A system for cooling a data center includes a plurality of cooling racks, with each cooling rack including a housing and cooling system components supported by the housing. The system further includes a fluid communication system coupled to the cooling system components of the plurality of racks. The fluid communication system is configured to provide chilled coolant to and exhaust heated coolant from coolant system components of each cooling rack. The system also includes at least one controller coupled to each cooling rack of the plurality of cooling racks to control the operation of each cooling rack. The plurality of cooling racks and the fluid communication system are configured to be modular to allow placement of cooling racks in different locations in a row of equipment racks within the data center. Methods of cooling a data center are further disclosed.

Cooling system and method

A data center includes an electronic equipment rack having a front face and a back face and a cooling unit positioned adjacent to the rack, the cooling unit having a front face and a back face, the cooling unit being configured to exhaust cooled air from the front face of the cooling unit to cool the rack. The cooling unit is configured to release the cooled air along a substantial portion of a height of the front face of the rack.

Rack height cooling

A cooling solution is provided for a modular data center. The modular data center includes a plurality of racks, each of the racks having a front face and a back face, wherein the plurality of racks is arranged in a first row and a second row, such that the back faces of racks of the first row are facing the second row, and the back faces of the racks of the second row are facing the first row, a first end panel coupled between a first rack of the first row and a first rack of the second row, the first end panel having a bottom edge and a tope edge, a second end panel coupled between a second rack of the first row and a second rack of the second row, the second end panel having a top edge and a bottom edge, and a roof panel coupled between the top edge of the first panel and the top edge of the second panel. Cooling equipment within at least one of the equipment racks draws hot air from between the rows of racks and delivers cooled air out of the front face of one of the racks.

Data center cooling system

A system for restricting mixing of air in a data center includes a plurality of racks, each of the racks having a front face and a back face The system includes an enclosure for collecting air released from the back faces of the plurality of racks, the enclosure configured to substantially contain the air in an area between the first row and the second row and having a roof panel coupled to the first row of racks and the second row of racks configured to span a distance between the first row of racks and the second row of racks The enclosure is configured to maintain a first air pressure inside of the enclosure that is substantially equal to a second air pressure outside the enclosure

Data center cooling

This relates to the manner in which computers are configured in a given area in order to conserve space and to deal with cooling issues associated with the close housing of a large number of computers. Efficient arrangements for efficiently increasing the density of computer configurations are shown, particularly when used in a network server or host environment.

High density computer equipment storage system

A magnetic disk system utilizes both of voice coil motor and a piezoelectric element provided on a head supporting arm to precisely position a head to a predetermined position on a disk. The piezoelectric element is built in the distal end portion of the head supporting arm and is restricted in respect of its movement by a resilient mechanism which has low rigidity in the driving direction of the piezoelectric element and high rigidity in the other directions. The resilient mechanism is formed by pairs of doubled parallel leaf springs so arranged that each pair is disposed on either side of the piezoelectric element.

Disk system with sub-actuators for fine head displacement

An electronic apparatus, such as a disk apparatus, has a plurality of electronic units such as magnetic head-disk units and at least one power source unit for supplying power to the electronic units. The arrangement of the electronic apparatus is such that, on a frame of the apparatus, the plurality of electronic units are vertically arranged in such a manner as to form a first arrangement system, while the at least one power source unit is arranged in such a manner as to form a second arrangement system above the first arrangement system. The apparatus has an air flow passage for causing cooling air to flow from a lower portion of the electronic apparatus to the inside thereof, pass through the first arrangement system, thereby pass through the second arrangement system, and then be discharged to the outside of the apparatus. This arrangement enables cooling air to flow in a simplified manner, which in turn enhances the cooling efficiency, and also enables electrically connecting cables to be arranged in a simple wiring system.

Disk apparatus having an improved cooling structure

A magnetic head disk apparatus has a housing with one thicknesswise end providing the front side and the other thicknesswise end providing the rear side of the apparatus. The apparatus further has a plurality of head disk assemblies each including at least one combination of a magnetic head and a magnetic disk. The head disk assemblies are arranged in a plurality of rows not only in heightwise and breadthwise directions but also in the thicknesswise direction of the housing. With this arrangement, it is possible to accommodate a multiplicity of head disk assemblies with a high space factor in the housing.

Magnetic disk apparatus having improved arrangement of head disk assemblies

A magnetic disk apparatus includes a magnetic disk, a magnetic head which performs information recording and reproducing for the magnetic disk, a load spring for supporting the magnetic head, a head arm for fixing the load spring, a housing for housing these components, a shaft which fixes the head arm, bearings for supporting the shaft rotatably on the housing, and a motor which is coupled to the shaft. The motor comprises a motor cover, a permanent magnet which is divided into a plurality of segments and fixed on the shaft, and a coil which is fixed on the interior surface of the motor cover by being spaced with a certain gap from the permanent magnet. The shaft is included with a counter weight so as to complement the weight of the head arm, load spring and magnetic head. The coil has linear conductor sections parallel to the shaft, with the total number of linear sections being set equal to the total number of segments of permanent magnet.

Magnetic disk apparatus using a rotary actuator for magnetic head positioning with reduced vibration

A spindle assembly for magnetic disks of both-end support type has a hub (26) for fixing the disks, a shaft (21) to which the hub is fixed, a pair of bearings (19, 28) which are spaced in vertical or horizontal direction, a pre-loading spring (27) for pre-loading one of the bearings, and a housing (15, 16) composed of housing parts which accommodates the hub (26), shaft (21), bearings (19, 28) and the pre-loading spring (27). The spindle assembly further has an axial reference surface (36) formed on the hub at a right angle with respect to the shaft (21), and another axial reference surface (35) formed on one of the housing parts (15) at a right angle with respect to the vertical portion of the bearing (28) associated with the one of the housing parts. When the shaft (21) is mounted in the one of the housing parts with the hub and the pre-loading spring (27) fitted therearound, the hub (26) is axially urged by the spring (27) such that the axial reference surface thereon (36) is brought into abutment with the axial reference surface (35) on the one of the housing parts (16). As a result, the axis of the spindle assembly is determined by the abutment between the reference surfaces (35, 36) and by the bearing in the one of the housing parts. The bearing (19) in the other of the housing parts (16) is axially aligned with the thus determined axis of the spindle assembly.

Spindle assembly for magnetic disks

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