Patent Application
20190171606
Organizations such as on-line retailers, Internet service providers, search providers, financial institutions, universities, and other computing-intensive organizations often conduct computer operations from large scale computing facilities. Such computing facilities house and accommodate a large amount of server, network, and computer equipment to process, store, and exchange data as needed to carried out an organization's operations. Typically, a computer room of a computing facility includes many server racks. Each server rack, in turn, includes many servers and associated computer equipment.
Computer systems typically include a number of components that generate waste heat. Such components include printed circuit boards, mass storage devices, power supplies, and processors. For example, some computers with multiple processors may generate 250 watts of waste heat. Some known computer systems include a plurality of such larger, multiple-processor computers that are configured into rack-mounted components, and then are subsequently positioned within a rack system. Some known rack systems include 40 such rack-mounted components and such rack systems will therefore generate as much as 10 kilowatts of waste heat. Moreover, some known data centers include a plurality of such rack systems.
Some servers include a number of hard disk drives (for example, eight or more hard disk drives) to provide adequate data storage. Typically, the hard disk drives for servers are of a standard, off-the-shelf type. Standard, off-the-shelf hard disk drives are often a cost effective solution for storage needs because such hard disk drives can be obtained at relatively low cost. Nonetheless, in server designs using such standard hard disk drives, the arrangement of the hard disk drives may leave a substantial amount of wasted space in the server chassis. This wasted space, especially when multiplied over many servers in a rack, may result in inadequate computing or storage capacity for a system.
Hard disk drives include motors and electronic components that generate heat. Some or all of this heat must be removed from the hard disk drives to maintain continuous operation of a server. The amount of heat generated by the hard disk drives within a data room may be substantial, especially if all of the hard disk drives are fully powered up at all times.
As with other components, hard disk drives fail from time to time while in service. These failures reduce the storage capacity of a system. To restore capacity, servers may need to be powered down and removed from a rack so that the defective hard disk drives can be replaced or repaired.
In some systems, such as archival, backup, or disaster recovery systems, a vast amount of may need to be stored, though any particular piece of the stored data may be accessed only rarely. Magnetic tape systems are often used to store archival data. Magnetic tape drives, however, may be fragile and susceptible to adverse environmental conditions, such as heat and humidity. In addition, some magnetic tape drives have relatively high failure rates.
While the invention is susceptible to various modifications and alternative forms, specific embodiments thereof are shown by way of example in the drawings and will herein be described in detail. It should be understood, however, that the drawings and detailed description thereto are not intended to limit the invention to the particular form disclosed, but on the contrary, the intention is to cover all modifications, equivalents and alternatives falling within the spirit and scope of the present invention as defined by the appended claims. The headings used herein are for organizational purposes only and are not meant to be used to limit the scope of the description or the claims. As used throughout this application, the word “may” is used in a permissive sense (i.e., meaning having the potential to), rather than the mandatory sense (i.e., meaning must). Similarly, the words “include,” “including,” and “includes” mean including, but not limited to.
Various embodiments of computer systems, and systems and methods for performing computing operations, are disclosed. According to one embodiment, a system for storing data includes a rack, one or more data storage modules coupled to the rack, and one or more data control modules coupled to the rack. The data storage modules may include a chassis, two or more backplanes coupled to the chassis, and one or more mass storage devices (for example, hard disk drives) coupled to the backplanes. The data control modules may access the mass storage devices in the data storage modules.
According to one embodiment, a data storage module includes a chassis, two or more backplanes coupled to the chassis in a primarily horizontal orientation, and two or more hard disk drives coupled to each of the backplanes.
According to one embodiment, a data storage module includes a chassis, one or more backplanes coupled to the chassis in a primarily horizontal orientation, two or more mass storage devices coupled to each of the backplanes, and one or more air passages under the backplanes. The air passages include an air inlet and an air outlet. The air passage allows air to move from the air inlet to the air outlet to remove heat from at least one of the mass storage devices.
According to one embodiment, a method of providing data storage includes providing mass storage devices on two or more backplanes coupled to a common chassis. Some of the mass storage devices are powered down or placed on standby. When the data on one of the mass storage devices needs to be accessed, the mass storage device is powered up or awakened from standby.
As used herein, “air handling system” means a system that provides or moves air to, or removes air from, one or more systems or components.
As used herein, “air moving device” includes any device, element, system, or combination thereof that can move air. Examples of air moving devices include fans, blowers, and compressed air systems.
As used herein, an “aisle” means a space next to one or more elements, devices, or racks.
