JP5620023B1 - Data center floor structure and data center - Google Patents

Abstract

A data center floor structure having high security is provided. The free access floor is provided with a wiring space in which wiring connected to a server is arranged. In addition, an air-conditioned wind tunnel zone having a height of less than 1500 mm is formed between the floor slab and the free access floor. The free access floor has a lower surface and an upper surface that is disposed above the lower surface and forms the wiring space between the lower surface and an air conditioning wind tunnel on the lower surface and the upper surface of the free access floor, respectively. An opening for supplying cold air from the air conditioner toward the CPU room from the zone is formed. Moreover, the opening part of the lower surface of a free access floor is comprised so that the maintenance work of the wiring arrange | positioned in wiring space cannot be performed from an air-conditioning wind tunnel zone. [Selection] Figure 1

Description

  The present invention relates to a data center construction technique, and more particularly to a floor structure of a large-scale data center that accommodates a large number of servers and a technique that is effective when applied to a data center.

  In a data center, a large number of devices such as servers and routers (hereinafter sometimes simply referred to as “servers”) are stored using a server rack or the like. The floor structure of the CPU room where server racks are installed is generally a double floor made up of so-called free access floors on floors such as floor slabs at each level, and a plurality of server racks are arranged on it. It has a structure. In this case, wiring such as cables for supplying power and communication to the server rack and the stored server is mainly arranged in a wiring space formed under the floor panel of the free access floor.

  Each of the servers stored in the server rack generates heat. As a method for cooling the server, a method of supplying cold air from a cooling device to a CPU room via a wiring space under a floor panel is known. The cold air exchanges heat with the server to become hot air, and the hot air flows back to the air conditioner through the space behind the ceiling.

  By the way, in recent years, with the increase in the density of server storage, the wiring route in the wiring space formed on the free access floor tends to become complicated. For this reason, it is difficult to properly secure the wiring path and the cold air path. In consideration of such points, in Patent Document 1, instead of arranging the free access floor on the floor slab, it is arranged on a steel frame arranged in a grid at a predetermined height from the floor slab, It has been proposed to form an underfloor area having a height of 1500 mm or more between the floor slab and the free access floor. In Patent Document 1, it is intended to prevent the cold air passage from being obstructed by the wiring by arranging the wiring in the underfloor area having such a height and passing the cold air. In Patent Document 1, it is also intended that a computer system administrator who manages wiring can easily perform maintenance work in the underfloor area by setting the height of the underfloor area to 1500 mm or more. ing.

JP 2011-69542 A

  In recent servers, there is a possibility that a large amount of wiring is used for both power supply and communication, so it is necessary to secure a space for wiring with a certain margin. In recent servers, the amount of heat generated may increase dramatically as the CPU is highly integrated, so it is necessary to secure an air path for air conditioning with a certain margin. Therefore, as proposed in Patent Document 1, when cold air is passed through the underfloor area where the wiring is arranged, both the allowance for the wiring and the allowance for the airway are set as the height of the underfloor area. The height in consideration will be set. For this reason, the height of the underfloor area is significantly larger than before, and as a result, the member for supporting the underfloor area in the vertical direction (hereinafter also referred to as a spacer) has very high strength and large dimensions. Will be required. As a result, the cost for configuring the floor structure may increase, or the effective space in the underfloor area may decrease due to the increased size of the spacer.

  When cold air is passed through the underfloor area where the wiring is arranged, the work area of the computer system manager who manages the wiring and the work area of the air conditioning manager who manages the air conditioner are the same area. For this reason, it can be said that the structure has a problem from the viewpoint of security.

  An object of this invention is to provide the floor structure of the data center which can solve such a subject effectively.

  The present invention provides a floor structure of a data center that houses a large number of servers, comprising a floor slab and a free access floor disposed at a predetermined height from the floor slab, and the free access floor A CPU room in which a plurality of server racks for storing the servers are arranged is formed above, and a wiring space in which wiring to be connected to the servers is arranged is formed in the free access floor, and the floor slab An air-conditioning wind tunnel zone having a height of less than 1500 mm is formed between the free access floor and the free access floor, and the free access floor is disposed above the lower surface and between the lower surface and the wiring An upper surface that forms a space, and each of the lower surface and the upper surface of the free access floor has a front side from the air-conditioning wind tunnel zone. An opening for allowing cold air from an air conditioner to pass through to the CPU room is formed, and the opening on the lower surface of the free access floor is used to perform maintenance work for the wiring arranged in the wiring space. The data center is configured so that it cannot be performed from a zone, and the wiring space of the free access floor is configured so that maintenance work of wiring arranged in the wiring space can be performed from the CPU room. The floor structure.

