7 results about "Write strategy" patented technology

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 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.

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.