As used herein, “backplane” means a plate or board to which other electronic components, such as mass storage devices, circuit boards, can be mounted. In some embodiments, hard disk drives are plugged into a backplane in a generally perpendicular orientation relative to the face of the backplane. In some embodiments, a backplane includes and one or more power buses that can transmit power to components on the backplane, and one or more data buses that can transmit data to and from components installed on the backplane.
As used herein, “ambient” means, with respect to a system or facility, the air surrounding at least a portion of the system or facility. For example, with respect to a data center, ambient air may be air outside the data center, for example, at or near an intake hood of an air handling system for the data center.
As used herein, a “cable” includes any cable, conduit, or line that carries one or more conductors and that is flexible over at least a portion of its length. A cable may include a connector portion, such as a plug, at one or more of its ends.
As used herein, “circuit board” means any board or plate that has one or more electrical conductors transmitting power, data, or signals from components on or coupled to the circuit board to other components on the board or to external components. In certain embodiments, a circuit board is an epoxy glass board with one or more conductive layers therein. A circuit board may, however, be made of any suitable combination of materials.
As used herein, “chassis” means a structure or element that supports another element or to which other elements can be mounted. A chassis may have any shape or construction, including a frame, a sheet, a plate, a box, a channel, or a combination thereof. In one embodiment, a chassis is made from one or more sheet metal parts. A chassis for a computer system may support circuit board assemblies, power supply units, data storage devices, fans, cables, and other components of the computer system.
As used herein, “computing” includes any operations that can be performed by a computer, such as computation, data storage, data retrieval, or communications.
As used herein, “computer system” includes any of various computer systems or components thereof. One example of a computer system is a rack-mounted server. As used herein, the term computer is not limited to just those integrated circuits referred to in the art as a computer, but broadly refers to a processor, a server, a microcontroller, a microcomputer, a programmable logic controller (PLC), an application specific integrated circuit, and other programmable circuits, and these terms are used interchangeably herein. In the various embodiments, memory may include, but is not limited to, a computer-readable medium, such as a random access memory (RAM). Alternatively, a compact disc-read only memory (CD-ROM), a magneto-optical disk (MOD), and/or a digital versatile disc (DVD) may also be used. Also, additional input channels may include computer peripherals associated with an operator interface such as a mouse and a keyboard. Alternatively, other computer peripherals may also be used that may include, for example, a scanner. Furthermore, in the some embodiments, additional output channels may include an operator interface monitor and/or a printer.
As used herein, “data center” includes any facility or portion of a facility in which computer operations are carried out. A data center may include servers dedicated to specific functions or serving multiple functions. Examples of computer operations include information processing, communications, testing, simulations, power distribution and control, and operational control.
As used herein, “data center module” means a module that includes, or is suitable for housing and/or physically supporting, one or more computer systems that can provide computing resources for a data center.
As used herein, to “direct” air includes directing or channeling air, such as to a region or point in space. In various embodiments, air movement for directing air may be induced by creating a high pressure region, a low pressure region, or a combination both. For example, air may be directed downwardly within a chassis by creating a low pressure region at the bottom of the chassis. In some embodiments, air is directed using vanes, panels, plates, baffles, pipes or other structural elements.
As used herein, “member” includes a single element or a combination of two or more elements (for example, a member can include two or more sheet metal parts fastened to one another.
As used herein, a “module” is a component or a combination of components physically coupled to one another. A module may include functional elements and systems, such as computer systems, circuit boards, racks, blowers, ducts, and power distribution units, as well as structural elements, such a base, frame, housing, or container.
As used herein, “primarily horizontal” means more horizontal than vertical. In the context of an installed element or device, “primarily horizontal” includes an element or device whose installed width is greater than its installed height.
As used herein, “primarily vertical” means more vertical than horizontal. In the context of an installed element or device, “primarily vertical” includes an element or device whose installed height is greater than its installed width. In the context of a hard disk drive, “primarily vertical” includes a hard disk drive that is installed such that the installed height of the hard disk drive is greater than the installed width of the hard disk drive.
As used herein, a “rack” means a rack, container, frame, or other element or combination of elements that can contain or physically support one or more computer systems.
As used herein, “room” means a room or a space of a building. As used herein, “computer room” means a room of a building in which computer systems, such as rack-mounted servers, are operated.
As used herein, a “space” means a space, area or volume.
As used herein, “shelf” means any element or combination of elements on which an object can be rested. A shelf may include, for example, a plate, a sheet, a tray, a disc, a block, a grid, or a box. A shelf may be rectangular, square, round, or another shape. In some embodiments, a shelf may be one or more rails.
