24 results about "Disk pack" patented technology

In one embodiment, a system for managing a virtualization environment comprises a plurality of host machines, one or more virtual disks comprising a plurality of storage devices, a virtualized file server (VFS) comprising a plurality of file server virtual machines (FSVMs), wherein each of the FSVMs is running on one of the host machines and conducts I / O transactions with the one or more virtual disks, and a virtualized file server self-healing system configured to identify one or more corrupt units of stored data at one or more levels of a storage hierarchy associated with the storage devices, wherein the levels comprise one or more of file level, filesystem level, and storage level, and when data corruption is detected, cause each FSVM on which at least a portion of the unit of stored data is located to recover the unit of stored data.

A rotor of an electric asynchronous machine including a shaft, a rotor core and short-circuit rings attached to end faces of the rotor. The shaft has an outer lateral radial surface, a cavity extending axially, at least one passageway located on the lateral surface, and at least one channel connecting the cavity to the passageway. The rotor core has at least one channel extending therein. At least one of the short-circuit rings is composed of at least two ring-shaped disks interconnected to form a disk pack. At least one disk of at least one short-circuit ring has recesses arranged such that a channel structure is formed in the short-circuit ring and is in fluidic connection with at least one channel of the rotor laminated core and fluidically connects the at least one passageway on the shaft lateral surface to at least one channel of the rotor core.

The invention provides a data management system, a data management method, a data management device and terminal equipment, the data management system comprises an index construction module, the index construction module is used for constructing a logic space for a disk and constructing an address index between the disk and the logic space, the disk comprises a three-layer storage device TLC and a four-layer storage device QLC, and the logic space is used for constructing an address index between the three-layer storage device TLC and the four-layer storage device QLC; each of the TLC and the QLC comprises a plurality of physical blocks, the logic space comprises logic blocks in one-to-one correspondence with the plurality of physical blocks, the address index comprises a plurality of index entries, and each index entry is used for recording one physical block and the corresponding logic block. Through the data management system, the storage space of the terminal equipment has the characteristics of high performance and large capacity, and the effect of efficiently managing the data in the storage space of the terminal equipment is realized.

Provided is a magnetic recording device, said magnetic recording device comprising a plurality of magnetic disks which each include a substrate and a magnetic recording layer formed on the substrate and a spacer which is disposed between the plurality of magnetic disks and which is for stacking the magnetic disks with a prescribed interval therebetween, wherein after a thermal shock test, the change in the flatness of the magnetic disks is not more than 5.0 μm. In the thermal shock test, a temperature raising and lowering program in which, inside a thermal shock device, the magnetic recording device is kept at 70°C for 30 minutes, subsequently cooled to -40°C over two minutes and kept at -40°C for 30 minutes, and then increased in temperature to 70°C over two minutes is repeated for five cycles.

Provided is a magnetic disk device capable of efficiently searching for commands. According to the present embodiment, a magnetic disk device includes a magnetic disk, a memory, and a controller. The disk includes a plurality of regions to which unique addresses are assigned, respectively. The memory stores a plurality of unprocessed commands. The controller stores a database of a tree-like structure in a memory. The configuration includes a plurality of nodes associated with each of a plurality of addresses specified by each of a plurality of unprocessed commands, and two of the plurality of nodes are associated with each other. The controller selects a candidate command from a command associated with an address larger than the start address and closest to the start address and a command associated with an address smaller than the start address and closest to the start address, the candidate command being a candidate to be executed next among the plurality of unprocessed commands.

The utility model relates to the technical field of solid state disks, and discloses a solid state disk adaptable to a low-temperature environment, which comprises a hard disk pack and a circuit, the circuit is assembled on the front side of the hard disk pack, a sealing mechanism is slidably arranged at the top of the hard disk pack, the sealing mechanism comprises a sealing plate, the sealing plate is slidably connected with the hard disk pack, and a limiting block is assembled at the bottom of the sealing plate. L-shaped clamping blocks are assembled on the two sides of the bottom of the sealing plate, clamping mechanisms are assembled on the two sides of the hard disk set and comprise T-shaped arms, clamping plates are connected to the outer portions of the T-shaped arms, and springs are assembled between the T-shaped arms and the hard disk set. According to the solid state disk capable of adapting to the low-temperature environment, the hard disk pack is prevented from falling off, meanwhile, when the clamping mechanism limits the solid state disk pack, the clamping mechanism can be limited to return by the closing mechanism, the clamping mechanism can reinforce the closing mechanism when not in use, and the situation that parts in the hard disk pack are affected by low temperature due to movement of the closing mechanism is avoided.

