Patent application number | Description | Published |
20090019241 | STORAGE MEDIA STORING STORAGE CONTROL PROGRAM, STORAGE CONTROLLER, AND STORAGE CONTROL METHOD - A computer to runs access control to a plurality of storage areas by; | 01-15-2009 |
20090024768 | CONNECTION MANAGEMENT PROGRAM, CONNECTION MANAGEMENT METHOD AND INFORMATION PROCESSING APPARATUS - A storage apparatus connection managing apparatus, detecting upon detecting that a new storage apparatus has been connected to the computer, whether the storage apparatus includes a data area capable of storing data and a program area having preliminarily stored therein a data access program for accessing the data area of the storage apparatus and a volume management program for managing a data storage destination in an integrated manner when storing data in a distributed manner in a plurality of storage apparatuses. The apparatus reads the data access program and the volume management program from the program area of the detected storage apparatus and activates the programs in the apparatus. | 01-22-2009 |
20090037681 | Computer-readable storage medium in which storage-management program is recorded, storage-management apparatus, and storage-management method - A storage-management apparatus and method that manages storage areas. The storage-management apparatus includes a collecting unit that collects valid-area-determination information items, each of which shows whether a corresponding one of the storage areas is a valid or invalid area, and timestamp information items, each of which shows that a corresponding one of the storage areas has been accessed. In accordance with the valid-area-determination information items and the timestamp information items, data from a storage area which is selected from among valid areas and whose timestamp information item is oldest is copied to a storage area which is selected from among invalid areas and whose timestamp information item is oldest, and timestamp information items and valid-area-determination information items concerning the storage area from which the data is copied and concerning the storage area to which the data is copied is updated. | 02-05-2009 |
20090150629 | STORAGE MANAGEMENT DEVICE, STORAGE SYSTEM CONTROL DEVICE, STORAGE MEDIUM STORING STORAGE MANAGEMENT PROGRAM, AND STORAGE SYSTEM - A storage management device includes a management unit for managing a storage device assigned thereto and a temporary storage unit assigned thereto. The management unit comprises a backup unit for, when data is written into the storage device, storing the data in the previously assigned temporary storage unit before the writing of the data into the storage device is completed, and a take-over unit for, when data which is already stored in the temporary storage unit, but which is not yet written into the storage device exists when the storage device and the temporary storage unit are assigned, writing the not-yet-written data into the storage device. | 06-11-2009 |
20090164839 | STORAGE CONTROL APPARATUS AND STORAGE CONTROL METHOD - A storage control apparatus monitors whether or not one or more storage management apparatuses are properly operating. A recovery target extraction unit extracts a recovery target storage area when the existence of a malfunctioning storage management apparatus is detected, the recovery target storage area being a storage area that has been duplexed with a storage area of the malfunctioning storage management apparatus. A duplexing control unit performs control so that, if the recovery target storage area has no data stored therein, the recovery target storage area is duplexed with a storage area that has no data stored therein and that is unused. If the recovery target storage area has data stored therein, the recovery target storage area is duplexed with a non-duplexed storage area and the data stored in the recovery target storage area is copied into the non-duplexed storage area. | 06-25-2009 |
20090164844 | STORAGE MANAGEMENT APPARATUS AND STORAGE SYSTEM - A storage management apparatus manages a plurality of storage apparatuses connected to each other over a network in a storage system that distributes data among the storage apparatuses and stores the data therein. The storage management apparatus has a patrol process executing unit configured to execute a patrol process to confirm whether a storage area of each storage apparatus operates normally and a patrol flow controlling unit configured to control a patrol flow indicating the speed of the patrol process executed by the patrol process executing unit. | 06-25-2009 |
20090177917 | PROCESS, APPARATUS, AND PROGRAM FOR SYSTEM MANAGEMENT - In a system management apparatus, a failure detection unit detects a readout failure in one of blocks constituting distributed data stored in a first RAID disk array. A request unit requests a computer to supplement one of the blocks of the distributed data stored in the first RAID disk array in which a readout failure irrecoverable by use of only the data stored in the first RAID disk array occurs, where the computer has a second RAID disk array storing a duplicate of the distributed data stored in the first RAID disk array. And an overwriting unit receives data corresponding to the one of the blocks from the computer, and overwrites the one of the blocks with the received data. | 07-09-2009 |
20090198385 | STORAGE MEDIUM FOR STORING POWER CONSUMPTION MONITOR PROGRAM, POWER CONSUMPTION MONITOR APPARATUS AND POWER CONSUMPTION MONITOR METHOD - A power consumption monitor device monitors power consumption of one or more devices through a network. The monitor device includes a storage unit, a load information collecting unit and a power consumption estimation unit. The storage unit stores power consumption estimation information indicating a relation between power consumption and processing load of the one or more devices. The load information collecting unit collects load information indicating the processing load of the one or more devices through the network to the monitor device. The power consumption estimation unit estimates power consumption of the one or more device based on the collected load information and the power consumption estimation information. | 08-06-2009 |