  In this invention, the said wiring in the said wiring space may be arrange | positioned so that it may not overlap with the said opening part of the said lower surface of the said free access floor in an up-down direction.

  In the present invention, the opening on the lower surface of the free access floor may be configured such that a hand cannot be inserted into the wiring space from the air-conditioned wind tunnel zone. For example, the lower surface of the free access floor may be constituted by a mesh boundary mesh installed on the support member. In this case, the gap between the boundary meshes may function as the opening for allowing the cold air to pass therethrough.

  In the present invention, preferably, the height of the wiring space is in the range of 400 to 700 mm.

  In the present invention, an auxiliary air conditioner may be provided in the CPU room. In this case, a refrigerant pipe and a drain pipe connected to the auxiliary air conditioner may be provided in the air conditioning wind tunnel zone. In this case, the lower surface and the upper surface of the free access floor are configured to allow the refrigerant pipe and the drain pipe to pass therethrough, respectively.

  The present invention is a data center that accommodates a large number of servers, wherein the computer room has the data center floor structure described above.

  According to the present invention, the wiring space in which at least a part of the wiring connected to the server is arranged is formed in the free access floor, and the air-conditioned wind tunnel zone through which the cold air passes is formed between the floor slab and the free access floor. Is done. For this reason, the height of the wiring space and the height of the air conditioning wind tunnel zone can be optimized independently. Moreover, compared with the case where the space in which the wiring is arranged and the space through which the cool air passes are the same, the demand for the strength of the member functioning as the spacer extending in the vertical direction can be reduced. This makes it easier to design the entire data center floor structure. Further, since the work area of the computer system manager who manages the wiring and the work area of the air conditioning manager who manages the air conditioner are separated, the security can be improved.

FIG. 1 is a diagram showing a floor structure of a data center according to an embodiment of the present invention. FIG. 1 is a diagram showing a modification of the floor structure of the data center.

Floor structure of the data center below with reference to FIG. 1, will be described embodiments of the present invention. FIG. 1 is a diagram showing an outline of a data center floor structure 10 according to the present embodiment.

  As shown in FIG. 1, the floor structure 10 is disposed at a predetermined height from the floor slab 22, a free access floor 30 disposed at a predetermined height from the floor slab 22, and the free access floor 30. The ceiling board 23 and the ceiling slab 21 arrange | positioned in the position of predetermined height from the ceiling board 23 are provided.

(CPU room)
Above the free access floor 30, specifically, between the free access floor 30 and the ceiling plate 23, a CPU room 12 in which a plurality of server racks 51 for storing servers 52 are arranged is formed. The arrangement method of the server rack 51 in the CPU room 12 is not particularly limited, and is appropriately determined in consideration of a method of radiating heat generated in the server 52, ease of maintenance work of the server 52, and the like. For example, the server racks 51 may be arranged in a line so as to form a maintenance passage therebetween. In order to prevent the drawing from becoming complicated, the server 52 is depicted only in one server rack 51 for convenience in FIG. 1, but is not limited thereto.

(Air-conditioning wind tunnel zone)
In addition, an air-conditioning wind tunnel zone 14 through which the cool air F supplied to the CPU room 12 for cooling the server 52 in the CPU room 12 passes is formed between the floor slab 22 and the free access floor 30. The free access floor 30 is configured such that cold air F from the air-conditioned wind tunnel zone 14 toward the CPU room 12 can pass through.

  For example, as shown in FIG. 1, the cold air F is supplied from an air conditioner 55 disposed in the air conditioning wind tunnel zone 14. The cold air F from the air conditioner 55 exchanges heat with the server 52 in the CPU room 12 and becomes hot air. For example, the hot air flows back to the air conditioner 55 through the ceiling space 11 between the ceiling slab 21 and the ceiling plate 23. The air conditioner 55 includes an air conditioning coil 56 that cools the recirculated hot air, and an air conditioning fan 57 that sends out the cooled air as the cold air F. The air conditioning fan 57 may be installed not in the air conditioning wind tunnel zone 14 but in the air conditioning machine room 58.

