5 results about "Disk array controller" patented technology

The invention provides a distributed storage collaborative optimization method and device, electronic equipment and a storage medium, and relates to the technical field of computer storage. Mapping the virtual disk into a logical volume of the distributed storage system, constructing dual redundancy protection by adopting a multi-replica redundancy strategy based on the logical volume, and when a single physical hard disk in the virtual disk generates a slow disk or a fault, initiating and executing a data reconstruction operation in the storage node by a disk array controller. The problems that in the prior art, due to the fact that traditional distributed storage depends on a multi-copy redundancy mechanism, large-scale data reconstruction is triggered by single-disk faults, disk I / O pressure is dramatically increased, operation and maintenance complexity is high, performance and reliability are contradictory, and fault processing efficiency is low due to immature collaborative optimization of hardware RAID and distributed storage can be solved.

Provided is a redundant array of inexpensive disks (RAID) controller including a plurality of channel interfaces configured to receive a data strip for which it is distinguished in which data stripe the data strip is included by using a RAID identifier from each of a plurality of channels, split the data strip into a plurality of pieces of split data and store the split data, and assign a split identifier to each of the plurality of pieces of split data, a distributor configured to set, based on the split identifier, a transmission path of the plurality of pieces of split data, and a plurality of RAID buffer units configured to receive the split data through the distributor and manage parity data corresponding to the split data.

Embodiments of the present application provide a disk access method and device, electronic equipment and storage medium, which obtain processor information of a host and input / output queue attribute information supported by a disk array controller; create an input / output command queue according to the processor information and the input / output queue attribute information; in response to an input / output command issued by an upper-layer application on the host side, generate a read / write command and determine an input / output command queue corresponding to the input / output command; and then send the read / write command to the disk array controller side through the input / output command queue corresponding to the input / output command to perform disk access, so that the command queue is created according to the performance attribute characteristics of different hard disk media, and the command queue is dynamically selected after the input / output command is issued by the upper-layer application, the overall response speed and data processing efficiency of the system are improved, and the waste of system resources and the negative impact of low-speed SATA disks on the overall system performance are reduced.

This application provides a method, apparatus, electronic device, and storage medium for distributed storage collaborative optimization, relating to the field of computer storage technology. It utilizes a disk array controller to configure multiple physical hard drives within a storage node as virtual disks, then maps these virtual disks to logical volumes of a distributed storage system. Based on these logical volumes, a multi-replica redundancy strategy is employed to construct dual redundancy protection. When a single physical hard drive in the virtual disk experiences a slow disk or fails, the disk array controller initiates and executes a data reconstruction operation within the storage node. Therefore, it can solve problems in existing technologies such as large-scale data reconstruction triggered by single-disk failures due to the reliance on multi-replica redundancy mechanisms in traditional distributed storage, a surge in disk I / O pressure, high operational complexity, a contradiction between performance and reliability, and low fault handling efficiency caused by the immaturity of hardware RAID and distributed storage collaborative optimization.

The present application relates to a hash table reconstruction method, apparatus, computer equipment, and medium. The method is applied to a disk array controller connected to a host computer and including a cache. The method comprises: reading cache status data from a pre-built hash table when the disk array controller is restarted after a power outage; when the status data indicates that the cache is locked and cache operations have not been completed, resetting the status data to reconstruct the hash table to obtain a new hash table; and responding to input and output commands from the host computer based on the new hash table. This method enables rapid response to the host computer even when the disk array controller is restarted after an abnormal power outage.