| Patent application number | Description | Published |
|---|
| 20100049754 | STORAGE SYSTEM AND DATA MANAGEMENT METHOD - In a NAS apparatus, a processor reads in, from a data volume, metadata of all files included in a file system at a base point-in-time of a snapshot of the data volume, and writes all the read-in metadata to an area of a difference data storage volume (difference volume), and in a storage apparatus, a difference data save processing unit, upon receiving a block write request from the latest base point-in-time to the subsequent base point-in-time, chronologically writes data stored in a block specified by the block write request to an area subsequent to the difference data storage volume area. | 02-25-2010 |
| 20100250626 | STORAGE APPARATUS AND ITS FILE CONTROL METHOD AND STORAGE SYSTEM - Decrease in the write speed is prevented even when overwriting the entire file. When a NAS apparatus receives a file size change request from a computer as an access request source for changing the size of a file, the NAS apparatus creates a new file related to the file in a file system with a processing performance that is higher than a file system containing the file as an entity of that file, associates the new file and the foregoing file, deletes the file on the condition that the new file and the file has been associated, and executes data write processing of writing data into the new file on the condition of subsequently receiving a data write request from the access request source for writing data into the file. | 09-30-2010 |
| 20100299306 | STORAGE SYSTEM HAVING FILE CHANGE NOTIFICATION INTERFACE - The present invention provides a file operation notifying program for detecting a file operation of an application in a virtual file server on a server machine, and notifying the file operation to an application on another virtual file server inside the server machine, and to an application external to the server machine based on a notification management table. | 11-25-2010 |
| 20110035409 | HIERARCHICAL STORAGE SYSTEM AND COPY CONTROL METHOD OF FILE FOR HIERARCHICAL STORAGE SYSTEM - An interface for controlling an inhibition of a recall is prepared for an application, and a judgment of necessity of a recall is informed of to a hierarchical storage before the application executes an access to a file. | 02-10-2011 |
| 20110040729 | HIERARCHICAL MANAGEMENT STORAGE SYSTEM AND STORAGE SYSTEM OPERATING METHOD - The storage system eliminates inconsistency between a stub, and a file data storage location indicated by the stub. In a storage system that executes HSM using stubs, information relating to a higher tier, which is a data migration source, is recorded during data migration. The stub in the higher tier is correctly restored using the higher-tier information thus recorded. The stub is restored, and inconsistency between information in the HSM layers is resolved. | 02-17-2011 |
| 20110066666 | FILE MANAGEMENT METHOD AND STORAGE SYSTEM - Files stored in a storage system are grouped in a metadata server, and storage servers discretely storing these files are instructed to detect file duplication and to remove duplicate data. The storage servers detect duplicate data by comparing file fragments stored by the storage servers themselves with each other. In a case where duplicate data is detected, the storage servers delete the duplicate data. | 03-17-2011 |
| 20110078112 | METHOD AND SYSTEM FOR TRANSFERRING DUPLICATE FILES IN HIERARCHICAL STORAGE MANAGEMENT SYSTEM - In order to provide HSM that can effectively use the storage capacity of an upper Tier in an HSM system, a lower Tier of the HSM system detects a group of files having the same data content from a plurality of files stored in the lower Tier, and keeps at least one of the real data of the group of files having the same data content while deleting the rest of the data. The upper Tier receives the process result from the lower Tier. Then, in response to a read request from the host computer that specifies a file included in the group of files and transferred to the upper Tier from the lower Tier, the upper Tier identifies the at least one of the data that is kept and corresponding to the specified file, and responds to the host computer. | 03-31-2011 |
| 20110191305 | STORAGE SYSTEM FOR ELIMINATING DUPLICATED DATA - A storage system | 08-04-2011 |
| 20110191306 | COMPUTER, ITS PROCESSING METHOD, AND COMPUTER SYSTEM - When a deletion request to delete a file system is made and a retention period of the file system to be deleted has not expired, the retention period end date and time is displayed at high speed. | 08-04-2011 |
| 20110231458 | FILE LEVEL HIERARCHICAL STORAGE MANAGEMENT SYSTEM, METHOD, AND APPARATUS - Time required for a file server to determine files to be migrated from a first storage region to a second storage region is reduced. A file service system coupled to the storage system for providing a first storage region and a second storage region stores identifiers of files that have been accessed by a client, in accessed file identifier information and determines the files to be migrated from the first storage region to the second storage region based on metadata of the files stored in the first storage region and the accessed file identifier information. | 09-22-2011 |
| 20110295968 | DATA PROCESSING METHOD AND COMPUTER SYSTEM - A technique for increasing the speed of data entry into a distributed processing platform is provided. According to a computer system of the present invention, when data is entered into each node in a distributed manner, the most efficient entry method (a method with the highest processing speed) is selected from among a plurality of entry methods, so that the data is entered into each node with no overlaps in accordance with the selected method. | 12-01-2011 |
| 20120016854 | FILE-SHARING SYSTEM AND METHOD FOR MANAGING FILES, AND PROGRAM - A file, for which writing has been reserved, in a file-sharing system can be efficiently read. A check-in file agent is provided in a computer that executes check-in of a file as the file-write reserving processing, a file manager is provided in a file-sharing computer, and a check-out file agent is provided in a computer that executes check-out of a file as the file reading processing. Upon request for check-in of a file, the check-in file agent divides the file into divided files and generates metadata that indicates the order of division of the file, and transmits them to the file-sharing computer for storage therein. Upon request for check-out of the file, the check-out file agent receives the metadata from the file-sharing computer, and based on the metadata, sequentially receives the divided files to generate a file to be checked out. | 01-19-2012 |