20090248995 | ALLOCATION CONTROL APPARATUS AND METHOD THEREOF - An allocation control apparatus may access an address table storing addresses of slice areas allocated in a storage area for an entire storage system having a plurality of storage devices and addresses that do not correspond to allocated slice areas. The allocation control apparatus includes a reception unit receiving a request for allocating an arbitrary storage capacity an allocation unit allocating, by referring to the address table, an address that does not correspond to the allocated slice area for at least a part of the requested storage capacity and allocates an address for the slice area to the remaining storage capacity when the reception unit receives the allocation request, and a transmission unit transmitting the result allocated by the allocation unit to a requesting source of the allocation request. | 10-01-2009 |
20090254702 | RECORDING MEDIUM STORING DATA ALLOCATION CONTROL PROGRAM, DATA ALLOCATION CONTROL DEVICE, DATA ALLOCATION CONTROL METHOD, AND MULTI-NODE STORAGE-SYSTEM - A data allocation control program manages data allocation when data is distributively stored in a plurality of disk nodes that are shifted to a power saving mode unless access is performed for a certain time. The program produces a plurality of allocation pattern candidates each indicating the disk nodes in which the respective data are to be stored. The program calculates a no-access period expectation that represents an expected value of occurrence of a no-access period during which access is not performed to some of the disk nodes. The program selects as an allocation pattern for data reallocation, one of the plurality of produced allocation pattern candidates with the largest calculated no-access period expectation. The program instructs the disk nodes to reallocate the respective data in accordance with the selected allocation pattern. | 10-08-2009 |
20090282287 | SUPPORTING APPARATUS FOR ANALYZING COMPUTER OPERATION STATUS - Processing time required from transmission of a request packet including a processing request from a client, until return of a reply packet in which internal information including an operation status of a plurality of servers is added to an execution result of processing corresponding to the processing request, obtained by the servers in cooperation with each other, is calculated by a function incorporated beforehand in the respective servers. Moreover, the internal information added to the reply packet is extracted and stored in an internal information DB in association with the calculated required time of the processing. Furthermore predetermined statistical processing is performed with respect to the internal information and the required time associated with the internal information stored in the internal information DB to analyze the operation status of the plurality of servers. | 11-12-2009 |
20090307524 | DUPLICATION COMBINATION MANAGEMENT PROGRAM, DUPLICATION COMBINATION MANAGEMENT APPARATUS, AND DUPLICATION COMBINATION MANAGEMENT METHOD - A simultaneous failure occurrence degree calculation section calculates a simultaneous failure occurrence degree a value of which becomes smaller with an increase in a difference between numeric values indicative of manufacture date information on a computer which performs a process on the basis of a duplication combination management program. A combination pattern generation section then combines two of a plurality of storage apparatus and generates a plurality of combination patterns. A simultaneous failure occurrence degree adding section then calculates a total of simultaneous failure occurrence degrees corresponding to combinations of storage apparatus for each of the plurality of combination patterns. A duplication combination pattern determination section then determines that a combination pattern for which the total of simultaneous failure occurrence degrees is the smallest is a duplication combination pattern. | 12-10-2009 |
20090319724 | DISTRIBUTED DISK CACHE SYSTEM AND DISTRIBUTED DISK CACHE METHOD - According to an aspect of the embodiment, a packet analyzing apparatus monitors a concentration level of input and output access from an access apparatus to a disk device, specifies a data area to which the concentration level of input and output access exceeds a first threshold, and instructs a storage server to cache the data area. The packet analyzing apparatus monitors a concentration level of input and output access to a data area to which the data area is cached, and, when the concentration level of input and output access is below a second threshold, instructs the storage server to release the caching. | 12-24-2009 |
20090319749 | PROGRAM, APPARATUS AND METHOD FOR STORAGE MANAGEMENT - In a computer for executing processing based on a storage management program, a management information storing unit designates, from the data blocks having the same content, main-data used as an access destination and sub-data used as a backup, and stores management information that registers storage nodes as allocation destinations of the respective main-data and sub-data; a load information collecting unit continuously collects load information on the storage nodes; a replacement object detecting unit detects a pair of the main-data and the sub-data having the same content and having a predetermined condition such that a load difference between the allocation destination of the main-data and that of the sub-data exceeds a predetermined allowable value; and a management information updating unit replaces roles of the main-data and the sub-data between the detected pair of data blocks. | 12-24-2009 |
20090319834 | COMPUTER-READABLE STORAGE MEDIUM STORING STORAGE MANAGEMENT PROGRAM, STORAGE MANAGEMENT METHOD,AND STORAGE MANAGEMENT APPARATUS - A storage management apparatus that performs a read/write check on each of a plurality of data-storing areas of a storage device, and is formed by a storage node that performs reading/writing of the data in the storage device. A computer determines whether or not the data exits, by referring to a flag provided in each data-storing area. The computer performs only an operation of writing the data into the data-storing area in which the data does not exist, and perform operations of reading and writing the data from and into the data-storing area in which the data exists. | 12-24-2009 |
