10 results about "Disk pack" patented technology

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.

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 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).

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.

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.