively align with the storage units  54 , and heat generated by each storage unit  54  (which can be shown in  FIG. 8  to  FIG. 11 ) of the storage unit combining module  34  can be effectively dissipated through the heat dissipating holes  44  for preferred heat dissipation efficiency. 
     Besides, the top blocking slab  42  is substantially parallel to the bottom slab  38 , and dimensions of the top blocking slab  42  is smaller than dimensions of the bottom slab  38 . The storage units  54  (which can be shown in  FIG. 8  to  FIG. 11 ) of the storage unit combining module  34  can be moved into or out of the storage unit moving suit  20  in different assembling/disassembling directions through the front opening  301  and the top opening  302  of the carrying frame  30   
     The RAID card  32  is disposed on a rear of the carrying frame  30 , such as the rear of the accommodating space  90 . A plurality of sockets  46  is disposed on a surface of the RAID card  32  facing the carrying frame  30  for connecting with the signal adapter  72  (which can be shown in  FIG. 8  and  FIG. 9 ) of the storage unit combining module  34 , and an amount of the socket  46  corresponds to an amount of the storage unit combining module  34 . In the embodiment, the RAID card  32  has eight sockets  46 , but not limited to, and the storage unit moving suit  20  can load eight storage unit combining modules  34  accordingly. A power connector  48  and a signal connector  50  are disposed on the other surface of the RAID card  32  opposite to the carrying frame  30 . The power connector  48  and the signal connector  50  are electrically connected to the mainboard  14  by the flexible cable  88 . The carrying frame  30  further includes a handling component  52  disposed on a front of the carrying frame  30 . A user can grasp the handling component  52  to move the storage unit moving suit  20  relative to the bridging frame  18  along the slide rail structure  28 , so as to pull the storage unit moving suit  20  out or to push the storage unit moving suit into the housing  12 . 
     Please refer to  FIG. 1  to  FIG. 11 .  FIG. 8  is a diagram of the storage unit combining module  34  with the storage unit  54  according to the embodiment of the present invention.  FIG. 9  is a diagram of the storage unit combining module  34  without the storage unit  54  according to the embodiment of the present invention.  FIG. 10  is a diagram of the storage unit  54  with a storing component  84  according to the embodiment of the present invention.  FIG. 11  is a diagram of the storage unit  54  without the storing component  84  according to the embodiment of the present invention. In the embodiment, each storage unit combining module  34  can load three storage units  54 , such as the first storage unit  54 A, the second storage unit  54 B and the third storage unit  54 C. The storage unit combining module  34  includes a base  56 , a circuit backboard  58  and the signal adapter  72 . The base  56  includes a first positioning zone  60 , a second positioning zone  62 , a third positioning zone  64  and an open zone  66 , and defines a first inserting direction X and a second inserting direction Y crossed each other. The first inserting direction X is preferably perpendicular to the second inserting direction Y As shown in  FIG. 9 , stretching directions of the first positioning zone  60  and the second positioning zone  62  are parallel to the first inserting direction X, and the first positioning zone  60  is neighbored with the second positioning zone  62  in the second inserting direction Y, so that the first positioning zone  60  and the second positioning zone  62  are respectively located on an upper position and a lower position. A stretching direction of the third positioning zone  64  is parallel to the second inserting direction Y and neighbored with the first positioning zone  60  and the second positioning zone  62  in the first inserting direction X, so the third positioning zone  64  is located on rear of the first positioning zone  60  and the second positioning zone  62 , and the stretching direction of the third positioning zone  64  is perpendicular to the stretching directions of the first positioning zone  60  and the second positioning zone  62 . The open zone  66  is neighbored with the third positioning zone  64 . 
     The first positioning zone  60 , the second positioning zone  62  and the third positioning zone  64  respectively are dotted patterns marked by arrows shown in  FIG. 9 . A long side of the positioning zone represents the lateral side, and a short side of the positioning zone represents the edge side. It is to say, the rear edge side indicates a lower reach (such like a connecting position) of each positioning zone according to the inserting direction, and the front edge side indicates an upper reach (such like an entering position) of each positioning zone according to the inserting direction. 
