JP2002094269A - Server unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent overturning of a server rack by a simple structure at a low cost. SOLUTION: A plurality of the server racks 3 for housing many servers in multiple stages are aligned in a state in which a maintenance passage 11 is assured, bottoms of the server racks are coupled integrally to each other via bottom coupling members 13. Heads of the server racks are coupled to each other via a head coupling members 12 used also as wiring passages. Illuminators 14 are installed at the head coupling members, and an upper surface of the bottom coupling member is formed as a floor of the maintenance passage continued to the circumferential bottom. A vibration isolation unit 15 having casters 16 or slide bearers and recoiling springs 17 is provided at the bottom of the bottom coupling member. An expansion joint 18 is installed at the circumference of a server unit 10.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optimal server unit installed in an information-related facility such as an Internet data center.

[0002]

2. Description of the Related Art In such a facility, a server rack for accommodating a large number of servers in multiple stages is installed. FIG. 3 shows an example of the most common installation of server racks. A gantry 2 is fixed to a floor surface 1 and a server rack 3 is fixed on the gantry 2 so that a plurality of server racks 3 can stand independently. It is designed to be installed in a state. In addition, a free access floor 4 is provided on the floor surface 1, and cables wired to each server rack 3 are usually passed through the free access floor 4.

Further, if the server racks 3 are simply installed in an independent state as described above, there is a concern that the server racks 3 may fall down during an earthquake. To prevent this, for example, as shown in FIG. Seismic isolation device 5 between base 2
When a higher degree of seismic isolation performance is required, a seismic isolation floor 6 as shown in FIG. 5 is used to fix the server racks 3 thereon, In some cases, the heads are connected by a connecting member 7 to prevent the head from falling.

[0004]

However, if each server rack 3 is seismically isolated and supported by the seismic isolation device 5 as shown in FIG. 4, it is not always possible to prevent the server rack 3 from falling down sufficiently, and as shown in FIG. Since the seismic isolation floor 6 is complex and large-scale, it requires not only enormous costs but also a large floor height, so that the server rack 3 can be prevented from overturning with a simpler and less expensive structure. Effective measures that could be taken were needed.

[0005]

SUMMARY OF THE INVENTION In view of the above circumstances, a server unit according to the first aspect of the present invention has a plurality of server racks accommodating a large number of servers in multiple stages, with a maintenance passage secured therebetween. The server racks are characterized in that the bottoms of the server racks are connected to each other by a bottom connecting member to be integrated.

According to a second aspect of the present invention, there is provided the server unit according to the first aspect of the present invention, wherein heads of the server rack are connected to each other by a head connecting member to be integrated.

According to a third aspect of the present invention, in the server unit according to the second aspect of the present invention, the head connecting member forms a wiring path for passing a trunk cable between the server racks. An illumination device is installed on the head connecting member at a position of a ceiling of the maintenance passage.

[0008] The invention of claim 4 is the invention of claim 1, 2, or 3.
In the server unit of the invention, the bottom connecting member forms a wiring path for passing a trunk cable routed between the server racks, and an upper surface of the bottom connecting member is stepped with a peripheral floor surface. And the floor surface of the maintenance passage is formed continuously.

A fifth aspect of the present invention is the server unit according to the first, second, third or fourth aspect of the present invention, wherein a bottom surface of the bottom connecting member is interposed between a floor surface on which the server unit is installed. Further, a seismic isolation device for supporting the server unit in seismic isolation is provided.

According to a sixth aspect of the present invention, there is provided the server unit according to the fifth aspect of the present invention, wherein the seismic isolation device includes at least one of a caster rolling on the floor or a sliding bearing sliding on the floor. And a restoring spring for connecting the bottom connecting member and the floor surface.

According to a seventh aspect of the present invention, there is provided the server unit according to the fifth or sixth aspect, wherein an expansion joint for absorbing a horizontal displacement during an earthquake is provided between the server unit and a surrounding floor. It is characterized by having.

[0012]

1 and 2 show a schematic configuration of a server unit 10 according to an embodiment of the present invention. In the server unit 10 of the present embodiment, a plurality of (four in the illustrated example) server racks 3 are juxtaposed with a maintenance passage 11 secured therebetween, and the heads of the server racks 3 and The bottom portions are connected to each other by a head connecting member 12 and a bottom connecting member 13, respectively, so as to be strongly integrated.