(Free access floor and wiring space)
As shown in FIG. 1, the free access floor 30 is supported from below by a support member 32, and is disposed below the lower surface 31 partially facing the air-conditioning wind tunnel zone 14 and the lower surface 31. 12 and an upper surface 36 facing 12. Between the lower surface 31 and the upper surface 36, a wiring space 13 in which the wiring 53 connected to the server 52 is disposed is formed. In addition, openings 34 and 37 for allowing the cool air F from the air conditioner 55 to pass from the air conditioning wind tunnel zone 14 to the CPU room 12 are formed on the lower surface 31 and the upper surface 36 of the free access floor 30, respectively. Yes. In addition to the free access floor 30, a space in which wiring connected to the server 52 is arranged may be formed. For example, it is conceivable to further form a space where wiring is arranged in the ceiling space 11.

  As long as the temperature of the server 52 can be appropriately adjusted, the position of the opening 37 formed in the upper surface 36 of the free access floor 30 is not particularly limited. For example, as indicated by reference numeral F <b> 1 in FIG. 1, the opening 37 may be formed so that the cool air passing through the upper surface 36 of the free access floor 30 reaches the space in the server rack 51 directly. Alternatively, the opening 37 may be formed so that the cold air passing through the upper surface 36 of the free access floor 30 reaches the space in the server rack 51 after passing through the maintenance passage. Note that the specific structure of the opening 37 is not particularly limited as long as an appropriate amount of cold air F can pass through. For example, the opening 37 may be configured by a through hole formed in a floor panel described later.

  In the present embodiment, the wiring space 13 of the free access floor 30 is configured so that a computer system administrator can perform maintenance work for the wiring 53 arranged in the wiring space 13 from the CPU room 12. For example, the upper surface 36 of the free access floor 30 is constituted by a number of removable floor panels. The wiring 53 is disposed at a height position that can be accessed from the CPU room 12 by the computer system administrator. Therefore, the computer system administrator can perform management and maintenance work of the wiring 53 arranged therebelow by removing the floor panel at a predetermined position.

  As long as the wiring space 13 can be formed between the upper surface 36 and the opening 34 through which the cold air F flows can be formed, the specific configuration of the lower surface 31 is not limited to a specific one. For example, the lower surface 31 may be configured as a mesh boundary mesh 31 having an opening 34. The boundary mesh 31 includes a support member 32 made of, for example, a steel frame extending in the left-right direction in FIG. A plurality of support members 32 are arranged at predetermined intervals in the depth direction, the vertical direction, or the lattice shape in FIG. A plurality of spacers 39 are provided on the support member 32 to support the upper surface 36 from below. The mesh 31 having the opening 34 may be made of metal or other material as long as air circulation and cable instruction strength are ensured.

  By the way, the maintenance work of the air conditioner 55 is generally performed by an air conditioning manager who is familiar with the air conditioner. On the other hand, when the space where the wiring 53 is arranged and the space through which the cold air F passes are the same as in Patent Document 1 described above, or when the wiring 53 in the wiring space 13 is accessible from the air-conditioning wind tunnel zone 14. Therefore, the air conditioning manager can have some influence on the wiring 53. For example, an air conditioning administrator who is unfamiliar with the maintenance work of the server 52 may cause damage, and an unexpected situation may occur in the wiring 53.

  In consideration of such points, in the present embodiment, the maintenance work of the wiring 53 arranged in the wiring space 13 of the boundary mesh 31 constituting the lower surface of the free access floor 30 can be performed from the air conditioning wind tunnel zone 14. Propose to make it impossible. That is, it is proposed that the work area of the computer system manager who manages the wiring 53 and the work area of the air conditioning manager who manages the air conditioner 55 be separated in a security manner. As a result, it is possible to prevent an unexpected situation from occurring in the server 52 and the wiring 53, thereby improving the security of the data center.

