摘要:
The storage apparatus comprises a storage unit for storing data to be read and written by the host computer; and a control unit for controlling the writing of data into the storage unit, wherein the control unit deletes an entity of the data replicated to the archive apparatus from the storage unit and stubs the data; calls the stubbed data from the archive apparatus and temporarily stores the entity of the data according to a request from the host apparatus; and if an area where the entity of the stubbed data is stored in the storage unit among data storage areas of the storage unit is a predetermined capacity or less, migrates stub information concerning the stubbed data to a storage unit of another storage apparatus.
摘要:
A remote file server managing a remote storage device and a local file server managing a local storage device are coupled to a communication network (e.g. the Internet). The local file server (A) replicates a file in the local storage device to the remote file server and, (B) if a first condition is satisfied, manages the replicated file which is the file from which the data is replicated as a migration target file. The local file server, even if the (B) is completed, does not delete the migration target file from the local storage device and, if the second condition is satisfied, deletes the migration target file from the local storage device.
摘要:
An object is to enable efficient shredding of recording media in association with migration. An information processing device (a server device 3) receives a data input/output request in a unit of a file transmitted from a client device 2, and performs writing and reading of data to and from a storage system 10 having a recording medium (hard disk drive 171) in which a file entity specified in the received data input/output request is stored in units of data blocks. The information processing device is communicatively coupled to a different storage device which is a migration destination of data. In the case where after the migration of certain data, different data is written in a data block of the certain data in an overlapped manner, the data block is not shredded if the data block is already shredded related to either of the overlapped certain and the different data after the migration.
摘要:
Proposed are a computing system and a data management method for improving the usage efficiency of logical volumes without lowering the response performance In a computing system that includes a first storage apparatus in which first and second storage volumes are configured, a file storage apparatus for controlling the first logical volume, a second storage apparatus, and an archive apparatus for controlling the second storage apparatus, the first storage apparatus acquires a snapshot of the first logical volume at regular or irregular intervals and stores differential data in the second logical volume, specifies a file for which the consumption amount of the second logical volume exceeds a predetermined threshold, causes the first storage apparatus to acquire a snapshot of the specified file, and if a read request to read the file is supplied, generates the file on the basis of data stored in the first and second logical volumes.
摘要:
Specifically, provided is a computer system, and its management method, including multiple nodes for providing to a host system a storage area to be used for reading and writing data, and respectively acquiring a snapshot at a pre-set time, and which configures a node group from a part or all of the nodes among the multiple nodes and makes data redundant in node units in the node group. With the foregoing computer system and its management method, an access log is acquired from the respective nodes configuring the node group, and the usage of the snapshot in the node group is determined based on the acquired access log of the respective nodes, and the acquisition time of the snapshot is changed in a part or all of the nodes among the nodes configuring the node group based on the determination result.
摘要:
A server apparatus performs data I/O processing on a P-VOL in response to a request from a client apparatus and includes a file system which receives data write and read requests in units of files from the client apparatus. The server apparatus stores, into a D-VOL, differential data generated by updating the P-VOL, and manages a snapshot management table wherein a block address of the D-VOL storing the acquired differential data is registered. When a remaining capacity of a storage area of the D-VOL becomes equal to or less than a predetermined threshold value, the server apparatus enables a block of the D-VOL which had stored therein the differential data on a certain predetermined file, to be used as a storage area for newly acquired differential data.
摘要:
An information processing apparatus includes a remote copying processing part 214 copying, at predetermined time intervals, difference data of a D-VOL 72 onto a different D-VOL 72 via a communication interface; and a failover processing part 215 acquiring the number of other auxiliary volumes 74 provided to be added to the different D-VOL 72 as a new D-VOL 72 when the copying of the difference data of the D-VOL 72 onto the different D-VOL 72 is complete, comparing the number of other auxiliary volumes 74 with the number of auxiliary volumes 74 included in itself, and performing a failover process of switching a function of a copy source of a data copying process by the data copying processing part to a function of a copy destination thereof when the number of other auxiliary volumes 74 is larger than the number of that in itself by a predetermined value or more.
摘要:
A computer migrates to the same remote controller, from among a plurality of remote virtual computers at a remote site, two or more remote virtual computers belonging to a group configured from remote virtual computers with similar remote copy patterns. In the remote controller, these two or more remote virtual computers and remote virtual computers with dissimilar remote copy patterns do not reside.
摘要:
A storage controller comprises a creation module that creates a logical volume, a management module that manages a plurality of types of logical units inside a storage system, a measurement module that measures an access characteristic, which is a characteristic related to an access to the logical volume, a decision module that decides the type of a logical unit to be allocated to the logical volume based on the measured access characteristic, and an allocation module that allocates to the logical volume a logical unit, of the plurality of types of logical units, of the type decided by the decision module.
摘要:
A disk array system includes storage devices, a storage device control unit, a connection unit being connected with the storage device control unit, channel control units, a shared memory, and a cache memory. Each channel control unit includes a first processor of converting file data, received through a local area network outside of the disk array system to which the channel control units belongs, into block data and requesting storage of the converted data in the plurality of storage devices and a second processor of transferring the block data to the storage devices through the connection unit and the storage device control unit in response to a request given from the first processor and is connected with the connection unit and the local area network.