12 results about "Write strategy" patented technology

This application discloses a storage system, a data processing method, an apparatus, a node, and a storage medium, and pertains to the field of data storage technologies. In the method, a client determines an address that is in a storage unit and that is used to store to-be-written data, and sends the to-be-written data to a first storage device that is in a storage node and that is corresponding to the storage unit, so that the first storage device stores the to-be-written data while a CPU of the storage node does not need to determine a hard disk LBA corresponding to virtual address space, and a hard disk does not need to determine a corresponding physical address based on the hard disk LBA.

The present application discloses a metadata management method, apparatus, device, medium and product. By determining the write priority of metadata nodes based on the cache space utilization rate and node hit rate, metadata nodes that occupy a large cache space and have a low utilization rate are written, data that is not frequently accessed is written to the disk in a timely manner, and data that is more frequently accessed is retained in the cache. This reasonable write strategy avoids excessive occupation of the cache space. The metadata nodes to be written are aggregated and then written to the disk instead of writing each node separately, so that multiple small I / O operations can be combined into fewer large I / O operations. Reducing the number of I / O operations can effectively reduce the burden on the disk, improve the disk write efficiency, and reduce disk write amplification.

The invention relates to a multi-device data storage method and a storage device. The method comprises the steps of determining a power supply state according to the stability of a power supply curve, triggering a breakpoint continuous writing mechanism when the power supply state is judged to be an unstable state, starting a cache structure when the power supply state is judged to be a stable state, and calling a difference comparison algorithm when it is detected that multiple devices access the same target file, comparing the current version and the historical version of the target file block by block, extracting differential data blocks, selecting a storage strategy according to the file type of the target file after multi-device access processing is completed, adopting a segmented streaming write-in strategy when the target file is a video file, and adopting a segmented streaming write-in strategy when the target file is a drawing file. And establishing a redundant index and recording key node positions in the target file, and when the target file is a document file, executing a lightweight encryption algorithm and generating an access log. The method has the advantage that the data storage and synchronization efficiency is improved.

The embodiment of the present application provides a hard disk reading and writing method and device, storage medium and electronic equipment, which relates to the field of computers. The hard disk reading and writing method includes: obtaining the decibel value of the noise generated when the fan is working and detected by the noise sensor, and obtaining the Hertz value of the vibration caused when the fan is working and detected by the vibration sensor, wherein the noise sensor and the vibration sensor are located in the fan frame of the server; determining the degree of influence of the noise and the vibration on the performance of the hard disk in the server according to the obtained decibel value and the Hertz value, and obtaining the target influence degree; when the target influence degree is greater than or equal to the preset influence degree, changing the read and write strategy of the hard disk according to the target influence degree. The above solution solves the problem that the hard disk read and write strategy in the server is fixed, resulting in the easy loss of read and write data when the hard disk performance is poor.

The invention relates to the technical field of data storage, and discloses a performance improvement method for all-flash memory, which comprises the following steps: optimizing a data storage structure; optimizing the controller and firmware, including updating the firmware of the storage controller; improving the degree of parallelism, including increasing the parallelism of a flash memory channel and a chip, and supporting an NVMe protocol to optimize a writing strategy, including writing combination and reduction of writing amplification; intelligent maintenance including intelligent monitoring and self-repairing; load balancing and optimal scheduling are carried out; according to the invention, through intelligent maintenance, the performance of the system under a high-load condition is obviously improved; through intelligent maintenance, the system can detect and process potential bad blocks in the flash memory storage unit in real time, and the occurrence rate of the bad blocks is reduced; through intelligent maintenance, various performance indexes can be monitored in real time in the operation process of the storage system, and automatic repair and optimization measures are triggered according to a preset health state; and through intelligent maintenance, the self-repairing capability of the system is improved, and the frequency of manual intervention is reduced.

The invention relates to the field of solid-state memory detection, and particularly discloses a solid-state disk aging test method and system based on a dynamic read-write strategy, which accurately polls core health indexes such as original bit error rate and ECC error correction strength in a solid-state disk in real time through a special instruction, thereby breaking through the technical barrier that the internal state cannot be perceived, and improving the detection accuracy of the solid-state disk. And the internal indexes are actively driven and stabilized near a preset risk warning line. In order to solve the technical problem that deviation calculation is one-sided and slow in an existing dynamic strategy, a risk potential energy deviation calculation method is applied to further integrate quantitative evaluation of physical relevance among indexes and consideration of index deterioration speed on the basis of calculation of basic deviation, so that the risk potential energy deviation is calculated. Therefore, a pressure signal capable of prospectively reflecting the comprehensive failure risk is synthesized. The test system dynamically adjusts the IO load by using the intelligent signal to ensure that the most fragile reliability link of the solid state disk can be continuously pressed in the most efficient and most accurate manner.