     The circuit backboard  58  is disposed on the base  56 . The circuit backboard  58  is mainly composed on a first section  68  and a second section  70  bent from each other. Two sides of the first section  68  respectively face the right lateral side  641  of the third positioning zone  64  and the rear edge sides  602 ,  622  of the first positioning zone  60  and the second positioning zone  62 . A side of the second section  70  faces the rear edge side  624  (which is different from the right lateral side  641 ) of the third positioning zone  64 . A distal end of the second section  70  is located within the open zone  66 . The signal adapter  72  is disposed on the open zone  66  and electrically connected to the second section  70  for connecting with the corresponding socket  46  of the RAID card  32 . In another embodiment of the present invention, the RAID card  32  can be parallel to the bottom slab  38  and the signal adapter  72  moves downward to insert into the corresponding socket  46  of the RAID card  32 . Generally, dimensions of the first positioning zone  60 , the second positioning zone  62  and the third positioning zone  64  are identical, a length of the first section  68  may be shorter than a length of the second section  70 , so that the circuit backboard  58  can be a L-shaped slab component, the first section  68  is a long section of the L-shaped slab component (the circuit backboard  58 ), and the second section  70  is a short section of the L-shaped slab component (the circuit backboard  58 ). 
     The circuit backboard  58  further includes a first connector  74 , a second connector  76  and a third connector  78 . The first connector  74  is disposed on a position of the first section  68  facing the first positioning zone  60 . The second connector  76  is disposed on a position of the first section  68  facing the second positioning zone  62 . The third connector  78  is disposed on a position of the second section  70  facing the third positioning zone  64 . The first connector  74 , the second connector  76  and the third connector  78  respectively are mid-mount connectors. The base  56  further can include a plurality of constraining components  80  respectively disposed on two opposite lateral sides of the first positioning zone  60 , the second positioning zone  62  and the third positioning zone  64 . The constraining components  80  of the position zones  60 ,  62 ,  64  are utilized to constrain a movement of the related storage units  54 , which means the first storage unit  54 A, the second storage unit  54 B and the third storage unit  54 C can be slidably assembled with or disassembled from the base  56  through the first positioning zone  60 , the second positioning zone  62  and the third positioning zone  64  in the first inserting direction X and the second inserting direction Y, respectively. 
     As shown in  FIG. 8  and  FIG. 9 , the first storage unit  54 A and the second storage unit  54 B are assembled with the first positioning zone  60  and the second positioning zone  62  in the first inserting direction X, and respectively connected to the first connector  74  and the second connector  76 . The third storage unit  54 C is assembled with the third positioning zone  64  in the second inserting direction Y different from the first inserting direction X, and connected to the third connector  78  accordingly. Thus, the first inserting direction X is substantially perpendicular to the second inserting direction Y the stretching direction of the first section  68  can be substantially parallel to the second inserting direction Y, and the stretching direction of the second section  70  can be substantially parallel to the first inserting direction X. 
     As shown in  FIG. 10  and  FIG. 11 , the storage unit  54  may include a supporting component  82 , a storing component  84  and a detaching component  86 . The storing component  84  can be a 2.5-inch hard disk, but not limited to, fixed on the supporting component  82 . The detaching component  86  is disposed on an end of the supporting component  82 . While the storage unit  54  slides into the base  56  via the constraining component  80 , the detaching component  86  can be engaged with the base  56  to constrain a relative movement between the supporting component  82  and the constraining component  80 , so as to prevent the storage unit  54  from being disassembled from the base  56 . For repair and/or replacement of the storage unit  54 , the detaching component  86  can be activated to unlock connection modes of the rear connectors  74 ,  76 ,  78 , so as to disassemble the storage unit  54  from the positioning zone of the base  56 . For instance, the first storage unit  54 A and the second storage unit  54 B can be pulled out of the carrying frame  30  through the front opening  301 , and the third storage unit  54 C can be pulled out of the carrying frame  30  through the top opening  302  for conveniently replacing the storing component  84 , as shown in  FIG. 4  to  FIG. 7 . 
