# US 2019/0174657 A1 · System and method for heat dissipation of storage device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0174657 A1 - Document ID: US20190174657A1 - Status: Published application - Kind: A1 - Application number: 16/172,055 - Filed: 2018-10-26 - Published: 2019-06-06 - Earliest claimed: 2017-10-27 - Assignees: EMC IP Holding Company LLC - Applicants: EMC IP Holding Company LLC - Inventors: Haifang Zhai; Hendry Wu; David Dong; Yujie Zhou - Web page: https://patentgrep.com/patent/US20190174657A1 ## CPC - H05K 7/20836: {Thermal management, e.g. server temperature control} - F04D 25/166: {using fans} - F04D 27/004: {by varying driving speed} - F04D 29/602: {Mounting in cavities} - F24F 11/0001: {for ventilation (F24F11/30 takes precedence)} - F24F 11/77: by controlling the speed of ventilators - F24F 11/79: for controlling the direction of the supplied air - G05B 15/02: electric - G11B 33/142: {by air cooling} - H05K 7/20736: {within cabinets for removing heat from server blades} - F24F 11/74: for controlling air flow rate or air velocity - F24F 11/76: by means responsive to temperature, e.g. bimetal springs - Y02B 30/70: Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating - H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS - F04D: NON-POSITIVE-DISPLACEMENT PUMPS (engine fuel-injection pumps F02M; ion pumps H01J41/12; electrodynamic pumps H02K44/02) - F24F: AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING (removing dirt or fumes from areas where they are produced B08B15/00; vertical ducts for carrying away waste gases from buildings E04F17/02; tops for chimneys or ventilating shafts, terminals for flues F23L17/02) - G05B: CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS (systems for controlling or regulating non-electric variables G05D; systems for regulating electric or magnetic variables G05F; control devices or systems insofar as characterised by mechanical features only G05G) - G11B: INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER (recording measured values in a way that does not require playback through a transducer G01D9/00; recording or playback apparatus using mechanically marked tape, e.g. punched paper tape, or using unit records, e.g. punched or magnetically marked cards G06K; transferring data from one type of record carrier to another G06K1/18; circuits for coupling output of reproducer to radio receiver H04B1/20; gramophone pick-ups or like acoustic electromechanical transducers or circuits therefor H04R) - Y02B: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS ## Abstract Embodiments of the present disclosure provide a system and method for heat dissipation of a storage device. The system comprises: a guiding rail mounted in an enclosure of the storage device; a set of fans arranged on the guiding rail and being movable on the guiding rail, the set of fans being configured to dissipate heat of a disk assembly of the storage device; and a controller configured to: obtain a temperature of the disk assembly at a first time point; and in response to the temperature of at least one disk in the disk assembly exceeding a threshold temperature, perform at least one of the following: adjusting a position of at least one of the set of fans; and increasing a rotational speed of at least one of the set of fans. ## Claims ### Claim 1 A system for heat dissipation of a storage device, comprising: a guiding rail mounted in an enclosure of the storage device; a set of fans arranged on the guiding rail and being movable on the guiding rail, the set of fans being configured to dissipate the heat of a disk assembly of the storage device; and a controller configured to: obtain a temperature of the disk assembly at a first time point; and in response to the temperature of at least one disk in the disk assembly exceeding a threshold temperature, perform at least one of the following: adjusting a position of at least one of the set of fans; and increasing a rotational speed of at least one of the set of fans. ### Claim 2 (depends on 1) The system of claim 1, wherein the at least one fan has an electric motor mounted thereon, the electric motor having a rotation shaft rotatable on the guiding rail and being configured to drive, in response to receiving a control signal from the controller, the at least one fan on the guiding rail towards the at least one disk having the temperature exceeding the threshold temperature. ### Claim 3 (depends on 2) The system of claim 2, wherein the controller is further configured to: determine a first fan from the set of fans based on a first position of the at least one disk having the temperature exceeding the threshold temperature, a distance between a second position where the first fan is located and the first position being less than a predetermined distance. ### Claim 4 (depends on 3) The system of claim 3, wherein the controller is further configured to: determine a first distance between the second position where the first fan is located and a third position, the third position being located between the first fan and a second fan adjacent to the first fan in a direction of driving of the first fan; and in response to the first distance exceeding a movement distance indicated by the control signal, move the first fan. ### Claim 5 (depends on 4) The system of claim 4, wherein the controller is further configured to: in response to the first distance being less than the movement distance indicated by the control signal, increase the rotational speed of the first fan. ### Claim 6 (depends on 4) The system of claim 4, wherein the controller is further configured to: obtain a temperature of the disk assembly at a second time point, the second time point being later than the first time point; and in response to the temperature of the at least one disk still exceeding the threshold temperature, increase the rotational speed of the first fan. ### Claim 7 (depends on 1) The system of claim 1, wherein the controller is further configured to: in response to a temperature of more than one disk in the disk assembly exceeding the threshold temperature, increase a rotational speed of at least one of the set of fans. ### Claim 8 (depends on 1) The system of claim 1, wherein at least one anti-collision component is provided on opposite sides of adjacent fans in the set of fans. ### Claim 9 A method for heat dissipation of a storage device, comprising: obtaining a temperature of a disk assembly of the storage device at a first time point; and in response to the temperature of at least one disk in the disk assembly exceeding a threshold temperature, performing at least one of the following for a set of fans: adjusting a position of at least one of the set of fans; and increasing a rotational speed of at least one of the set of fans; wherein the set of fans are arranged on a guiding rail mounted in an enclosure of the storage device and is movable on the guiding rail, the set of fans being configured to dissipate the heat of the disk assembly of the storage device. ### Claim 10 (depends on 9) The method of claim 9, wherein the adjusting comprises: transmitting a control signal to the at least one fan to drive an electric motor mounted on the at least one fan, such that the at least one fan drives towards the at least one disk having the temperature exceeding the threshold temperature. ### Claim 11 (depends on 10) The method of claim 10, wherein the driving comprises: determining a first fan from the set of fans based on a first position of the at least one disk having the temperature exceeding the threshold temperature, a distance between a second position where the first fan is located and the first position being less than a predetermined distance. ### Claim 12 (depends on 11) The method of claim 11, further comprising: determining a first distance between the second position where the first fan is located and a third position, the third position being located between the first fan and a second fan adjacent to the first fan in a direction of driving of the first fan; and in response to the first distance exceeding than a movement distance indicated by the control signal, moving the first fan. ### Claim 13 (depends on 12) The method of claim 12, further comprising: in response to the first distance being less than the movement distance indicated by the control signal, increasing the rotational speed of the first fan. ### Claim 14 (depends on 12) The method of claim 12, further comprising: obtaining a temperature of the disk assembly at a second time point, the second time point being later than the first time point; and in response to the temperature of the at least one disk still exceeding the threshold temperature, increasing the rotational speed of the first fan. ### Claim 15 (depends on 9) The method of claim 9, further comprising: in response to a temperature of more than one disk in the disk assembly exceeding the threshold temperature, increase a rotational speed of at least one of the set of fans.