The application discloses a magnetic recording device, a multi-state disk and a read-write method, and belongs to the field of magnetic storage. The magnetic recording device comprises a substrate and a magnetic recording film above the substrate. The magnetic recording film is circular and comprises three ferromagnetic layers separated by two non-magnetic intermediate layers. The easy magnetization directions of the three ferromagnetic layers are along the x, y and z directions respectively. The z direction is the vertical direction, and the x and y directions are in-plane directions and are along the radial direction and the tangential direction respectively. The multi-state disk comprises the magnetic recording device, a read head, a write head and magnetic shielding layers on both sides of the read head. The write head comprises a vertical magnetic pole and two pairs of horizontal magnetic poles, and coils wound on the magnetic poles. The read head comprises a spin current generation layer and a film layer structure (a magnetic tunnel junction, a spin valve or a Hall bar). The application can improve the storage density of the magnetic recording device, thereby greatly improving the storage density of the disk based on the magnetic recording device.

A magnetic disk used in a hard disk drive device includes a substrate; a magnetic recording layer; and a heat insulating layer provided between the substrate and the magnetic recording layer. Even though a substrate has low heat resistance, as a result of providing the heat insulating layer, the substrate can be used as a substrate for a magnetic disk that can withstand heat treatment (high-temperature annealing).

The invention relates to a flexible heating magnetic disk and permanent magnet induction heating equipment, the magnetic disk comprises a plurality of groups of magnetic steels, a central guide column, a central sliding disk, a locking rod and a turning mechanism, the magnetic steels are distributed along the circumferential direction, and the magnetic steels move along the radial direction to adjust the disk radius of the flexible magnetic disk; a plurality of clamping grooves are formed in the central guide column in the axial direction; the central sliding disc is sleeved outside the central guide column and can move along the axial direction of the central guide column; the locking rod is arranged on the center sliding disc in a penetrating mode in the radial direction, clamping teeth are arranged at the end, close to the center guide column, of the locking rod, and the locking rod enables the clamping teeth to be clamped into the clamping grooves by being close to the center guide column or enables the clamping teeth to be separated from the clamping grooves by being far away from the center guide column. The input end of the turning mechanism is connected with the locking rod, and the output end of the turning mechanism is connected with the magnetic steel and used for converting axial movement of the center sliding disc into radial movement of the magnetic steel. The axial movement of the central sliding disc can be converted into the radial movement of the magnetic steel in a limited space, so that the radial position of the magnetic steel is adjusted, and the magnetic steel is adaptive to different hubs.

This application provides a disk data processing method, apparatus, device, and storage medium. The electronic device includes M disks, each disk including at least two logical partitions, the M disks including N disk groups, and each disk group including logical partitions from at least two disks. Each disk group contains at least one backup partition used to back up data from other logical partitions within the disk group. The method includes: determining whether to perform data repair on a first logical partition of a first disk among the M disks; if so, obtaining the first disk group containing the first logical partition; determining a first backup logical partition of the first logical partition from the first disk group; and repairing the data of the first logical partition using backup data stored in the first backup logical partition. This method improves the concurrent processing efficiency during disk repair and reduces the read / write pressure on the disk.

The present invention discloses a variable magnetic gap type magnetic pole rotating magnetic grabber and a control method thereof. The variable magnetic gap type magnetic pole rotating magnetic grabber includes a bracket, a lower disk, an upper disk, a rotation drive mechanism and a translation drive mechanism. The lower disk includes a turntable and a plurality of lower magnets. The turntable is rotatably arranged on the bracket, and the plurality of lower magnets are evenly fixed to the turntable along the circumferential direction. The upper disk includes a lifting disk and a plurality of upper magnets. The lifting disk can slide relative to the bracket, and the lifting disk and the turntable are arranged opposite to each other. The rotation drive mechanism is used to drive the turntable to rotate. The translation drive mechanism is used to drive the lifting disk to move so as to approach or move away from the turntable. The beneficial effect of the present invention is that while rotating the movable magnet, the action of magnet variable gap adjustment is also incorporated, which not only enriches the changing trend of the magnetic force, making the magnetic force regulation smoother and more flexible, but also realizes the precise control of the magnetic force at each stage.