As shown in FIG. 2, the head connecting member 12 is composed of a plurality of (three in the illustrated example) wiring ducts, and these are wirings for passing a trunk cable between the server racks 3. The lighting device 1 is formed at the position of the ceiling of the maintenance passage 11 with these head connecting members 12.
4 are installed. A plate that covers the upper part of the maintenance passage 11 may be attached to the upper or lower part of the head connecting member 12 and may be used as the ceiling surface of the maintenance passage 11.

The bottom connecting member 13 is a rectangular box provided between the bottoms of the server racks 3 and connecting the server racks 3 to each other. The internal space is wired between the server racks 3. The upper surface is formed at the same level as the surrounding free access floor 4, and the floor surface of the maintenance passage 11 is formed as it is without any step. In addition, maintenance of each server housed in each server rack 3 can be performed from the maintenance passage 11 without any trouble. In addition, it is also possible to install a blower or an air conditioner for passing cooling air into the server rack 3 if necessary inside the bottom connecting member 13. The internal space 13 and the double floor space by the free access floor 4 may be in communication with each other.

On the bottom surface of the bottom connecting member 13, there is provided a simple seismic isolation device 15 interposed between the server unit 10 and the floor surface 1 on which the server unit 10 is installed, for supporting the server unit 10 in seismic isolation. Have been. The seismic isolation device 15
A low-friction caster 16 that rolls on the floor 1 in each direction.
Spring 1 for connecting the bottom connecting member 13 and the floor 1
The caster 16 rolls in the event of an earthquake to allow horizontal displacement of the entire server unit 10, and after the end of the earthquake, is restored to its initial position by the restoring force of the restoring spring 17. In addition, between the server unit 10 and the surrounding free access floor 4, an expansion joint 18 in two horizontal directions for absorbing relative horizontal displacement at the time of an earthquake is provided.

In the server unit 10 having the above structure, the plurality of server racks 3 are firmly integrated by the head connecting member 12 and the bottom connecting member 13, so that the individual server racks 3 can be installed independently and independently. Needless to say, the server unit 10 is far less likely to fall as compared with the above, and since the whole server unit 10 is seismically isolated and supported by the seismic isolation device 15, it is possible to reliably prevent the server unit 10 from falling during an earthquake. However, since the expansion joint 18 is provided around the server unit 10, horizontal displacement during an earthquake is allowed without any trouble, and damage to the free access floor 4 and the server rack 3 can be reliably prevented.

Further, since the head connecting member 12 and the bottom connecting member 13 also serve as wiring paths for trunk cables, rational and economical wiring is possible.

A maintenance passage 1 is provided between each server rack 3.
In addition to the fact that maintenance work 1 is assured, maintenance work can be performed in the same manner as before, and the maintenance passage 11 is continuous with the free access floor 4 without any step. Therefore, no inconvenience occurs in the maintenance work for the server rack 3.

Further, since the seismic isolation device 15 has a simple structure using the low-friction type casters 16 and the restoring springs 17, it is far more in comparison with the case using the seismic isolation floor 6 as shown in FIG. It is cheap and there is no need to increase the floor height.

Note that, depending on the form of the server rack 3, the head connecting member 12 in the above embodiment can be omitted. That is, for example, when the height of each server rack 3 is not so high, or when the center of gravity is sufficiently low, it is sufficient to connect the bottoms of the server racks 3 only by the bottom connecting member 13 so that the server racks 3 fall sufficiently. Since the prevention effect may be obtained, the head connecting member 13 may be omitted in such a case.

Further, the seismic isolation device in the server unit of the present invention is not limited to the one using the casters 16 in the above embodiment, and an appropriate sliding bearing that slides on the floor 1 may be used instead of the casters 16. It is possible,
Of course, the casters 16 and the sliding bearings may be used in combination.

[0022]

According to the server unit of the first aspect of the present invention, a plurality of server racks are juxtaposed and their bottoms are connected and integrated by a bottom connecting member. It is much harder to fall down than when it is installed in a self-standing state, and there is no inconvenience in maintenance work because a maintenance passage is secured between the server racks.