     In conclusion, the housing  12  of the server apparatus  10  preferably can be universal standard, so that two storage unit moving suits  20  are loaded inside the bridging frame  18 , and eight storage unit combining modules  34  are disposed inside each storage unit moving suit  20 . The storage unit moving suit  20  is electrically connected to the mainboard  14  by the flexible cable  88 , and the storage unit moving suit  20  can be pulled out of the bridging frame  18  via the slide rail structure  28  while the server apparatus  10  is in normal operation. The storage unit combining modules  34  are vertically disposed inside the storage unit moving suit  20  side by side. A gap is formed between the adjacent storage unit combining modules  34  for passing through the cooling airflow. The heat dissipating holes  44  on the carrying frame  30  respectively align with the storage units  54  of the storage unit combining modules  34  for preferred heat dissipation efficiency, and the storage unit combining module  34  of the present invention does not form vent holes on the circuit backboard  58  in the present invention. 
     For matching with the L-shaped circuit backboard  58  without the vent holes, the base  56  of the storage unit combining module  34  are divided into the first positioning zone  60 , the second positioning zone  62  and the third positioning zone  64 , and the L-shaped circuit backboard  58  is located between the first positioning zone  60 , the second positioning zone  62  and the third positioning zone  64 . The first storage unit  54 A and the second storage unit  54 B can be transversely inserted into the first positioning zone  60  and the second positioning zone  62  in the first inserting direction X, the third storage unit  54 C can be vertically inserted into the third positioning zone  64  in the second inserting direction Y, and first storage unit  54 A, the second storage unit  54 B and the third storage unit  54 C are respectively connected with the first connector  74 , the second connector  76  and the third connector  78  of the L-shaped circuit backboard  58  to establish connection of the mainboard  14  via the RAID card  32 ; therefore, the storage unit combining module  34  can dispose the third storage unit  54 C on redundant space between the bridging frame  18  and the heat dissipating module  16 . Because each of the bridging frames  18  can load two storage unit moving suits  20 , each of the storage unit moving suits  20  can load eight storage unit combining modules  34 , and each of the storage unit combining modules  34  can load three storage units  54 , so that the storage unit moving suit  20  has twenty-four storage units  54  at most and the server apparatus  10  can simultaneously have forty-eight storage units  54 . The present invention increases loading amounts of the storage unit  54  without changing volume and specification of the server apparatus  10 . The present invention is not limited to the above-mentioned embodiment that the bridging frames  18  has two storage unit moving suits  20  and the storage unit moving suit  20  has eight storage unit combining modules  34 , and further can be applied to the server apparatus with one or more than two storage unit moving suits, or applied to the server apparatus that includes the single storage unit moving suit having the storage unit combining module with other numeral. 
     Comparing to the prior art, the storage unit combining module and the related storage unit moving suit of the present invention can increase the loading amounts of the storage unit while volume of the server apparatus is unvaried. The circuit backboard of the storage unit combining module does not have the vent holes to increase circuit allocation space on the circuit backboard. The hard disk connector, the power connector and the signal connector are not disposed on two surfaces of the circuit backboard, and the single-sided product process can be applied to effectively economize manufacture cost of the circuit backboard. The storage unit moving suit is connected to the mainboard by the flexible cable, so the storage unit moving suit can be pulled out and pushed into the housing for replacement of the storage units while the server apparatus is in normal operation. Each storage unit combining module is matched with three storage units, and a quantity of the hard disks within the server apparatus can be highly changeable for customized demand. 
     Those skilled in the art will readily observe that numerous modifications and alterations of the device and method may be made while retaining the teachings of the invention. Accordingly, the above disclosure should be construed as limited only by the metes and bounds of the appended claims.