The invention discloses a Weak Page protection method and device based on NAND storage, equipment and a medium, and relates to the technical field of solid state disks, and the method comprises the following steps: when data is written into a physical block of NAND storage equipment, dynamically deciding whether to start a weak page protection strategy for the physical block based on the current state of the NAND storage equipment, and recording a writing strategy of the physical block; if the weak page protection strategy is started, querying a preset weak page bitmap in a data writing process, writing a non-weak page by adopting a first data storage mode and a first ECC protection intensity, and writing a weak page by adopting a second data storage mode and a second ECC protection intensity; and in a data reading process, determining a data storage mode and ECC protection strength corresponding to the physical page according to the write-in strategy and the weak page bitmap, and performing data reading by adopting a corresponding ECC decoding strategy. According to the method, uncorrectable errors of the weak page in the data storage process can be effectively avoided, and the overall data integrity of equipment is ensured.

The application discloses a method and system for improving RAID1 write performance under a Linux system, and the method comprises the following steps: when a main IO request sent by an upper layer enters a RAID1 disk array, mirroring the main IO request into a corresponding number of sub IO requests and delivering the sub IO requests to each disk, initially marking the completion state of the sub IO requests as an uncompleted state, and initially marking the notification state of the main IO request as an uncompleted notification state; when each disk executes the corresponding sub IO request and the execution is completed, marking the completion state of the sub IO request of the current disk as a completed state, and notifying the RAID1 disk array of the completion of the main IO request in advance. The application aims to solve the problem that the synchronous write strategy adopted by the RAID1 write mechanism of the Linux kernel causes the IO burr problems to be superimposed and amplified in the RAID1 all-flash array, and improve the write performance of the RAID1 all-flash array.

Embodiments of the present application provide a multi-modal data writing method, a multi-modal data recall method, an apparatus and a device. The method comprises: based on an agent scheduling layer, in response to a writing request, and according to the memory content in the writing request, determining at least one heterogeneous storage module from a back-end module layer; based on the agent scheduling layer, generating a writing task for each heterogeneous storage module; based on a writing interface layer, executing each writing task according to the writing strategy of each writing task, to asynchronously write multi-modal data in the memory content to at least one heterogeneous storage module. The method can improve data integration efficiency and realize unified storage and efficient management of multi-modal data.

According to the efficient offline googlekey burning tool scheme, an offline security package is automatically read after an external storage medium is accessed, and integrity verification and signature verification are carried out on a list, an encrypted load and a signature; the method comprises the following steps: deriving a deblocking key based on hardware unique information in a trusted environment, carrying out equipment binding deblocking and matching control on a key material, obtaining and verifying platform capability proof, selecting a writing strategy in combination with a list strategy and carrying out pre-detection, if an Attention ID condition is not met, writing an identifier firstly, and if the Attention ID condition is not met, carrying out equipment binding deblocking and matching control on the key material; calling a hardware abstraction layer through inter-process communication to write the key into a secure storage domain, generating a write abstract and performing consistency verification; by post-writing the non-playback record, generating the consumption receipt, writing back the medium, marking that the security package is consumed and recording the progress after successful writing back, off-line burning can be automatically completed by inserting the medium, the field efficiency is remarkably improved, and manual misoperation is reduced.

A write management method of an NAND type solid state storage device dynamically generates a write prohibition condition and controls a write operation by establishing a write context record, monitoring a write consequence and performing a responsibility attribution analysis. Before each time of data writing, a context record containing a writing strategy, an NAND block state and a data attribute is established; after data writing is completed, ECC correction events, retention errors, and unintended rewrite or read failure events of the NAND block are monitored during background observation. When the monitoring result exceeds a preset allowable range, the context record is traced back, the failure possibility of the combination of the specific writing strategy and the block state is judged, and a corresponding writing forbidding condition is established. According to the method, the accumulated failure frequency of a single writing strategy or a single NAND block is calculated, strategy or block level limitation is established, and the strategy and the block limitation are dynamically updated according to an observation period, so that the SSD can still effectively reduce the high-risk event occurrence rate at different loads and aging stages, the data reliability is improved, and the service life of the NAND block is prolonged.

The invention discloses a storage control method and device, electronic equipment and a nonvolatile storage medium, and relates to the technical field of storage. Storage reliability requirement parameters of to-be-written data are determined, and according to a first model of storage reliability and storage redundancy and the storage reliability requirement parameters, the to-be-written data are obtained; the method comprises the steps of determining a first range of redundancy parameters required by to-be-written data, determining a redundancy coding mode of the to-be-written data and a target writing position in a storage system according to operation state parameters of the storage system and the first range, controlling writing according to the redundancy coding mode, and performing state monitoring and intelligent decision making through the storage system. According to the method, dynamic adjustment of coding, verification and writing strategies is realized, the variability of the storage medium is adapted, and compared with a storage system adopting a fixed redundancy strategy in the related technology, the writing performance can be improved, the overall throughput of the storage equipment can be improved, and the storage requirements of storage data with different reliability requirements can be met.