Patent application number | Description | Published |
20080201527 | Data Processing System and Storage Subsystem Provided in Data Processing System - A first storage subsystem | 08-21-2008 |
20080215835 | Storage system and data processing system - A storage system comprises a data set storage region for storing a data set containing data and update information for managing this data, and a control section. The data set storage region is divided into a plurality of storage regions including a first storage region and a second storage region. The control section generates a first data set containing first data and first update data which is update data for same, stores at least the first data of this first data set in the first storage region, generates a second data set containing second data and second update data which is update data for same, and stores at least the second data of this second data set in the second storage region, which is separate from the first storage region. | 09-04-2008 |
20080313497 | Data processing system - A data processing system has a plurality of storage systems. In this system, data replication is performed at high speed and efficiency while maintaining data integrity. In addition, when failure has occurred in a configuration element, the time necessary to resume the data replication is reduced. In accordance with an instruction from first host computer, updating of replication-target data and creation of a journal are performed in a storage system A; and updating of replication data and creation of a journal are performed in a storage system B. A storage system C retrieves a journal from the storage system B in asynchronization with the updating, and performs updating of replication data. When failure has occurred in the storage system B, a journal-retrieving end is altered to the storage system, and the replication data is updated in accordance with the retrieved journal. | 12-18-2008 |
20090024815 | REMOTE COPY SYSTEM - A remote copy system includes a plurality of first storage systems and a plurality of second storage systems. Each first storage system assigns a sequential number to write data received from the host and sends the write data with the sequential number to the second storage system. One of the first storage systems defers the processing of the write request received from the host and instructs each of the first storage systems to create a marker, whereupon each of the first storage systems defers the processing of the write request, creates a marker including a sequential number and having a marker number, and sends the marker to the second storage system. Each of the second storage systems, when receiving a marker from the first storage system, stores the marker number included in the marker. One of the second storage systems reads the marker number stored by each of the second storage systems and reports to each of the second storage systems the marker number of smallest value of the marker numbers which were thus read. Each of the second storage systems writes to a logical volume in sequential number order write data, of the write data received from the first storage system, that includes a sequential number of a value smaller than the sequential number of the marker including the marker number reported from one of the second storage systems. | 01-22-2009 |
20090037436 | DATA PROCESSING SYSTEM - A data processing system includes at least a first storage system, a second storage system and a third storage system. The third storage system maintains a replication of data stored in the first storage system. When updating data in the first storage system, the first storage system updates the replication of data stored in the third storage system and creates a journal. The journal is formed from a copy of data used for update and update information such as a write command for update, etc. The second storage system also maintains a replication of data stored in the first storage system. The second storage system obtains the journal, and updates data stored therein corresponding to data stored in the first storage system in the order of data update performed in the first storage system. When updating data stored in the third storage system corresponding to data stored in the first storage system, the third storage system creates a journal using data update numbers created in the first storage system. When the first storage system fails, the second storage system obtains the journal from the third storage system, and updates data stored therein corresponding to data stored in the first storage system in the order of data update performed in the first storage system. | 02-05-2009 |
20090077343 | STORAGE APPARATUS HAVING VIRTUAL-TO-ACTUAL DEVICE ADDRESSING SCHEME - A storage apparatus includes a storage unit and a controller, wherein control of inputting/outputting data from/to a device provided in said storage unit is executed in accordance with a request received by said storage apparatus. An actual device of the storage apparatus corresponds to a virtual device which is external to said storage apparatus. The controller operates to perform a process for mapping an actual device address corresponding to a virtual device address, in accordance with a specification of the actual device to be mounted or unmounted to correspond to the virtual device, and storing and retaining mapping information obtained from the mapping in a first table. The controller also performs data input/output process for receiving, an access request for data input/output in which said virtual device address is specified, obtaining the actual device address mapped to said specified virtual device address in said first table, and accessing the actual device by said obtained actual device address. | 03-19-2009 |