20090320041 | COMPUTER PROGRAM AND METHOD FOR BALANCING PROCESSING LOAD IN STORAGE SYSTEM, AND APPARATUS FOR MANAGING STORAGE DEVICES - In a distributed storage system, client terminals make access to virtual storage areas provided as logical segments of a storage volume. Those logical segments are associated with physical segments that serve as real data storage areas. A management data storage unit stores management data describing the association between such logical segments and physical segments. Upon receipt of access requests directed to a specific access range, a segment identification unit consults the management data to identify logical segments in the specified access range and their associated physical segments. A remapping unit subdivides the identified logical segments and physical segments into logical sub-segments and physical sub-segments, respectively, and remaps the logical sub-segments to the physical sub-segments according to a predetermined remapping algorithm. A data access unit executes the access requests based on the remapped logical sub-segments and physical sub-segments. | 12-24-2009 |
20090327642 | Storage management program, storage management method, and storage management apparatus - In a computer executing processes based on a storage management program, an attribute collection unit collects attributes of storage nodes. A group creation unit creates at least two groups that include the storage nodes, in accordance with the attributes of the storage nodes collected by the attribute collection unit. A data allocation unit allocates distributed data and redundant distributed data to the groups created by the group creation unit in such a manner that the distributed data and the redundant distributed data having the same content as the distributed data are placed in different groups. | 12-31-2009 |
20090328027 | CLUSTER SYSTEM, PROCESS FOR UPDATING SOFTWARE, SERVICE PROVISION NODE, AND COMPUTER-READABLE MEDIUM STORING SERVICE PROVISION PROGRAM - In a cluster system: a heartbeat transmission unit in a service provision node transmits to a monitoring node a heartbeat packet which contains interval information indicating an interval greater than normal intervals at which normal heartbeat packets are transmitted, when an execution unit in the service provision node receives a stop command. Thereafter, when software realizing the execution unit is updated and the execution unit is restarted, the heartbeat transmission unit periodically transmits the normal heartbeat packets to the monitoring node at the normal intervals, where the normal heartbeat packets contain interval information indicating the normal intervals. A heartbeat monitoring unit in the monitoring node determines that the execution unit is in operation, while the monitoring node receives heartbeat packets at intervals indicated by the interval information stored in the monitoring node and updated with received interval information. | 12-31-2009 |
20090328151 | Program, apparatus, and method for access control - In a computer which executes an access control program, an authentication information storage unit stores authentication information. A logical volume acquiring unit acquires a logical volume associating data with storage nodes storing the data, from a predetermined database. In response to an access request to access data, a data access unit identifies a storage node to be accessed, based on the logical volume, and sends the authentication information and a command corresponding to the access request to the identified storage node. | 12-31-2009 |
20100049918 | VIRTUAL DISK MANAGEMENT PROGRAM, STORAGE DEVICE MANAGEMENT PROGRAM, MULTINODE STORAGE SYSTEM, AND VIRTUAL DISK MANAGING METHOD - In a multinode storage system, a virtual disk associated with a storage device to be connected is created, and a slice of a connected storage device is allocated to one segment of the virtual disk. Next, one slice of data in the storage device to be connected is copied to the connected storage device. The rest of data in the storage device to be connected is divided into slices, which are allocated to segments of the virtual disk. Then, metadata of the rest of the slices is written into a management information area in which copying of the data therefrom has been completed. | 02-25-2010 |
20100106907 | Computer-readable medium storing data management program, computer-readable medium storing storage diagnosis program, and multinode storage system - A computer-readable medium storing a data management program makes a computer manage data redundantly stored in storage devices having storage areas split into slices for data management. The data management program realizes the following functions in the computer. A first function receives irregularity information indicating that each of one or more of the storage devices may be possibly faulty, and stores the irregularity information in a storage; and a second function determines, by reference to the irregularity information, whether or not a first storage device containing a slice to be accessed is possibly faulty, on receipt of access information indicating occurrence of a request to access the slice. When yes is determined, the second function instructs an external device to recover data stored in the slice, where the external device controls a second storage device storing redundant data identical to the data stored in the slice. | 04-29-2010 |
20100185761 | SERVICE PROVIDER NODE, AND COMPUTER-READABLE RECORDING MEDIUM STORING SERVICE PROVIDER PROGRAM - A computer-readable recording medium storing a verification support program is provided. The computer-readable recording medium storing a service provider program that causes a computer to execute: providing a service through acceptance of a service request; establishing a process-to-process communications by waiting for a process to be a destination of the service; stopping provision of the service corresponding to the service request accepted by the providing after the process-to-process communications is established; transmitting, while the provision of the service is being stopped, information for use by the providing to provide the service, to the process by the process-to-process communications; and ending, after the information is completely transmitted by the transmitting, the acceptance of the service request by the providing. | 07-22-2010 |
