摘要:
After a host creates a memory area in an external storage device, a setting is made such that the host can manage the memory area in the external storage device, so as to prevent an access to the storage device by another host to protect data therein. A second storage device creates a memory area therein, an iSNS server registers a lower DD between first and second storage devices, the first storage device makes a mapping-setting registration for names of a memory area for use and an external memory area, and the iSNS server registers an upper DD between the host and the first storage device, and the host mounts a memory area of the first storage device.
摘要:
After a host creates a memory area in an external storage device, a setting is made such that the host can manage the memory area in the external storage device, so as to prevent an access to the storage device by another host to protect data therein. A second storage device creates a memory area therein, an iSNS server registers a lower DD between first and second storage devices, the first storage device makes a mapping-setting registration for names of a memory area for use and an external memory area, and the iSNS server registers an upper DD between the host and the first storage device, and the host mounts a memory area of the first storage device.
摘要:
To provide a data copy capability of copying data between storage devices while maintaining the data integrity even if the copy process is interrupted in a hierarchical connection arrangement of storage devices. A computer system includes a computer 100 and a plurality of storage devices 140, 160 connected to the computer 100 via a network, in which one storage device 140 has a first storage area 151, allows the computer 100 to access a second storage area 170 in one or more other storage devices 160 via the storage device 140, allocates the first storage area for copy of data from the second storage area 170 and copies data from the second storage area 170 into a first storage area 150.
摘要:
In a storage system having a function of acquiring update history information in correspondence with a write operation from a host, update data according to the amount of data written will become enormous. Thus, there is a problem in that long-term backup and data management using update history information is not possible. A management computer defines a service level according to time progress of data, and stores and manages update history information according to the service level in the respective stages. The management computer manages the update history information, and partially migrates update data from a certain storage system to another storage system according to the service level required in the data. The management computer also restores data in the storage system to which the update data was migrated.
摘要:
Provided is a computer system capable of reducing a load on a virtualization apparatus during backup processing, including: at least one first storage system; at least one second storage system; a virtualization apparatus; at least one host computer; a backup unit; and a data transmission unit having access to the first storage system, in which, when requested to take a backup of the virtualized data storage area, the backup unit obtains mapping information which indicates association between the virtualized data storage area and the first data storage area where data requested to be written in the virtualized data storage area is stored, and identifies, based on the obtained mapping information, the first data storage area corresponding to the virtualized data storage area that is requested to be backed up, and in which the data transmission unit transfers, to the storage unit of the second storage system, a copy of data stored in the first data storage area that is identified by the backup unit.
摘要:
A management computer includes a management unit for managing the load of the virtual storage extent and the threshold value thereof in the virtual storage subsystems for each prescribed period; and a migration command unit for commanding, when the load of the virtual storage extent managed by the management unit exceeds the threshold value and with the virtual storage extent as the virtual storage extent to be migrated, the migration of the virtual storage extent to be migrated to another virtual storage subsystem that is mutually communicable with a host computer provided with the virtual storage extent to be migrated and a storage subsystem having the storage extent associated with the virtual storage extent to be migrated; and wherein the virtual storage subsystem includes a migration unit for migrating the virtual storage extent to be migrated commanded by the migration command unit to the other virtual storage subsystem.
摘要:
A computer system having a work computer, first storage systems, and second storage systems also has a network, a network routing device, and a management computer. Upon receipt of the update data from the work computer, the first storage system stores the update data in a first storage volume and stores the update data in a second storage volume until the update data is transferred to the second storage system. The management computer obtains an used capacity of the second storage volume of each of the first storage systems and controls the routing of the data by the network routing device based on the obtained used capacity to prevent the cache of each of the storage systems from being overflown.
摘要:
A management computer includes a management unit for managing the load of the virtual storage extent and the threshold value thereof in the virtual storage subsystems for each prescribed period; and a migration command unit for commanding, when the load of the virtual storage extent managed by the management unit exceeds the threshold value and with the virtual storage extent as the virtual storage extent to be migrated, the migration of the virtual storage extent to be migrated to another virtual storage subsystem that is mutually communicable with a host computer provided with the virtual storage extent to be migrated and a storage subsystem having the storage extent associated with the virtual storage extent to be migrated; and wherein the virtual storage subsystem includes a migration unit for migrating the virtual storage extent to be migrated commanded by the migration command unit to the other virtual storage subsystem.
摘要:
In a storage system having a function of acquiring update history information in correspondence with a write operation from a host, update data according to the amount of data written will become enormous. Thus, there is a problem in that long-term backup and data management using update history information is not possible. A management computer defines a service level according to time progress of data, and stores and manages update history information according to the service level in the respective stages. The management computer manages the update history Information, and partially migrates update data from a certain storage system to another storage system according to the service level required in the data. The management computer also restores data in the storage system to which the update data was migrated.
摘要:
In remote data replication between storage systems, there are cases where the storage extent capacity used as the temporary storage extent in the storage system will incur waste. In a system having a management computer, a host computer, a first storage system, and a second storage system, when maintaining the replicated data of the first storage system in the second storage system via remote data replication, a change or the like in the traffic from the host computer to the first storage system is monitored, and the management computer instructs the storage system to switch the remote data replication mode in accordance with such traffic.