20090187722 | Computer System Storing Data on Multiple Storage Systems - During the normal operation state of a computer system | 07-23-2009 |
20090327629 | Remote Copy Method and Remote Copy System - In a configuration in which it is necessary to transfer data from a first storage system to a third storage system through a storage system between the storage systems, there is a problem that it is inevitable to give an excess logical volume to a second storage system between the storage systems. A remote copy system includes first storage system that sends and receives data to and from an information processing apparatus, a second storage system, and a third storage system. The second storage system virtually has a second storage area in which the data should be written and has a third storage area in which the data written in the second storage area and update information concerning the data are written. Data sent from the first storage system is not written in the second storage area but is written in the third storage area as data and update information. The data and the update information written in the third storage area are read out from the third storage system. | 12-31-2009 |
20100131795 | DATA PROCESSING SYSTEM - A data processing system has a plurality of storage systems. In this system, data replication is performed at high speed and efficiency while maintaining data integrity. In addition, when failure has occurred in a configuration element, the time necessary to resume the data replication is reduced. In accordance with an instruction from first host computer, updating of replication-target data and creation of a journal are performed in a storage system A; and updating of replication data and creation of a journal are performed in a storage system B. A storage system C retrieves a journal from the storage system B in asynchronization with the updating, and performs updating of replication data. When failure has occurred in the storage system B, a journal-retrieving end is altered to the storage system, and the replication data is updated in accordance with the retrieved journal. | 05-27-2010 |
20100191864 | Message conversion method and message conversion system - A message given with an electronic signature is modified, for example, by adding or deleting data to or from the message, while keeping validity of the electronic signature. A conversion information insertion unit | 07-29-2010 |
20100199038 | REMOTE COPY METHOD AND REMOTE COPY SYSTEM - In a configuration in which it is necessary to transfer data from a first storage system to a third storage system through a storage system between the storage systems, there is a problem that it is inevitable to give an excess logical volume to a second storage system between the storage systems. A remote copy system includes first storage system that sends and receives data to and from an information processing apparatus, a second storage system, and a third storage system. The second storage system virtually has a second storage area in which the data should be written and has a third storage area in which the data written in the second storage area and update information concerning the data are written. Data sent from the first storage system is not written in the second storage area but is written in the third storage area as data and update information. The data and the update information written in the third storage area are read out from the third storage system. | 08-05-2010 |
20100262777 | STORAGE APPARATUS AND METHOD FOR ELIMINATING REDUNDANT DATA STORAGE USING STORAGE APPARATUS - A storage apparatus | 10-14-2010 |
20100281229 | Computer System Storing Data On Multiple Storage Systems - During the normal operation state of a computer system | 11-04-2010 |
20100313043 | Storage Apparatus and Its Power Saving Control Method - Provided are a storage apparatus and its power saving control method capable of performing sufficient power saving to multiple memory devices without deteriorating the response performance to a host system. If multiple logical volumes formed in disk drives configuring a parity group are in an offline status where a path group from the host computer is not set, a control processor sets the multiple disk drives of the parity group to a power saving status. | 12-09-2010 |
20110040934 | STORAGE APPARATUS HAVING VIRTUAL-TO-ACTUAL DEVICE ADDRESSING SCHEME - A storage apparatus includes a storage unit and a controller, wherein control of inputting/outputting data from/to a device provided in said storage unit is executed in accordance with a request received by said storage apparatus. An actual device of the storage apparatus corresponds to a virtual device which is external to said storage apparatus. The controller operates to perform a process for mapping an actual device address corresponding to a virtual device address, in accordance with a specification of the actual device to be mounted or unmounted to correspond to the virtual device, and storing and retaining mapping information obtained from the mapping in a first table. The controller also performs data input/output process for receiving, an access request for data input/output in which said virtual device address is specified, obtaining the actual device address mapped to said specified virtual device address in said first table, and accessing the actual device by said obtained actual device address. | 02-17-2011 |