20100191757 | RECORDING MEDIUM STORING ALLOCATION CONTROL PROGRAM, ALLOCATION CONTROL APPARATUS, AND ALLOCATION CONTROL METHOD - An allocation control apparatus allocates duplicate logical volume divided areas to virtual storage areas that do not have data storage area in the physical storage area. The apparatus associates identification information of the allocated virtual storage areas, of the duplicate logical volume divided areas, and of duplication source logical volume divided areas to be set in the management information. The apparatus detects, upon a data writing request, based on the management information, the unallocated real storage area in the logical volume divided area. The apparatus reallocates the real storage area to the duplicate logical volume divided area to update the management information. The apparatus identifies, based on the management information, the real storage area allocated to the duplication source logical volume divided area corresponding to the duplicate logical volume divided area. The apparatus copies data stored in the real storage area to the real storage area. | 07-29-2010 |
20100198955 | COMPUTER-READABLE RECORDING MEDIUM STORING SOFTWARE UPDATE COMMAND PROGRAM, SOFTWARE UPDATE COMMAND METHOD, AND INFORMATION PROCESSING DEVICE - An information processing device is provided that provides service by executing a service provider program in a cluster system. The device includes a program information transmission unit that transmits to a monitoring node that monitors the cluster system, a node list information reception unit that receives node list information, an update target selection unit that determines which of the other information processing devices which are not yet updated with the service provider program by referring to the program information in the node list information, a command timing determination unit that determines a time after a lapse of the standby time found in the first update timing information as a command timing of the update command, an update timing information generation unit that generates second update timing information and an update command transmission unit that transmits the update command about the service provider program and the second update timing information. | 08-05-2010 |
20100199126 | DISK ARRAY APPARATUS, DATA DISTRIBUTION AND MANAGEMENT METHOD, AND DATA DISTRIBUTION AND MANAGEMENT PROGRAM - A parity-data generating unit generates, in response to a write request containing update data, updated parity data in the parity group to which the update data belongs. A time-series-information generating unit generates time-series information indicating an anteroposterior relationship during writing between the update data and existing data stored in the unit storage area to which the update data is to be written. A time-series-information adding unit adds the time-series information, generated in response to the write request, to the update data as certification time-series information and that adds comparison time-series information to the updated parity data in association with the update data, the comparison time-series information having the same value as the certification time-series information. A writing unit distributes and writes, to the multiple storage devices, the update data to which the certification time-series information is added and the updated parity data to which the comparison time-series information is added. | 08-05-2010 |
20100217933 | Allocation control program and allocation control device - An allocation control device divides the storage management devices into groups based on grouping factors. It generates group management information about each group based on the grouping factors corresponding to storage management devices belonging to the group. It obtains logical volume information about a subject logical volume to be allocated to the physical storage areas, the logical volume information indicating the capacity of the subject logical volume and a predicted capability value of the subject logical volume. It acquires the physical storage areas to which the subject logical volume is to be allocated, based on the logical volume information and the group management information. It selects one of the groups for which the maximum processing capability is higher than the predicted capability value of the subject logical volume. It allocates divisional areas of the subject logical volume to the physical storage areas in the selected group. | 08-26-2010 |
20100228915 | LOGICAL VOLUME CONFIGURATION INFORMATION DISTRIBUTION PROGRAM, LOGICAL VOLUME CONFIGURATION INFORMATION DISTRIBUTION METHOD, AND LOGICAL VOLUME CONFIGURATION INFORMATION DISTRIBUTION APPARATUS - A recording medium storing a logical volume configuration information distribution program causing a computer to execute processing based on logical volume configuration information that defines a correspondence relation between a virtual storage area in a logical volume defined virtually and a real storage area in a storage unit, the logical volume configuration information distribution program includes: when the correspondence relation between the virtual storage area and the real storage area is changed, referencing an access node list storage unit for storing an access node list in which identification information of the access node is registered, and transmitting update information that indicates an updated correspondence relation concerning the virtual storage area whose correspondence relation with the real storage area has been changed, to the access node indicated in the access node list via the network. | 09-09-2010 |
20100235604 | COMPUTER-READABLE RECORDING MEDIUM STORING MANAGEMENT PROGRAM, MANAGEMENT APPARATUS, AND MANAGEMENT METHOD - A management apparatus and method that manage a storage system, in which an access node and a storage node, with which the management apparatus is in communication via the network. The management apparatus includes a logical volume judging unit that acquires a plurality of processing requests to each of the plurality of storage areas, references a logical volume allocation information storage unit that stores a correspondence relationship between the plurality of storage areas and the plurality of logical volumes in the storage node, and judges a logical volume corresponding to a storage area to become a processing object of each processing request, and a processing request breakdown calculating unit that counts an acquisition count of each processing request for each logical volume based on a judgment result by the logical volume judgment unit, and calculates a proportion of each acquisition count to a total of respective acquisition counts. | 09-16-2010 |