  As a method for further improving the security, for example, it is conceivable to arrange the wiring 53 in the wiring space 13 so as not to overlap with the opening 34 of the boundary mesh 31 of the free access floor 30 in the vertical direction. In other words, it can be considered that the opening 34 of the boundary mesh 31 is formed at a position that does not overlap the wiring 53 in the vertical direction. Thereby, it is possible to prevent the wiring 53 from being visually recognized from the air-conditioning wind tunnel zone 14, and thus it is possible to more strongly prevent the wiring 53 from being accessed from the air-conditioning wind tunnel zone 14.

    In addition, it is conceivable that the opening 34 of the boundary mesh 31 of the free access floor 30 has a structure in which a hand cannot be inserted into the wiring space 13 from the air conditioning wind tunnel zone 14. For example, as shown in FIG. 1, it is conceivable to form a boundary mesh 31 having openings 34 by arranging iron rod-shaped members 33 and the like on a support member 32 in a lattice pattern. In this case, the opening formed between the lattice members functions as the opening 34 for allowing the cold air F to pass therethrough. Further, by appropriately setting the interval between the lattice-like members 33, that is, the size of the opening 34 of the boundary mesh 31, access to the wiring 53 from the air-conditioned wind tunnel zone 14 can be prevented. The dimension of the opening 34 of the boundary mesh 31 is set within a range of 20 to 60 mm, for example.

(Height of each space)
Next, an example of the height of each space 11, 12, 13, and 14 in the present embodiment will be described. In FIG. 1, the heights of the ceiling space 11, the CPU room 12, the wiring space 13, and the air-conditioning wind tunnel zone 14 are represented by symbols H1, H2, H3, and H4, respectively. Further, the thickness of the support member 32 of the boundary mesh 31 of the free access floor 30 is represented by the symbol H5. In addition, the height of the floor partitioned between the ceiling slab 21 and the floor slab 22 is represented by the symbol H6.

  In the present embodiment, as described above, the air-conditioning wind tunnel zone 14 is a space in which the cold air F for cooling the server 52 passes but the wiring 53 connected to the server 52 is not disposed. Therefore, the height H4 of the air-conditioning wind tunnel zone 14 is set mainly based on the viewpoint of passing the cold air F having a sufficient air volume for cooling the server 52. That is, when setting the height H4 of the air-conditioning wind tunnel zone 14, it is not necessary to consider the viewpoint of securing a route for the wiring 53. Therefore, the height H4 of the air-conditioning wind tunnel zone 14 can be set lower than the height of the underfloor area in Patent Document 1 described above. For example, the height H4 of the air-conditioning wind tunnel zone 14 is less than 1500 mm.

  In the present embodiment, the wiring space 13 is not a space through which the cold air F mainly passes as described above. Accordingly, the height H3 of the wiring space 13 is set mainly based on the viewpoint of securing a route for the wiring 53 connected to the server 52. That is, the height H3 of the wiring space 13 can be set independently of the height H4 of the air conditioning wind tunnel zone 14 described above. The height H3 of the wiring space 13 is preferably set in the range of 300 to 700 mm, more preferably in the range of 400 to 700 mm, considering the ease of maintenance work from the CPU chamber 12.

  Taking an example of the heights H1 to H6 determined in consideration of the above-described viewpoints regarding the heights H3 and H4, the heights H1 to H6 are 1500 mm, 2800 mm, 400 mm, 150 mm, 1400 mm, and 6250 mm, respectively.

  As described above, according to the present embodiment, the wiring space 13 in which the wiring 53 connected to the server 52 is disposed is formed in the free access floor 30, and the air-conditioning wind tunnel zone 14 through which the cold air F passes is the floor slab 22. And the free access floor 30. For this reason, the height of the wiring space 13 and the height of the air-conditioning wind tunnel zone 14 can be optimized independently. Further, as compared with the case where the space in which the wiring 53 is arranged and the space through which the cold air F passes are the same, the demand for the strength of the member functioning as the spacer 39 extending in the vertical direction can be reduced. For this reason, the design of the entire floor structure 10 of the data center becomes easier. In addition, since the work area of the computer system manager who manages the wiring 53 and the work area of the air conditioning manager who manages the air conditioner 55 are separated, the security can be improved.

