| Patent application number | Description | Published |
|---|
| 20090077087 | ACCESS CONTROLLER THAT CONTROLS ACCESS TO FILES BY USING ACCESS CONTROL LIST - Each time the file access request is received, it is discriminated whether there is an ACL which corresponds with the file system of the type following the switching in the file designated by the file access request. In cases where the judgment result is that there is no such ACL, an ACL which corresponds with the file system of the type following the switching is generated on the basis of an ACL which corresponds with the file system of the type prior to the switching which is associated with the designated file, and the ACL thus generated is used to control access in accordance with the received file access request. | 03-19-2009 |
| 20090077201 | ROOT NODE FOR INTEGRATING NAS OF DIFFERENT USER NAME SPACES - A computer apparatus which integrates at least two or more services of user management domains has a processor, a memory and an interface. The processor receives an access request, specifies an access source domain, specifies an access target domain, and judges whether the specified access source domain matches the specified access target domain. If the access source domain is different from the access target domain, the processor extracts a user ID of the specified access source domain from the received access request, and refers to ID conversion information indicating correspondence of user IDs between the user management domains whose services are integrated to convert the extracted user ID of the access source domain into a user ID of the specified access target domain. Thus, loads of configuration at the time of service integration are reduced. | 03-19-2009 |
| 20090089413 | INTERMEDIATE NAS APPARATUS HAVING ACL INHERITANCE FUNCITON FOR NAMESPACE INTEGRATION - According to this invention, a computer system which provides a client node with a file system mounted into a virtual namespace, comprising: at least one file server which provides the file system; a root node which mounts the file system provided by the file server into the virtual namespace; and a network which couples the file server and the root node. The root node has an interface coupled to the network, a processor coupled to the interface, and a memory coupled to the processor. The root node is configured to: obtain access information set to a directory above a point in the virtual namespace at which the file system is to be mounted when mounting the file system into the virtual namespace; judge whether the obtained access information is to be inherited; and set, to the file system to be mounted, the obtained access information that is to be inherited. | 04-02-2009 |
| 20090248847 | STORAGE SYSTEM AND VOLUME MANAGING METHOD FOR STORAGE SYSTEM - A time and an amount of data for setting information which is necessary to execute an exclusion process which is necessary when data is stored in a cluster system are reduced. A storage system included in the cluster system includes a plurality of volumes, and a plurality of virtual servers utilizing at least one or more volumes of the plurality of volumes for a data processing, each of the plurality of virtual servers can access all the plurality of volumes, and the volume utilized by the plurality of virtual servers to process data corresponds to the virtual servers. | 10-01-2009 |
| 20090248870 | SERVER SYSTEM AND CONTROL METHOD FOR SAME - The server system includes a server apparatus transmitting and receiving file data based on an access request transmitted from a client apparatus; and a management apparatus managing the server apparatus, wherein the server apparatus includes a plurality of virtual server parts controlling transmission and reception of the data independently for each of the predetermined client apparatuses; a data flow configuration part configuring a data flow for each of the file data transmitted to and received by the virtual server parts based on a command from the management apparatus; and a load control part controlling a data flow for each of the file data to control load of the virtual server parts based on the data flow for each of the file data configured by the data flow configuration part. | 10-01-2009 |
| 20100095164 | FILE MANAGEMENT METHOD AND HIERARCHY MANAGEMENT FILE SYSTEM - There is provided a file management method of a hierarchy management file system capable of preventing an access performance from dropping when a user accesses to a file. According to the method, a server creates file systems in high-speed and low-speed volumes and a file-sharing server virtually integrates those file systems into one system as a pseudo file system. Then, the server moves a file to be moved to the file system created in the low-speed volume in advance, not when an access is made to the file. When a user accesses to the file after that, the user directly accesses to destination without requiring to copy the file, so that the accessing performance may be prevented from dropping. | 04-15-2010 |
| 20100205232 | File server, file management system and file relocation method - There is provided a file server which is capable of suppressing power consumption of a storage apparatus. When a file sharing program receives a file access from a client, the program makes reference to a mapping table. Then, the program addresses the access to the target file in the volume of a RAID group in which the target file is stored. A coupling-request reception program memorizes a coupling time for each user into a coupling history table. A grouping program applies a grouping to users whose coupling time-zones are similar to each other. A data transfer program transfers, into the same RAID group, data of the files associated with the grouped users, thereby collecting the data of the files into the same RAID group. On account of this, the time-zone during which no access is made to the RAID group (i.e., non-coupling time-zone) can be made longer. Accordingly, a spin-up/down request program makes a spin-down request to the RAID group in the non-coupling time-zone. | 08-12-2010 |
| 20100205370 | File server, file management system and file management method - When receiving a file access from the client, the file access program refers to the mapping table, and processes an access to files of on volumes of RAID groups. The file server analyzes the file access states, and groups the files depending on the access time period, defines the file migration pattern based on the grouping, migrates the files, and then carries out a power management operation like a spin-down/-up operation on the RAID groups based on the migration pattern. | 08-12-2010 |
| 20100211547 | File sharing system, file server, and method for managing files - In the HSM function, when supporting the file system snapshot function, a differential data volume is required for both a high-speed volume and a low-speed volume. Accordingly, when supporting the snapshot function by using a file system provided by the HSM function, a large amount of differential data volume is required. When the manager gives an instruction to acquire a snapshot, a snapshot management program executes snapshot acquisition processing to acquire a snapshot. In this processing, a snapshot reference relation building processing part copies a file storage location management table, and relates the file storage location management table to the acquired snapshot. Then, the snapshot reference relation building processing part checks a file that is migrated to a file system which does not have a differential data volume. Finally, the snapshot reference relation building processing part creates a link of the migrated file to the snapshot which is acquired previous time. | 08-19-2010 |
| 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 |
| 20100274825 | DATA MIGRATION SYSTEM AND DATA MIGRATION METHOD - When performing migration of data from a migration source file server which is not endowed with any HSM interface, to a migration destination file server which is endowed with HSM, a volume of high capacity is needed for the migration destination file server, and moreover the performance deteriorates directly after the migration. However, with this system, the manager is enabled to set a migration policy using attribute information which can be acquired through a standard file access interface possessed by a file server program, and, when setting the attribute information of the migration destination file, the tier of the file which is to be created is determined, and the migration destination file is created, on the basis of this attribute information and migration policy. | 10-28-2010 |
| 20100274826 | METHOD FOR CLIPPING MIGRATION CANDIDATE FILE IN HIERARCHICAL STORAGE MANAGEMENT SYSTEM - The system of the present invention curbs an unnecessary inter-tier file migration and provides an inter-tier file migration that conforms to the utilization state. The hierarchical storage management system respectively migrates a frequently accessed file to the upper Tier, and an infrequently accessed file to the lower Tier. This system carries out inter-tier file migration in conformance with the utilization state. This system provides functions for anchoring a Tier for storage for a specified file, and for not permitting an inter-tier file migration. | 10-28-2010 |
| 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 |
| 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 |