This application discloses a system installation method, relating to the field of computer processing technology. The method includes: obtaining an installation package for a first system; responding to an installation command for the first system, partitioning a first physical storage area from an unused storage area of ​​a second physical storage region in a target physical storage disk, wherein a second system is installed in the second physical storage area; and installing the installation package into the first physical storage area, so that the target physical storage disk includes both the first and second systems. This application enables the installation of multiple systems on a single physical storage disk, eliminating the need to first bear the computational overhead of virtual machines when multiple systems are running simultaneously, thus reducing the computational overhead of the device when multiple systems are running concurrently.

This utility model discloses a variable disk with adjustable sliding dimensions, belonging to the field of heating. The variable disk with adjustable sliding dimensions includes a housing. Multiple sets of magnet assemblies are slidably disposed on the housing. Each magnet assembly includes a magnetic box containing a permanent magnet, and the multiple magnetic boxes are circumferentially distributed on the housing. A driving element is connected to the housing, and the driving end of the driving element drives the magnetic boxes to slide and adjust via a reduction gear transmission assembly. By slidably distributing multiple sets of magnet assemblies on the housing, and allowing the magnetic boxes containing permanent magnets to be slidably disposed on the housing, the position of the magnetic boxes can be adjusted, thereby adjusting the overall dimensions of the disk to suit different wheel hub workpieces.

A braking device for braking a vehicle, the braking device comprising: a hydraulically actuated service brake, wherein the service brake comprises a service brake cylinder configured to transfer a service braking force to a disk pack unit while braking and the disk pack unit configured for braking the vehicle depending on the braking force, and a hydraulically actuated parking brake, wherein the parking brake is a spring applied hydraulic release brake configured for braking the vehicle depending on a parking brake force, wherein the parking brake comprises a spring braking unit configured to generate a default parking brake force and to transfer the default parking brake force onto a parking brake cylinder, and a hydraulic park braking control unit configured to generate a release force and to transfer the release force onto the parking brake cylinder in order to control the parking brake force.

The application relates to a differential lock assembly comprising: a differential; a friction pack; and a piston bearing actuator system comprising a piston, a bearing, and an actuator abutting the friction pack, where the piston is an outer race for the bearing and the actuator is an inner race for the bearing. The friction pack may be a disk pack.Further, an axle assembly comprising: a first housing; a first axle shaft; a second axle shaft; and the differential lock assembly. And, the application relates to a method of assembling the differential lock assembly and the piston bearing actuator assembly thereof.

Provided are a magnetic disk that is suitable for use in thermal assist magnetic recording, a magnetic disk substrate, usage of the magnetic disk substrate, and a method for manufacturing the magnetic disk.　The present disclosure pertains to a magnetic disk which has: a substrate having a pair of main surfaces and an outer circumferential end surface; and a magnetic layer having an L10 structure on the pair of main surfaces and the outer circumferential end surface of the substrate. The straightness of the magnetic disk measured under the following measurement condition after heating the magnetic disk under the following heating condition is 90 μm or less. (Heating condition) The magnetic disk is heated such that the surface temperature reaches 600°C from room temperature in 25 seconds, then is heated such that the surface temperature reaches 700°C in 35 seconds, and then is cooled such that the surface temperature reaches room temperature in 120 seconds. (Measurement condition of straightness) By using a surface roughness measurement device, the values of the maximum valley depths Sv are measured in a measurement range of at least 88 mm length in three directions that are different from each other by 120°, and the number-average value of the maximum valley depths Sv are obtained as the value of straightness.