20100250855 | COMPUTER-READABLE RECORDING MEDIUM STORING DATA STORAGE PROGRAM, COMPUTER, AND METHOD THEREOF - A computer-readable recording medium storing a data storage program, a method and a computer are provided. The computer includes a cache table including an address area for storing an address and a user data area for storing user data corresponding to the address, and executes an operation including, reading user data at a specified address from a recording medium, delta-decoding the read difference data, and determining the decompressed user data to be the read user data, and writing the read user data in the user data area of the cache table when a size of the user data read by the delta-decoding is equal to or less than a threshold value and writing an address corresponding to the read user data in the address area of the cache table, obtaining difference data between the user data requested to be written and the corresponding user data and writing the difference data. | 09-30-2010 |
20100306495 | RECORDING MEDIUM STORING MANAGEMENT PROGRAM, MANAGEMENT DEVICE AND MANAGEMENT METHOD - A management device obtains, from the plurality of storage nodes, information of accesses which are made to the actual storage areas included in the storage nodes, generating load information of the actual storage areas based on the access information, and storing the generated load information in a load information storage unit. The device changes, based on the load information stored in the load information storage unit, the assignment relations of the actual storage areas with respect to the virtual storage areas such that loads of the storage nodes are leveled. The device instructs the plurality of storage nodes to move the data in the actual storage areas depending on change in the assignment of the actual storage areas to the virtual storage areas. | 12-02-2010 |
20110093409 | COMPUTER PRODUCT, CHARGE CALCULATING APPARATUS, AND CHARGE CALCULATING METHOD - A non-transitory computer-readable recording medium stores therein a charge calculating program that causes a computer that manages a database of different data items to execute recording for each data item, information indicating the number of clients that receive the data item; extracting from the information recorded at the recording and for each data item to be received by a given client, information indicating the number of clients receiving the data item; calculating charges for the given client, based on the extracted information; and outputting the calculated charges. | 04-21-2011 |
20110138144 | COMPUTER PROGRAM, APPARATUS, AND METHOD FOR MANAGING DATA - A computer in a disk node executes a data management program. A deduplication-eligible data unit detection module detects a data unit whose deduplication grace period after last write time has expired. A deduplication address fetch module interacts with an index server to obtain a deduplication address associated with a unique value of data stored in a constituent storage space allocated to the data unit that is found to be deduplication-eligible. A constituent storage space deallocation module stores the obtained deduplication address in a data unit record memory, together with information indicating the detected data unit. Simultaneously a constituent storage space deallocation module releases the allocated constituent storage space from the detected data unit. | 06-09-2011 |
20120137086 | NON-TRANSITORY MEDIUM, ACCESS CONTROL METHOD, AND INFORMATION PROCESSING APPARATUS - A file server has a conversion table that stores therein, in a corresponding manner, logical addresses specified by a higher-level layer and physical addresses specified by a disk driver that are address information indicative of a storage area in a disk device. The file server accesses the disk device with a storage area indicated by a physical address as an access destination and counts up the number of access requests to each storage area in a given period of time for each of the logical addresses. The file server then updates the conversion table such that the physical addresses are lined up in a descending order of the logical addresses of a higher number of the access requests counted. Thereafter, the file server changes storage areas of data stored in the storage device based on the conversion table updated. | 05-31-2012 |
20120265907 | ACCESS METHOD, COMPUTER AND RECORDING MEDIUM - An access method includes: obtaining, by a computer, a result of monitoring a busy rate and a number of access operations per unit time of a storage device, the storage device having a first storage area and a second storage area; calculating a characteristic of correlation between the busy rate and the number of access operations per unit time based on the result; calculating a second number of access operations per unit time based on the characteristic of the correlation such that a sum of a first busy rate corresponding to a first number of access operations per unit time and a second busy rate corresponding to a second number of access operations per unit time becomes equal to or lower than a given busy rate; and controlling a number of operations to access the second storage area per unit time based on the second number of access operations. | 10-18-2012 |
20130013871 | INFORMATION PROCESSING SYSTEM AND DATA PROCESSING METHOD - An information processing system includes a first processor to store data segments in a first memory, to send the data segments to be stored in the first memory to a second processor, and to read the data segments from the first memory so as to store the data segments in a second memory; and the second processor to store the data segments to be stored sent from the first processor in a third memory, wherein when the first processor notifies the second processor about data that is permitted to be removed, the first processor sends ID information to the second processor that renders a particular data segment that was last stored in the second memory identifiable, and the second processor removes from the third memory the particular data segment and an older data segment stored previous to the particular data segment from the data segments stored in the third memory. | 01-10-2013 |