  Note that various modifications can be made to the above-described embodiment. Hereinafter, modified examples will be described with reference to the drawings as necessary. In the following description and the drawings used in the following description, the same reference numerals as those used for the corresponding parts in the above embodiment are used for the parts that can be configured in the same manner as in the above embodiment. A duplicate description is omitted. In addition, when it is clear that the operational effects obtained in the above-described embodiment can be obtained in the modified example, the description thereof may be omitted.

(Example where an auxiliary air conditioner is provided)
In the above-described embodiment, the example in which the air conditioner 55 for supplying the cold air F to the CPU room 12 is arranged in the air-conditioning wind tunnel zone 14 is shown. However, when the cooling capacity is insufficient only with the cold air F from the air conditioner 55, a further cooling device may be provided in the CPU room 12. For example, as shown in FIG. 2, an auxiliary air conditioner 60 for supplying cold air toward the server 52 is arranged inside the server rack 51, and the refrigerant connected to the auxiliary air conditioner 60 is provided in the air conditioning wind tunnel zone 14. A pipe 61 and a drain pipe 62 may be provided. In this case, the boundary mesh 31 and the upper surface 36 of the free access floor 30 are configured to allow the refrigerant pipe 61 and the drain pipe 62 to pass therethrough, respectively. Alternatively, the boundary mesh 31 and the upper surface 36 of the free access floor 30 have a structure in which openings through which the refrigerant pipe 61 and the drain pipe 62 can pass can be provided as necessary.

DESCRIPTION OF SYMBOLS 10 Floor structure 11 Ceiling back space 12 CPU room 13 Wiring space 14 Air-conditioning wind tunnel zone 21 Ceiling slab 22 Floor slab 23 Ceiling board 30 Free access floor 31 Lower surface 32 Support member 33 Mesh stripe 34 Opening 36 Upper surface 37 Opening 39 Spacer 51 Server Rack 52 Server 53 Wiring 55 Air conditioner 56 Air conditioner coil 57 Air conditioner fan 60 Auxiliary air conditioner 61 Refrigerant pipe 62 Drain pipe F Cold air

Claims (8)

A data center floor structure that houses a large number of servers,
Floor slabs,
A free access floor disposed at a predetermined height from the floor slab,
Above the free access floor is formed a CPU room in which a plurality of server racks for storing the servers are arranged,
In the free access floor, a wiring space in which wiring connected to the server is arranged is formed,
An air-conditioning wind tunnel zone having a height of less than 1500 mm is formed between the floor slab and the free access floor,
The free access floor has a lower surface and an upper surface disposed above the lower surface and forming the wiring space between the lower surface,
Each of the lower surface and the upper surface of the free access floor is formed with an opening for passing the cool air cooled by the air conditioner from the bottom toward the CPU room from the air conditioning wind tunnel zone,
The opening of the lower surface of the free access floor is configured so that maintenance work of the wiring arranged in the wiring space cannot be performed from the air conditioning wind tunnel zone,
The wiring space of the free access floor is a data center floor structure configured so that maintenance work of the wiring arranged in the wiring space can be performed from the CPU room. The floor structure of the data center according to claim 1, wherein the wiring arranged in the wiring space is a cable for power supply or communication for the server. The floor structure of a data center according to claim 1 or 2 , wherein the wiring in the wiring space is disposed so as not to overlap the opening of the lower surface of the free access floor in the vertical direction. The data center according to any one of claims 1 to 3, wherein the opening on the lower surface of the free access floor is configured so that a hand cannot be inserted into the wiring space from the air-conditioned wind tunnel zone. Floor structure. The lower surface of the free access floor is constituted by a mesh boundary mesh installed on the support member,
The data center floor structure according to claim 4 , wherein a gap between the boundary meshes functions as the opening for allowing the cold air to pass therethrough. The floor structure of the data center according to any one of claims 1 to 5 , wherein a height of the wiring space is in a range of 400 to 700 mm. An auxiliary air conditioner is provided in the CPU room,
In the air conditioning wind tunnel zone, a refrigerant pipe and a drain pipe connected to the auxiliary air conditioner are provided,
The floor structure of the data center according to any one of claims 1 to 6 , wherein the lower surface and the upper surface of the free access floor are configured to allow the refrigerant pipe and the drain pipe to pass therethrough, respectively. A data center that houses a large number of servers,
A data center, wherein the computer center has the floor structure of the data center according to any one of claims 1 to 7 .

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