| Patent application number | Description | Published |
|---|
| 20080222374 | Computer system, management computer, storage system and volume management method - To provide a computer system in which the primary site administrator for managing all the sites can make the configuration of the authority to be granted beforehand for the administrator of each site to fill in for a part of its own authority, even during the absence such as at the time of disaster. The computer system includes one or more storage systems | 09-11-2008 |
| 20080229131 | Storage System and Management Information Acquisition Method for Power Saving - The object of the invention is to control the power consumption in a storage subsystem. In a storage system, when a monitor in a host computer acquires information concerning a storage region to manage the storage region, a monitor in the host computer checks whether or not the power supply state in the storage region is ‘on’ based on a storage region information that stores first information indicating whether or not the power supply state in the storage region is ‘on’ and second information concerning the storage region, and acquires the second information from the storage region information table if the power supply state in the storage region is not ‘on’. | 09-18-2008 |
| 20080260159 | Computer system, storage system, and data management method for updating encryption key - A computer system encrypts write-data to be written to the volume in response to a write command. The system transmits a rekey command from host computer system to the storage system when the key data stored in the host key data memory is changed to second key data. The storage system receives the rekey command transmitted from host computer system and stores the first and second key data contained in the received rekey command to a volume key data memory of the storage system. The storage system reads out data encrypted with the first key data from an original block address in the volume. The storage system decrypts the data read out from the volume using the first key data. The storage system encrypts the data decrypted by the first key data using the second key data, and writs the data encrypted with the second key data to the original block address. | 10-23-2008 |
| 20080263368 | COMPUTER SYSTEM, MANAGEMENT TERMINAL, STORAGE SYSTEM AND ENCRYPTION MANAGEMENT METHOD - To provide a computer system in which an encryption-decryption process performed by one encryption-decryption module can be moved to the other encryption-decryption module without stopping the process for a read/write request from a host computer. The computer system has a host computer | 10-23-2008 |
| 20080266698 | STORAGE APPARATUS AND POWER-SAVING CONTROL METHOD OF STORAGE APPARATUS - Access to the physical disks is differentiated as access from a host computer, and access based on processing (data migration processing, copy processing) for storage management. Whether to switch the state of the physical disks from a normal power consumption mode to a power saving mode is determined according to the access from the host computer after the access based on processing for storage management is complete, and the state of the physical disks are switched from the normal power consumption mode to the power saving mode based on the determination result. | 10-30-2008 |
| 20080270696 | VOLUME ASSIGNMENT MANAGEMENT DEVICE - The present invention is a management computer that determines, as the assignment source of a logical volume that is assigned in order to store predetermined data, a storage area of a RAID group including one or more disk drives among a plurality of disk drives provided in a storage system; and the CPU that executes the volume assignment module accepts a logical volume assignment request and, in cases where a logical volume assignment request is accepted, determines the RAID group which is the assignment source of the logical volume on the basis of the access trend assumed for the logical volume which is the subject of the assignment request. | 10-30-2008 |
| 20080307271 | COMPUTER SYSTEM OR PERFORMANCE MANAGEMENT METHOD OF COMPUTER SYSTEM - This invention provides a system including a computer and a storage-subsystem comprising at least either a first storage area for storing data sent from the computer or a second storage area to be associated with the first storage area, for storing replicated data of data stored in the first storage area. This system includes a replication processing status referral unit for referring to a replication processing status of data of the first storage area and the second storage area to be associated, and an output unit for outputting first performance information concerning data I/O stored in the first storage area, and outputting second performance information concerning data I/O stored in the second storage area together with the first performance information when the replicated data is being subject to replication processing from the first storage area to the second storage area as a result of referring to the replication processing status. | 12-11-2008 |
| 20090060195 | Storage apparatus and data managament method - Provided is a storage system that includes a first storage apparatus and a second storage apparatus each connected to a host computer. The first and second storage apparatuses each include a controller and a disk drive. The controller manages an encryption status and an encryption key for each of a data volume and a journal volume in the disk drive. The controller in the first storage apparatus receives a write request from the host computer, creates a journal based on write data, encrypts the journal, and stores in an order the journal in a storage area in the journal volume. The controller in the order the encrypted journal stored in the journal volume, decrypts the journal, and transmits the decrypted journal to the second storage apparatus. | 03-05-2009 |
| 20090094426 | STORAGE SYSTEM - An object of the present invention is to reduce the required volume capacity and journal control resources by sharing the journal volumes of an asynchronous copy function and a CDP function. | 04-09-2009 |
| 20090164780 | VOLUME MANAGEMENT METHOD IN A STORAGE APPARATUS HAVING ENCRYPTION FEATURE - The invention provides a computer system including a storage apparatus having an encryption feature, a management computer for running a management program for managing the storage apparatus, and an application host computer, wherein when allocating a logical volume or creating a copy pair, the management program selects, from the storage apparatus, a logical volume that satisfies a security level required by an application program that uses the logical volume to allocate the logical volume or create a copy pair. | 06-25-2009 |
| 20090172417 | KEY MANAGEMENT METHOD FOR REMOTE COPYING - A computer system comprising a host computer and a first storage system coupled to the host computer. The first storage system includes a first controller for controlling the first storage system, a first volume for storing data written by the host computer and a second volume for storing updated data when the data stored in the first volume is updated The first controller generates update information based on write data contained in the write request upon reception of a write request from the host computer, encrypts the write data based on an encrypted status of the data stored in the second volume and an encryption key for encrypting the data stored in the second volume and stores the generated update information and the encrypted write data in the second volume. | 07-02-2009 |
| 20090177895 | CONTROLLER FOR CONTROLLING LOGICAL VOLUME-RELATED SETTINGS - A controller carries out a first determination as to whether or not data to be stored in a target logical volume can be used by a plurality of access devices. The controller carries out a second determination as to whether or not the access devices comprise data encryption units respectively when the result of the first determination is affirmative. The controller controls a setting related to the target logical volume for one access device of the plurality of access devices, based on the result of the second determination. | 07-09-2009 |
| 20090327757 | Computer system for managing storage area state of a storage system - There is provided a computer system, having a host and at least one storage system. The at least one storage system provides storage area includes at least one of an encrypted storage area and a plaintext storage area The at least one storage system is configured to: receive an instruction about what type of storage area is available to the host computer; present the encrypted storage area to the host as an available storage area separate from unavailable storage areas in the case of the type of storage area being available according to the instruction indicating “encrypted”; and present, in the case of the type of storage area being available according to the instruction indicating other than “encrypted”, one of both the encrypted storage area and the plaintext storage area to the host computer as available storage areas, and only the plaintext storage area as an available storage area. | 12-31-2009 |
| 20100031058 | Computer System, Storage System and Management Computer for Backing Up and Restore Encryption Key for Storage System Incorporating Therein a Stored Data Encryption Function - To protect data from corruption due to restoration of an encryption key to a wrong storage system, there is provided a computer system including a first storage system and a second storage system, wherein: the first storage system, upon receiving a request to write first data to a first area in the first storage system, encrypts the first data by using a first key and writes the first data in the first area, and, upon receiving a request to write second data to a third area, encrypts the second data by using a second key and transmits a request to write the encrypted second data in a second area in the second storage system; and the computer system holds the first key, an identifier of the first storage system associated with the first key, the second key, and an identifier of the second storage system associated with the second key. | 02-04-2010 |
