Abstract: A distributed storage device includes a control unit and a plurality of storage units. The control unit has a network interface, to receive a work instruction sent by at least one user end via a network. Each storage unit supports a non-volatile memory host controller interface (NVMHCI) specification and includes at least one non-volatile memory and a storage controller. The storage controller is capable of performing an operation on the at least one non-volatile memory according to the work instruction, to share operation resources of the control unit. The operation may be thin provisioning that establishes a physical volume and a logical volume for the storage unit.

Abstract: A data storage system and a data storage method thereof are provided. The data storage system includes a first server and a second server. The first server is connected to a transmission line, and the first server includes a first data pool and a first controller. The first controller is configured to operate in an active mode. In the active mode, the first controller receives to-be-stored data from a client, stores the to-be-stored data in the first data pool, and sends first storage data through the transmission line. The second server is connected to the first server, and the second server includes a second data pool and a second controller. The second controller is configured to operate in the active mode. In the active mode, the second controller receives the to-be-stored data through the transmission line, and the second controller stores the to-be-stored data in the second data pool.

Abstract: A method and an electronic device for executing data reading/writing in volume migration are provided. The method includes: preventing a read/write action on a first volume; switching an execution object of the read/write action to a brand new second volume; releasing the read/write action so that the read/write action is executed on the second volume; and migrating data in the first volume to the second volume, and during migration, if the second volume already has data, skipping migrating content at a corresponding address in the first volume to the second volume.

Abstract: A data storage system having data locking and unlocking functions and a method therefor are provided. The data locking and unlocking method includes: when a used capacity of a storage device is equal to or greater than a first threshold, locking a plurality of folders of the foregoing storage device; preventing the folders from being unlocked when the used capacity is greater than or equal to a second threshold; unlocking the locked folders according to a first unlock signal when the used capacity is less than the first threshold; and unlocking the locked folders according to a second unlock signal when the used capacity is between the first threshold and the second threshold. The foregoing second threshold is greater than the first threshold.

Abstract: A data compression method based on sampling and estimation is provided. The method includes: receiving a piece of data; extracting N data regions from M data regions of the piece of data; examining a data redundancy ratio in the N data regions; and determining, according to a value of the data redundancy ratio, whether to compress the piece of data.

Abstract: A redundant disk array system and a data storage method thereof are provided. The redundant disk array system includes a plurality of disks, a plurality of data stripes, and a processing unit. The processing unit stores, in a log manner into a write page, first logic page numbers corresponding to the pieces of write data, and records write locations of the first logic page numbers; the processing unit performs garbage collection on invalid page numbers of the first logic page numbers; and after executing garbage collection, the processing unit writes, in a log manner, second logic page numbers corresponding to the pieces of write data into the write pages traversed by a data stripe of the data stripes that has the most invalid page numbers, and records write locations of the second logic page numbers.

Abstract: The invention provides a data accessing system and a method for the same. The data accessing system comprises a data access unit and a data storage unit. When the data access unit is configured to access a plurality of data with continuous or discrete addresses, it issues a plurality of request instructions. The request instructions are encapsulated into a special instruction by an encapsulation module, and transmitted to the data storage unit by a data transmission interface. The data storage unit obtains the plurality of request instructions by using a de-encapsulation module to de-encapsulate the special request instruction, and executes the plurality of request instructions to access the plurality of data, so as to enhance the efficiency of data access.

Abstract: The present invention provides a data storage system and method. A controller is connected to a plurality of disk arrays, and each disk array is provided with a data protection unit for data protection. When one disk drive of one of the disk arrays is damaged, this disk array is defined as a damaged disk array, while other disk arrays without disk drives being damaged are defined as at least one normal disk array. The controller stops to write a new written data into the damaged disk array, while write the new written data into the normal disk arrays. The new written data will be protected by the data protection units of the normal disk arrays. Thereby, continuous data protection for the new written data by the data protection units together with preservation of storage performance of the system, after the disk drive is damaged, may be achieved.

Abstract: A data storage method and a system thereof are disclosed. The data storage method includes allocating a first logical block and a second logical block, which are mapped to a physical block; the first logical block includes consecutive first logical pages, used to store logical addresses, and the second logical block includes consecutive second logical pages; on executing garbage collection, sequentially and consecutively storing valid logical addresses in second logical pages in the order of the second logical pages according to valid bits; and establishing a one-to-one second mapping relationship between the second logical pages and valid data pages according to the first mapping relationship.