In the server unit according to the second aspect of the present invention, in addition to the above, the heads of the server racks are connected to each other by a head connecting member to be integrated, so that a further fall prevention effect can be obtained.

According to the third aspect of the present invention, since the head connecting member forms a wiring path for passing the trunk cable, a reasonable and economical wiring is possible using the head connecting member. In addition, since a lighting device is installed on the head connecting member, it is convenient for maintenance work.

According to the fourth aspect of the present invention, since the bottom connecting member forms a wiring path for passing the trunk cables, rational and economic wiring can be performed using the bottom connecting member. The upper surface of the bottom connecting member continuously forms the floor of the maintenance passage without any step with the surrounding floor, so that the maintenance work can be easily performed.

According to the fifth aspect of the present invention, since the seismic isolation device for supporting the entire server unit in seismic isolation is provided on the bottom surface of the bottom connecting member, it is possible to more reliably prevent a fall during an earthquake.

According to the sixth aspect of the present invention, since a simple structure including a caster or a sliding bearing and a restoring spring is employed as the seismic isolation device, the seismic isolation device is much cheaper than the conventional case using the seismic isolation floor. There is no need to increase the floor height.

According to the seventh aspect of the present invention, since the expansion joint is provided between the server unit and the floor around the server unit, horizontal displacement of the server unit during an earthquake is allowed without any trouble, and the server rack and the floor around the server rack are allowed. The surface can be prevented from being damaged.

[Brief description of the drawings]

FIG. 1 is an elevational view showing an installation example of a server unit according to an embodiment of the present invention.

FIG. 2 is a perspective view of the server unit.

FIG. 3 is a diagram showing an example of installation of a conventional server rack.

FIG. 4 is a diagram showing another example of installation of a conventional server rack.

FIG. 5 is a diagram showing still another installation example of a conventional server rack.

[Explanation of symbols]

 Reference Signs List 3 server rack 4 free access floor 10 server unit 11 maintenance passage 12 head connecting member 13 bottom connecting member 14 lighting device 15 seismic isolation device 16 caster 17 restoration spring 18 expansion joint

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Shoji Nakamura 1-3-2 Shibaura, Minato-ku, Tokyo Shimizu Corporation (72) Inventor Mitsuo Endo 1-2-3 Shibaura, Minato-ku, Tokyo Shimizu Construction Co., Ltd. (72) Inventor Ryoji Satsuma 1-3-2 Shibaura, Minato-ku, Tokyo Shimizu Corporation F-term (reference) 3J048 AA03 AB01 AC01 BC02 BG02 BG04 DA05 EA13 EA38

Claims (7)

[Claims] A plurality of server racks accommodating a large number of servers in multiple stages are juxtaposed with a maintenance passage secured therebetween, and the bottom portions of the server racks are connected by a bottom connecting member to be integrated. A server unit characterized in that: 2. The server unit according to claim 1, wherein the heads of the server rack are connected together by a head connecting member to be integrated. 3. The server unit according to claim 2, wherein the head connecting member forms a wiring path for passing a trunk cable routed between the server racks.
A server unit, wherein a lighting device is installed on the head connecting member at a position of a ceiling of the maintenance passage. 4. The server unit according to claim 1, wherein said bottom connecting member forms a wiring path for passing trunk cables laid between server racks. A server unit, wherein an upper surface of the bottom connecting member continuously forms a floor surface of the maintenance passage with a peripheral floor surface without any step. 5. The server unit according to claim 1, 2, 3, or 4, wherein the server unit is provided on a bottom surface of the bottom connecting member with a floor surface on which the server unit is installed. A server unit comprising a seismic isolation device for supporting seismic isolation. 6. The server unit according to claim 5, wherein the seismic isolation device includes at least one of a caster that rolls on the floor or a slide bearing that slides on the floor, and the bottom part. A server unit comprising: a connecting member; and a restoring spring for connecting a floor surface. 7. The server unit according to claim 5, wherein an expansion joint for absorbing a horizontal displacement during an earthquake is provided between the server unit and a floor around the server unit. Server unit to do.