20130042082 | INFORMATION PROCESSING APPARATUS AND STORAGE CONTROL METHOD - An information processing apparatus includes a first storage unit and a processor. The first storage unit includes a first storage area. The processor receives a first request to write first data into the first storage area. The processor requests an external apparatus to write the first data into a second storage area in a second storage unit included in the external apparatus. The processor determines whether a first response has been received from the external apparatus. The first response indicates that the first data has been written into the second storage area. The processor writes the first data into the first storage area when the first response has been received. The processor requests, without writing the first data into the first storage area, the external apparatus to write second data stored in the first storage area into the second storage area when the first response has not been received. | 02-14-2013 |
20130054727 | STORAGE CONTROL METHOD AND INFORMATION PROCESSING APPARATUS - A control unit shifts a boundary between a range of hash values allocated to a first node and a range of hash values allocated to a second node from a first hash value to a second hash value to thereby expand the range of hash values allocated to the first node. The control unit moves data which is part of data stored in the second node and in which hash values calculated from associated keys belong to a range between the first hash value and the second hash value, from the second node to the first node. | 02-28-2013 |
20130055371 | STORAGE CONTROL METHOD AND INFORMATION PROCESSING APPARATUS - Upon receipt of a first key and first data, a control unit exercises control to store second data indicating a second key in association with the first key in a first node and to store the first data in association with the second key in a second node. Upon receipt of an access request that specifies the first key, the control unit detects that data stored in association with the first key is the second data, and accesses the first data stored in the second node on the basis of the second key indicated by the second data. | 02-28-2013 |
20130066883 | DATA MANAGEMENT APPARATUS AND SYSTEM - A data management apparatus sends specific data and key information corresponding to the specific data to another apparatus, when executing a process to change a storage destination of the specific data in which the hash value obtained by applying a predetermined hash function to corresponding key information belongs to a certain range, from the data management apparatus to the other apparatus, and sends the identification information of the other apparatus stored in correspondence with the certain range to a request source of an operation request, when the operation request with respect to data corresponding to key information is received after the process. | 03-14-2013 |
20130097341 | IO CONTROL METHOD AND PROGRAM AND COMPUTER - The disclosed method includes obtaining a result concerning a busy rate and the number of accesses per unit time for a storage device including first and second storage areas; determining, from the result, whether an event that a first indicator value for the busy rate is reset occurs; when the event occurred, notifying a controller that makes the number of accesses for the second storage area not greater than the notified number of accesses of the first number of accesses less than the second number of accesses, which was notified immediately before; obtaining another result; updating the first indicator value based on another result; calculating the third number of accesses so that a sum of busy rates corresponding to the third number of accesses and corresponding to the designated number of accesses becomes equal to the updated first indicator value; and notifying the controller of the third number of accesses. | 04-18-2013 |
20130111165 | COMPUTER PRODUCT, WRITING CONTROL METHOD, WRITING CONTROL APPARATUS, AND SYSTEM | 05-02-2013 |
20130132692 | STORAGE DEVICES AND STORAGE SYSTEMS - A storage device is one of a plurality of storage devices storing replicas of data. The storage device includes a memory and a processor coupled to the memory. The processor executes a process includes transmitting an update request to at least one destination storage device through a plurality of paths when the storage device is requested to update the data by a client. The process includes notifying the client that the updating of the data has been completed when having received a response through one of the paths, the response being issued by the destination storage device serving as the terminal point of the path when the destination storage device receives the update request through all the paths having the destination storage device as the terminal point. | 05-23-2013 |
20130138604 | STORAGE SYSTEM AND STORAGE DEVICE - A storage system having a plurality of storages. The each of the storages include a memory and a processor coupled to the memory. The processor executes a process including transmitting an update request for data which is commonly stored in the plurality of storages according to a predetermined transmission order indicating a path to transfer the update request. The process includes updating data when receiving an update request from another storage. The process includes changing the predetermined transmission order to a transmission order in which one or more storages included in the path are excluded according to the number of times the update request for the data is received. | 05-30-2013 |
20130138893 | STORAGE DEVICE, COMPUTER-READABLE RECORDING MEDIUM, AND STORAGE CONTROL METHOD - A storage device being one of a plurality of storage devices storing data includes a memory and a processor coupled to the memory. The processor executes determining, when having received a new request and a new priority information during a preparation for an execution of another update processing, whether a new priority indicated by the new priority information is higher than a priority of the update processing in the preparation. The process including canceling the update processing in the preparation when having determines at the determining that the new priority is higher than the priority of the update processing in the preparation. The process includes forwarding the new request and the new priority information to another storage device when having determined at the determining that the new priority is higher than the priority of the update processing in the preparation. | 05-30-2013 |