As used herein, “shock absorbing”, as applied to a supporting element for another element, means that the supporting element absorbs mechanical energy and/or dampens shock and/or vibration loads. A shock-absorbing material may be elastic, viscoelastic, viscous, or combinations thereof.
In various embodiments, a data storage system includes one or more data storage modules that are accessed from, and controlled by, a data controller external to the data storage modules. In some embodiments, a data control module and one or more data storage modules coupled to the data control module are included within a rack.
Mass storage devices in data storage modules 106 are coupled to data control module 104. Data control module 104 may access data on any or all of the mass storage devices in data storage modules 106a, 106b, and 106c.
In various embodiments, a data storage module includes two or more circuit boards, each of which carry, and provide electrical connections for, multiple mass storage devices. For example, in the embodiment illustrated in
In the embodiment shown in
System 100 includes bus 112a, 112b, and 112c. Bus 112a couples data control module 104 with data storage module 106a. Bus 112b couples data control module 104 with data storage module 106b. Bus 112c couples data control module 104 with data storage module 106c. Buses 112a, 112b, and 112c may each include one or more cables between data control module 104 and data storage modules 106a, 106b, and 106c. Each of buses 112a, 112b, and 112c may provide a connection for data input/output between data controller 104 and one of the data storage modules. In some embodiments, each of buses 112a, 112b, and 112c may provide for data I/O on multiple channels (for example, four channels). Each of data storage modules 106a, 106b, and 106c may be assigned a separate identifier.
In various embodiments, data access and transfer between a data controller and data storage modules in a system may be carried out by way of any suitable computer bus. In some embodiments, data access and transfer is carried out by way of a Serial attached SCSI (SAS) bus. In some embodiments, data access and transfer is carried out by way of a Serial Advance Technology Attachment (SATA) bus.
Connections within each of storage modules 106a, 106b, and 106c may include chaining backplanes within a data storage module. For example, as illustrated in
In some embodiments, each of backplanes 108 includes an expander chip. The expander chip may enable communication with the various mass storage devices 110. Each of backplanes 108 may also include a cascading port for chaining backplanes 108 one to another. In some embodiments, backplanes 108 includes circuitry for conditioning power to mass storage devices 110. In certain embodiments, backplanes 108 may each include a power supply for mass storage devices 110 on the backplane.
For the sake of clarity, the backplanes and mass storage devices are shown only for data storage module 106a. The backplanes and mass storage devices for data storage modules 112b and 112c may be similar to those of data storage module 112a.
Each backplane may include an output for each of the installed mass storage devices 110. In one embodiment, the data input/output interface to backplanes includes four channels., In one embodiment, each of mass storage devices 110 has a 500 GB storage capacity.
Although 3 modules are shown in
Data storage module 122 includes data storage module chassis 126, data storage assemblies 128, power supply unit 130. Data storage assemblies 128 include backplane circuit board assemblies 132 and hard disk drives 134. Backplane circuit board assemblies 132 may be mounted horizontally in data storage module chassis 126. Hard disk drives 134 are installed on backplane circuit board assemblies 132. Hard disk drives 134 may be installed in a vertical orientation. In some embodiments, hard disk drives 134 are installed such that the installed height is the largest dimension of the hard disk drive.
Power supply unit 130 may be coupled to backplane circuit board assemblies 132. Power supply unit 130 may supply power to backplane circuit board assemblies 132 and hard disk drives 134.
Data control module 124 includes data control module chassis 140, control circuit board assemblies 142, and power supply unit 144. Control circuit board assemblies 142 and power supply unit 144 may be mounted on data control module chassis 140. Control circuit board assemblies 142 may access data on hard disk drives 134.
Power supply unit 144 may be coupled to control circuit board assemblies 142. Power supply unit 144 may supply power to control circuit board assemblies 142.
In one embodiment, data storage module 122 is about 4 U in height and data control module 124 is about 1 U in height.
In
In various embodiments, a computing unit includes a power supply that conforms to an industry-recognized standard. In some embodiments, a power supply for a computing unit has a form factor in accordance with an industry-recognized standard. In one embodiment, power supply units 130 and 144 have a standard 1 U form factor. Examples of other standards for a power supply and/or a power supply form factor include 2 U, 3 U, SFX, ATX, NLX, LPX, or WTX.
In the embodiment shown in
In some embodiments, a rack includes two or more data storage subsystems having vertically oriented hard disk drives.