20110138140 | DATA PROCESSING SYSTEM - A data processing system has a plurality of storage systems. In this system, data replication is performed at high speed and efficiency while maintaining data integrity. In addition, when failure has occurred in a configuration element, the time necessary to resume the data replication is reduced. In accordance with an instruction from first host computer, updating of replication-target data and creation of a journal are performed in a storage system A, and updating of replication data and creation of a journal are performed in a storage system B. A storage system C retrieves a journal from the storage system B in asynchronization with the updating, and performs updating of replication data. When failure has occurred in the storage system B, a journal-retrieving end is altered to the storage system, and the replication data is updated in accordance with the retrieved journal. | 06-09-2011 |
20120079225 | DATA PROCESSING SYSTEM - A data processing system includes a first storage system that is connected to a host device and sends and receives data to and from the host device; a second storage system that is connected to the first storage system and receives data from the first storage system; and a third storage system that is connected to the first storage system and receives data from the first storage system. The first storage system, the second storage system and the third storage system are arranged to be changeable between a first status including first and second copy pairs and a second status including a third copy pair in response to a predetermined condition at the first storage system. | 03-29-2012 |
20120089779 | Data Processing System and Storage Subsystem Provided in Data Processing System - A first storage subsystem | 04-12-2012 |
20120131272 | Data Processing System and Storage Subsystem Provided in Data Processing System - A first storage subsystem includes a first storage device and a second storage device(s). A second storage subsystem includes a third storage device and a fourth storage device. A third storage subsystem comprises a fifth storage device and a sixth storage device. The first storage subsystem generates a dataset comprising an update number expressing the update order of the first storage device and write data stored in the first storage device, stores the generated dataset in the one or more second storage devices, and transmits the data set to the second and third storage subsystems. Each of the second and third storage subsystems stores the received dataset in the third storage device or fifth storage device, reads a dataset from the third or fifth storage device according to the update number, and stores the write data within the dataset in the fourth storage device or sixth storage device. | 05-24-2012 |
20120191652 | REMOTE COPY SYSTEM - In a system in which data employed by a computer is stored in a storage system, the storage system transfers this data to another storage system and a copy of the data is maintained in the other storage system. The consistency of the copy is maintained even when data is written, to the storage system by a computer, without having a write time applied. A source storage system, when a write time is applied to a write request, records the write time and applies this write time to the received write data and, when no write time is applied, applies the recorded write time to the received write data and transfers the write data with this write time applied thereto, to a target storage system. The target storage system stores the write data in a logical volume in the target storage system in accordance with the write time. | 07-26-2012 |
20120226878 | DATA PROCESSING SYSTEM - A data processing system has a plurality of storage systems. In this system, data replication is performed at high speed and efficiency while maintaining data integrity. In addition, when failure has occurred in a configuration element, the time necessary to resume the data replication is reduced. In accordance with an instruction from first host computer, updating of replication-target data and creation of a journal are performed in a storage system A, and updating of replication data and creation of a journal are performed in a storage system B. A storage system C retrieves a journal from the storage system B in asynchronization with the updating, and performs updating of replication data. When failure has occurred in the storage system B, a journal-retrieving end is altered to the storage system, and the replication data is updated in accordance with the retrieved journal. | 09-06-2012 |
20120290787 | REMOTE COPY METHOD AND REMOTE COPY SYSTEM - A remote copy system includes: a first storage system having a first logical volume accompanied with a first plurality of disk drives in the first storage system; a second storage system having a second logical volume, which is a virtual volume not accompanied with a second plurality of disk drives in the second storage system, the virtual volume configuring a first remote copy pair with the first logical volume; and a third storage system having a third logical volume accompanied with a third plurality of disk drives in the third storage system, the third logical volume configuring a second remote copy pair with the virtual volume and storing a copied data of data stored in the first logical volume. If the second storage system receives write data sent from the first storage system to the virtual volume, the second storage system transfers the write data to the third logical volume. | 11-15-2012 |