20130138999 | COMPUTER-READABLE RECORDING MEDIUM, DATA MANAGEMENT METHOD, AND STORAGE DEVICE - An internode put requesting unit detects a time-out with respect to a put request issued to the next node in the order of a multiplexing chain and notifies a put/get executing unit of the time-out. The put/get executing unit sends an error to the previous node in the order of the multiplexing chain or a client and instructs a put-failed-data synchronizing unit to synchronize data failed to be put, and the put-failed-data synchronizing unit performs a synchronization process. A primary makes other put requests wait until completion of the synchronization process. Furthermore, when having received the error, the client issues a get request to the tail end of the multiplexing chain. | 05-30-2013 |
20130219144 | STORAGE APPARATUS, STORAGE SYSTEM, METHOD OF MANAGING STORAGE, AND COMPUTER-READABLE STORAGE MEDIUM HAVING STORAGE MANAGEMENT PROGRAM STORED THEREON - A storage apparatus is provided, including a first storage unit; a load information obtaining unit that obtains load information for each of a plurality of portions defined by dividing the first storage unit; a portion identifying unit that identifies a candidate portion that is to be relocated in the first storage unit based on the load information; a determining unit that determines whether or not data in the candidate portion is allowed to be migrated to a second storage unit, the second storage unit having a performance value higher than a performance value of the first storage unit; an adder that adds the second storage unit, when the determining unit determines that the data in the candidate portion is not allowed to be migrated; and a relocation unit that migrates the data in the candidate portion from the first storage unit to the added second storage unit. | 08-22-2013 |
20130246479 | COMPUTER-READABLE RECORDING MEDIUM, DATA MODEL CONVERSION METHOD, AND DATA MODEL CONVERSION APPARATUS - A converting unit determines the type of data item of which data defined in a hierarchical data model is composed. When it is determined that the type of the data item is an array, the converting unit adds information obtained by binding array information, indicating an array, with order information, indicating the order of an array, to an item name of data that is defined in a non-hierarchical data model by using the item name and a value. When it is determined that the type of the data item is an object, the converting unit adds information obtained by binding object information, indicating an object, with an element to an item name. When it is determined that the type of the data item is a value, the converting unit creates data in the non-hierarchical data model by associating the value with the item name. | 09-19-2013 |
20130246580 | TRANSFER CONTROL DEVICE, COMPUTER-READABLE RECORDING MEDIUM STORING PROGRAM, AND STORAGE DEVICE - A transfer data block is selected, and a data file including the transfer data block is selected as a transfer data file. All the data blocks of the transfer data file are added to the transfer data block. When all the data files including each transfer data block is selected as a transfer data file, the transfer data block is selected as a deletion data block. When a total data amount of the deletion data block is larger than or equal to a predetermined target deletion data amount and a ratio of a total data amount of the transfer data block to the total data amount of the deletion data block is smaller than or equal to a predetermined value, the data file is transferred from a transfer source node to a transfer destination node. Accordingly, a storage can be used efficiently. | 09-19-2013 |
20130246597 | PROCESSOR, COMPUTER READABLE RECORDING MEDIUM RECORDING PROGRAM THEREIN, AND PROCESSING SYSTEM - There are provided a processing unit that processes received requests, a storage unit that stores order information added to the last-processed request among the requests processed by the processing unit as final request information, a determination unit that determines whether the received request has been processed with reference to the final request information based on the order information added to the received request, and a control unit that, when the determination unit determines that the received request has been processed, prevents the received request from being processed by the processing unit, thereby preventing overlapped execution of a command. | 09-19-2013 |
20130246717 | INFORMATION PROCESSING SYSTEM - An information processing system includes: CPUs; storage devices; switches; dummy storage devices which are with respective storage devices and each of which sends, when receiving an identifying information request, its own identifying information back to a sender of the identifying information request; and dummy CPUs which are associated with respective CPUs and each of which tries to, when receiving an instruction for acquiring identifying information from a dummy storage device, acquire the identifying information of the dummy storage device by transmitting the identifying information request, and sends the identifying information as response information back to a sender device of the acquiring instruction. | 09-19-2013 |
20130246840 | NODE APPARATUS OF MULTI-NODE STORAGE SYSTEM AND METHOD FOR MANAGING PROCESSING SPEED - A storage management apparatus manages a plurality of storage apparatuses in a storage system that disperses and stores data that is made redundant so as to have a predetermined redundancy level. The storage management apparatus includes: a patrol process unit that performs, at a patrol speed, a patrol process of confirming that the plurality of storage apparatuses are being operated normally; a relocating process unit that performs, at a relocating process speed, a relocating process of moving the data between the plurality of storage apparatuses; a recovery process unit that performs, at a recovery process speed, a recovery process of recovering the redundancy level of the data when a fault occurs in the plurality of storage apparatuses; and a processing speed control unit that controls the recovery process speed or a sum of the patrol process speed and the relocating process speed to have a predetermined value. | 09-19-2013 |