In some embodiments, data storage modules 166 include two or more horizontally mounted backplanes carrying vertically oriented hard disk drives. For example, data storage modules 168 may each include 6 backplanes and hard disk drives arranged as described above for data storage module 122.
In one embodiment, each of data storage modules 168 is 4 U in height and each data control module 166 is 1 U in height, for a total of 13 U of height for each sub-system, and a total of 39 U used for the rack. Nevertheless, in various embodiments, data storage modules and data control modules may be any suitable height.
Although in the embodiment shown in
In some embodiments, backplanes are mounted to reduce or minimize transmission of shock and/or vibration loads between each hard disk drive and a chassis and between hard disk drives within a module.
In some embodiments, elements of disk drive backplanes and a chassis may combine to form a box section mounting for hard disk drives. For example, chassis bottom panel 184, rails 186, and one or more of backplane circuit board assemblies 132 may combine to form a rectangular box section. The box section may reduce deformation of a chassis, such as sagging of chassis bottom panel 184, which might occur if hard disk drives 134 were installed directly on bottom panel 184 of data storage module chassis 126. In some embodiments, rails, pads, a tray, or similar structural elements may serve multiple functions, including forming the box section structure, space for cable runs, and space for air flow.
In some embodiments, a system includes an air passage under two or more mass storage device backplanes.
As shown in
Still referring to
In some embodiments, air from power supply exit plenum may mix with air coming into data storage module chassis 126 before passing under backplane circuit boards 132. In certain embodiments, exhaust air from power supply unit 144 may be segregated from other air entering data storage module chassis 130, for example, by a duct that carries the exhaust air from the power supply unit to the rear of data storage module chassis 126.
In certain embodiments, a power supply is oriented in a module such that the exhaust air from the module is directed under mass storage backplanes in a chassis. For example, power supply unit 130 shown in
In some embodiments, air flowing under mass storage device backplanes may be vented upwardly so as to remove heat from the mass storage devices. For example, as shown in
In some embodiments, the size and number of opening in a backplane may be selected to tune the air flow through various hard disk drives in a chassis. For example, in one embodiment, the vents for the backplanes near the rear of the chassis may larger than the vents for the backplanes near the front of the chassis, since a greater airflow may be required near the rear of the chassis because of the relatively warm air in that portion of the chassis.
Data storage module 220 includes chassis assembly 222, power supply unit 224, and hard disk drives 226. Chassis assembly 222 includes base panel 228, front housing 230, shelf 232, cross braces 234, and left side panel 236. Chassis assembly 222 may also include a right side panel (a right-side panel has been omitted from
In the embodiment shown in
In some embodiments, shelf 232 is mounted on shock absorbing elements. For example, an array of shock absorbing pads may be provided between shelf 232 and base panel 228.
Cross braces 234 are mounted on shelf 232. Hard disk drives 226 are installed on backplane circuit board assemblies 225 between cross braces 234.
In the embodiment shown in
Cross braces 234 include guide rims 249. Guide rims 249 include openings 246. Cross braces 234 may stiffen chassis assembly 222 and inhibit sagging of chassis elements under the weight of hard disk drives 226. Guide rims 249 may serve as guides for hard disk drives 226. Openings 246 may provide a path for front-to-back air flow through cross braces 234 between adjacent hard disk drives 226.
Each of hard disk drives 226 may be provided with a pair of opposing rails 254. In some embodiments, rails 254 may serve as a handle for hard disk drives 226.
Backplane circuit board assembly 225 may include tabs 255 and mounting pads 256. In some embodiments, mounting pads 256 are made of a shock-absorbing material. In certain embodiments, mounting pads 256 include threads (for example, for installing a backplane on a chassis). Tabs 260 may engage in slot 247 on cross brace 234.
Rails 254 of hard disk drives 226 may slide in between the edges of adjacent rims 249. Hard disk drives 226 may slide in and out from the top of the chassis.
In some embodiments, rails 254 provide shock or vibration isolation for the hard disk drives. In certain embodiments, for example, rails 254 are made of, or include, an elastomeric material, such as rubber. The rail may dampen shock or vibration loads and/or isolate a particular drive from vibration in other drive, on the backplane, or external to the backplane.
Referring again to
In some embodiments, a data storage module includes a data controller and two or more backplanes having multiple mass storage devices. The data controller and the backplanes may be supported on a common chassis. In some embodiments, the module includes hard disk drives mounted on the backplanes in a vertical orientation.
