Patent application number | Description | Published |
20080270699 | System for controlling spinning of disk - A system for controlling spinning of a disk is provided to prevent deterioration of the access response speed and to suppress the power consumption. The system includes a controller controlling a file system, and a disk array system storing data of the file system. The disk array system includes a plurality of logical volumes, each of which is configured by at least one disk device, and a disk controller controlling data input/output to/from the plurality of logical volumes. The plurality of logical volumes includes at least one first type logical volume which is controlled so that spinning of a disk device that configures the logical volume can be stopped, and at least one second type logical volume which is controlled so that spinning of a disk device that configures the logical volume cannot be stopped. Data satisfying a predetermined condition is stored in the second type logical volume. | 10-30-2008 |
20090094246 | FILE SYSTEM ACCESS CONTROL APPARATUS, FILE SYSTEM ACCESS CONTROL METHOD AND RECORDING MEDIUM INCLUDING FILE SYSTEM ACCESS CONTROL PROGRAM - A file system access control which carries WORM commitment for files in a single transaction is provided. The file system access control apparatus includes command files that support WORM commitment, interprets WORM commitment command which is registered in command files by means of a daemon process module and executes WORM commitment in a file. A plurality of files and those under management of directories are changed of the file access modes to meet WORM. In addition, a system that allows WRITE command for the command files by means of a standard interface of the file system. The results of WORM commitment is registered in the repository files under the system regarding the present invention. | 04-09-2009 |
20090144290 | NETWORK STORAGE SYSTEM WITH A CLUSTERED CONFIGURATION SHARING A NAMESPACE, AND CONTROL METHOD THEREFOR - Provided is a storage system as follows. A server holds a management table that serves to manage a mount point of a file system. The management table stores a file system identifier that uniquely identifies the file system within the storage system, mount point information that indicates the mount point of the file system, and a management server identifier that indicates an identifier of the server that manages the file system. The contents stored in the management table of each server are the same. Upon reception of a request to obtain a file handle, each server returns the file handle requested to be obtained. The file handle indicates, uniquely within the storage system, the storage area on the disk subsystem in which the file relating to the request is stored. | 06-04-2009 |
20100023716 | STORAGE CONTROLLER AND STORAGE CONTROL METHOD - Difference information between two snapshots from a first point-in-time snapshot, which has been copied, to an N | 01-28-2010 |
20100122332 | FILE SERVER FOR TRANSLATING USER IDENTIFIER - A file server including: a first interface coupled to a client computer which manages a client side user identifier used by the client computer to identify a client computer user; a second interface coupled to a first storage storing first file system data and a first file system side user identifier used by the first file system to identify the client computer user, and a second storage storing second file system data and a second file system side user identifier used by the second file system to identify the client computer user; a processor which receives a client computer's first access request to the first file system, obtains a first file system identifier which identifies the first file system and the first file system side user identifier, and translates the first file system side user identifier to a first client side user identifier using the first file system identifier. | 05-13-2010 |
20110137863 | STORAGE SYSTEM, NAS SERVER AND SNAPSHOT ACQUISITION METHOD - A storage system including: a storage device for storing a file; a plurality of file systems for managing the file; and a plurality of NAS servers that control access from a client to the file systems via a global namespace formed by grouping local namespaces for the one or more file systems; wherein, each NAS server includes a memory to store global namespace management information including global paths of the file systems; one NAS server of the NAS servers accepts a request to obtain snapshots of the file systems from external of the storage system; the one NAS server instructs itself and the other NAS servers to obtain snapshots of the file systems; the one NAS server and the other NAS servers obtain the snapshots of the file systems, and inform the one NAS server of snapshot identifiers and of local paths of the snapshots; the one NAS server makes snapshot management information including global paths of the snapshots based on each of the snapshot identifiers received from the other NAS servers and each of the global paths of file systems corresponding to the snapshots, included in the namespace management information so that both the global paths of the file systems and the global paths of the snapshots are configured on the same global namespace simultaneously, with a directory configuration of the snapshots being same in configuration layout as a directory configuration of the file systems; and the one NAS server informs the other NAS servers of the snapshot management information. | 06-09-2011 |
20120143822 | STORAGE SYSTEM, NAS SERVER AND SNAPSHOT ACQUISITION METHOD - A storage where one NAS server makes snapshot management information including global paths of snapshots based on snapshot identifiers and global paths of file systems corresponding to the snapshots, so that global paths of both the file systems and snapshots are configured on the same global namespace simultaneously, with a directory configuration of the snapshots being the same in configuration layout as a directory configuration of the file systems; the one NAS server informs other NAS servers of the snapshot management information; memory in each of the NAS servers stores the snapshot management information; the snapshot management information includes the snapshot identifier, local path and global path for each of snapshots obtained by each NAS server at each point in time; and the computer obtains the snapshot management information from at least one of the NAS servers and displays at least a part of the snapshot management information. | 06-07-2012 |
20120311284 | STORAGE CONTROLLER AND STORAGE CONTROL METHOD - Difference information between two snapshots from a first point-in-time snapshot, which has been copied, to an N.sup.th point-in-time snapshot, which constitutes the latest point-in-time snapshot, is acquired to a memory module. The memory module stores two or more pieces of difference information. The two or more pieces of difference information comprise difference information that shows the difference between a first point-in-time snapshot and any snapshot other than the first point-in-time snapshot of N snapshots. Copy difference information, which is information that shows the difference between the first point-in-time snapshot and a specified snapshot from among N snapshots, and which is used in copying the specified snapshot, is created on the basis of the two or more pieces of difference information. | 12-06-2012 |
20130318318 | STORAGE CONTROLLER AND STORAGE CONTROL METHOD - Difference information between two snapshots from a first point-in-time snapshot, which has been copied, to an N.sup.th point-in-time snapshot, which constitutes the latest point-in-time snapshot, is acquired to a memory module. The memory module stores two or more pieces of difference information. The two or more pieces of difference information comprise difference information that shows the difference between a first point-in-time snapshot and any snapshot other than the first point-in-time snapshot of N snapshots. Copy difference information, which is information that shows the difference between the first point-in-time snapshot and a specified snapshot from among N snapshots, and which is used in copying the specified snapshot, is created on the basis of the two or more pieces of difference information. | 11-28-2013 |