20130262384 | REPLICATION SYSTEM AND METHOD OF REBUILDING REPLICATION CONFIGURATION - A replication system includes: N (≧3) storage devices; and N nodes, connected to a host via a 1st network and connected to the N number of storage devices via a 2nd network, each to receive a request for accessing a storage device associated with itself and to have an access with a content in response to the received access request to the storage device, wherein when a node receives a write request of data from the host, each of M nodes (110-03-2013 | |
20130262924 | METHOD AND SYSTEM FOR STORAGE MANAGEMENT - Multiple storage apparatuses are provided, at least part of which are individually incorporated into one of storage groups. Each of multiple control apparatuses is configured to, when assigned one or more of the storage groups each including one or more of the storage apparatuses, control data storage by storing data designating each assigned storage group redundantly in the storage apparatuses of the assigned storage group. An information processing apparatus is configured to, when a storage group with data redundancy being lost is detected, make a change in control apparatus assignment for the storage groups in such a manner that a storage group different from the detected storage group is not assigned to a control apparatus with the detected storage group assigned thereto. Subsequently, the information processing apparatus causes the control apparatus to execute a process of restoring the data redundancy of the detected storage group. | 10-03-2013 |
20130311430 | COMPUTER, DATA STORAGE METHOD, AND INFORMATION PROCESSING SYSTEM - A computer includes a memory that stores a program and received data; and a processor that executes an operation by executing the program stored in the memory, the operation including storing the received data into a first database having a first data structure in which reading is performed in a random access manner and writing is performed in a sequential access manner, when the received data is received from a second apparatus is as same as data stored in a first apparatus which has a failure, and copying the received data stored in the first database to a second database having a second data structure in which reading is performed in a sequential access manner and writing is performed in a random access manner. | 11-21-2013 |
20140012816 | EVALUATION APPARATUS, DISTRIBUTED STORAGE SYSTEM, EVALUATION METHOD, AND COMPUTER READABLE RECORDING MEDIUM HAVING STORED THEREIN EVALUATION PROGRAM - An evaluation apparatus includes: a calculation unit configured to calculate the evaluation value of the evaluation target content by using an evaluation value estimation algorithm, based on a count value for the evaluation target content and a sum value of respective count values for the plurality of contents; a verification unit configured to verify whether the sum value of the respective count values for the plurality of contents reaches a predetermined value; and a processing unit configured to reduce the respective count values of the plurality of contents, when the sum value of the respective count values for the plurality of contents reaches the predetermined value, and is capable of detecting a sudden data spike at high speed in the evaluation value estimating algorithm. | 01-09-2014 |
20140146688 | REPLICA DEPLOYMENT METHOD AND RELAY APPARATUS - A first information processing apparatus transmits a message storing a replica of data stored in the first information processing apparatus. The message has an unspecified destination. A first relay apparatus detects a second information processing apparatus provided in a network to which the first relay apparatus belongs. The first relay apparatus selects, as a transfer destination of the message, the second information processing apparatus or a second relay apparatus upon receiving the message. The first relay apparatus transfers the message to the selected transfer destination. The second information processing apparatus stores the replica therein upon receiving the message. | 05-29-2014 |
20140297845 | INFORMATION PROCESSING SYSTEM, COMPUTER-READABLE RECORDING MEDIUM HAVING STORED THEREIN CONTROL PROGRAM FOR INFORMATION PROCESSING DEVICE, AND CONTROL METHOD OF INFORMATION PROCESSING SYSTEM - An information processing system includes a plurality of information processing apparatuses connected to each other, and communication is performed between the plurality of information processing apparatuses. Each of the plurality of information processing apparatuses includes a processor. The processor included in one of the plurality of information processing devices serving as a first information processing device receives, from each of second information processing devices other than the first information processing device, state information regarding each state of the plurality of information processing devices determined by the second information processing devices, determines each state of the plurality of information processing devices, based on the state information received from each of the second information processing devices, and transmits state information for transmission regarding the determined state of each of the plurality of information processing devices to each of the second information processing devices. | 10-02-2014 |
20140297947 | STORAGE SYSTEM, STORAGE APPARATUS, CONTROL METHOD OF STORAGE SYSTEM, AND COMPUTER PRODUCT - A storage system includes a first storage apparatus that stores a first data group selected, based on an access time of each data among plural data; a second storage apparatus that stores a second data group; and a control apparatus that includes a memory unit that stores a Bloom filter in which a property value is registered, and obtained by extracting a property in identification information of each data among the first data group; a processor that is configured to judge whether the property value obtained by extracting the property in the identification information of given data that is to be accessed among the plural data is registered in the Bloom filter; and transmit an access request for the given data to any one among the first storage apparatus and the second storage apparatus, based on results of judgment of whether the property value is registered. | 10-02-2014 |