This application provides a method, device, storage medium, and computer program product for detecting slow disks. The method includes: acquiring M sample datasets; wherein each sample dataset is obtained in real time based on the first indicator information of all first disks in the storage cluster from different collection points, and M is a positive integer; for each sample dataset, calculating a first distance between each second disk in the sample dataset and the sample dataset; wherein the first distance is used to characterize the similarity between each second disk and the center of the sample dataset, and the first disk contains the second disk; and determining the slow disk from each second disk based on each first distance, thereby improving the accuracy of slow disk detection.

A system and method for forensic analysis of block level storage devices for detecting cybersecurity attacks is presented. The method includes accessing a disk in a computing environment, the disk including deleted data; recovering at least a file from the deleted data; initiating a forensic analysis on the at least a file to detect a forensic artifact, wherein the forensic artifact indicates a cybersecurity attack; detecting the forensic artifact on the on the at least a file; and initiating a remediation action on a virtualization associated with the disk based on the detected forensic artifact.

The invention provides a fault recovery method and device, a medium and a product. The fault recovery method of the cluster file system comprises the following steps: acquiring all redo logs of a failed disk pack in the cluster file system after a newest check point; grouping all redo logs of the disk pack according to file granularity; combining the redo logs in the same group to obtain a combined redo operation of the file; and performing parallel playback on all the merging and redoing operations of the disk pack. Concurrent processing of the redo logs can be achieved, and the multi-core characteristic of hardware and the high throughput of a solid state disk are fully utilized. The recovery efficiency of the disk pack is effectively improved, so that the time that service cannot be provided for the outside due to fault recovery is shortened, and the availability of the cluster file system is greatly improved.

The invention relates to an air outflow device (1) having a cam drive (10) with a drive element (14) which can be pivoted by means of a drive motor, the drive element, when pivoted in a first pivot direction (21) in a first pivot angle section, deflects the disks (4) of the first disk group of the air outflow device (1) by means of the first coupling element (11) and, when further pivoted in the first pivot direction (21) in a subsequent second pivot angle section, pivots the disks (4) back again. The drive element (14) deflects the discs (5) of the second disc group in a third pivot angle section during a reverse pivot in the second pivot direction (25) and pivots the discs back when the drive element (14) further pivots in the second pivot direction (25) via a fourth pivot angle section.

This magnetic recording device includes: a plurality of magnetic disks including a substrate having a thickness of 0.51 mm or less and a magnetic recording layer formed on the substrate; and a spacer disposed between the plurality of magnetic disks and serving for stacking the magnetic disks at predetermined intervals. The substrate and the spacer satisfy: [CTE(sub)∙E(spa)] / [CTE(spa)∙E(sub)] < 1.0 … (1) (In the formula, CTE(sub) is the coefficient of thermal expansion (×10-7 / K) of the substrate at 100°C to 300°C, CTE(spa) is the coefficient of thermal expansion (×10-7 / K) of the spacer at 100°C to 300°C, E(sub) is the Young's modulus (GPa) of the substrate, and E(spa) is the Young's modulus (GPa) of the spacer.

This magnetic recording device comprises: a plurality of magnetic disks including a substrate and a magnetic recording layer formed on the substrate; and a spacer, which is disposed between the plurality of magnetic disks, for stacking the magnetic disks at predetermined intervals, wherein the amount of change in the flatness of the magnetic disk following the thermal shock test described below is 5.0 μm or less. <Thermal shock test> A temperature raising / lowering program, in which a magnetic recording device is maintained at 70°C for 30 minutes, then cooled to -40°C for 2 minutes and maintained at -40°C for 30 minutes, and then heated to 70°C for 2 minutes, is repeated five cycles in a thermal shock device.

The application relates to an HDFS-based data migration method and device, electronic equipment and a storage medium, in particular to the technical field of data processing. The application comprises the following steps: acquiring the capacity and usage of disks on a data node; the disks comprise a source disk to be unloaded and other disks; setting the volume data density of the source disk to a preset value, calculating the volume data density of the other disks; according to the volume data density of the other disks, migrating the data of the source disk to the other disks, and balancing the data among the other disks, so as to maintain the data balance state of the data node after the source disk is unloaded. The embodiment of the application can clean up the data of the source disk completely, supports safe unloading of the source disk, and balances the data among the other disks through the volume data density, so that the data on each disk of the data node is uniformly distributed, and the stability of data reading and writing after the source disk is unloaded is maintained.