Data storage assemblies 284 include backplane circuit board assemblies 290 and hard disk drives 292. Backplane circuit board assemblies 290 may be mounted horizontally in data storage module chassis 288. Hard disk drives 292 are installed on backplane circuit board assemblies 290. Hard disk drives 292 are installed in a vertical orientation, similar to that described above relative to
Power supply units 286 may be coupled to backplane circuit board assemblies 290. Power supply units 286 may supply power to backplane circuit board assemblies 290 and hard disk drives 292.
In some embodiments, air flows from front to rear in a module such that air downstream from a controller or motherboard assembly flows under two or more mass data storage backplanes. For example, as shown by the arrows in
In some embodiments, mass data storage is provided on multiple backplanes in a common chassis.
At 402, some or all of the mass storage devices on the backplanes may be placed into operation. For example, the mass storage devices may provide storage capacity in a data center.
At 404, some or all of the mass storage devices on the backplanes may be powered down or placed on standby. The powered down or standby mass storage devices may be considered to be in a cold storage state. At 406, one or more of the mass storage devices that are powered down or on standby are awakened. At 408, data from the mass storage devices that have been awakened is accessed.
Upon failure of a hard disk drive in a module, the module may be removed or withdrawn from its installed position in a rack. The failed hard disk drive may be removed and replaced by way of the top of the module.
In certain embodiments, a computing module includes mass storage devices that are mounted in two or more different orientations. In one embodiment, a computing unit includes one or more hard disk drives mounted in a horizontal orientation and one or more hard disk drives mounted in a vertical orientation.
In some embodiments, hard disk drives in a data storage module are standard, off-the-shelf disk drives. Examples of suitable hard disk drive form factors may include 3.5″, 5.25″, and 2.5″. In one embodiment, a standard 3.5″ hard disk drive is installed such that the installed height of the hard disk drive is the largest dimension.
In some embodiments, rack-mounted computing modules are commonly cooled by a cooling air system that delivers air to the rack. To remove heat from computing modules installed in the rack, an air handling system may be operated to cause air to flow in computer room and through the rack system. As the air reaches the front of each of computing modules, the air may pass through the chassis of the computing modules. After passing through the chassis, the heated air may exit the rear of the rack system and flow out of the computer room. In certain embodiments, computing modules may have on board fans in addition to, or lieu of, a central cooling system. In certain embodiments, a rack may have a fan that supplies cooling air to all of the computing modules in the rack.
Although in the embodiments described above, the hard disk drives are mounted on pads and rails, in various embodiments, hard disk drives or other data storage devices may be mounted to a chassis using other mounting elements. For example, hard disk drives and/or backplanes for the disk drives may be mounted on square tubes that support the drives and raise the drives above the bottom of a chassis.
In some embodiments, a rack system includes rack-mounted fans external to computer systems in the rack. The rack-mounted fans may provide air flow through the computer systems.
For clarity, modules in many of the figures herein have been shown with a simple box outline around functional components. In various embodiments, a module or a chassis for a module may include an enclosure, a tray, a mounting plate, a combination thereof, as well as various other structural elements.
Although in the embodiments described above, some of the data storage modules have been described as being 4 U in height, modules may in various embodiments be 3 U, 4 U, 6 U or any other height or dimensions.
Although the embodiments above have been described in considerable detail, numerous variations and modifications will become apparent to those skilled in the art once the above disclosure is fully appreciated. It is intended that the following claims be interpreted to embrace all such variations and modifications.
This application is a continuation of U.S. patent application Ser. No. 15/728,254, filed on Oct. 9, 2017, which is a divisional of U.S. patent application Ser. No. 15/231,618, filed Aug. 8, 2016, now U.S. Pat. No. 9,785,600, which is a continuation of U.S. patent application Ser. No. 14/292,528, filed May 30, 2014, now U.S. Pat. No. 9,411,525, which is a continuation of U.S. patent application Ser. No. 13/069,065, filed Mar. 22, 2011, now U.S. Pat. No. 8,743,549, which are hereby incorporated by reference herein in their entirety.
| Number | Date | Country | |
|---|---|---|---|
| Parent | 15231618 | Aug 2016 | US |
| Child | 15728254 | US |
| Number | Date | Country | |
|---|---|---|---|
| Parent | 15728254 | Oct 2017 | US |
| Child | 16265802 | US | |
| Parent | 14292528 | May 2014 | US |
| Child | 15231618 | US | |
| Parent | 13069065 | Mar 2011 | US |
| Child | 14292528 | US |
