摘要:
Provided is a storage system capable of holding data by associating main data for long-term retention with sub data for maintaining its readability. The storage system: stores first data in a first location within a storage area upon reception of a storage request for the first data with a first file identifier being specified; holds information for associating the first file identifier, the first location, a retention period of the data, and first version information with one another; stores second data in a second location within the storage area upon reception of a storage request for the second data with the first file identifier and second version information being specified; holds information for associating the first file identifier, the second location, and the second version information with one another; and inhibits the first data and the second data from being changed before elapse of the retention period of the data.
摘要:
A computer includes a management computer connected to a host computer, first and second primary storage systems, first and second secondary storage systems, a primary external storage system connected to the first and second primary storage systems and a secondary external storage system connected to the first and second secondary storage systems. The management computer controls to start copying as processing for storing copied data in the second storage area into a fourth storage area in response to a command for starting processing for storing copied data in the first storage area into a third storage area.
摘要:
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’.
摘要:
A computer system including a first storage system connected to a first host computer, a second storage system connected to a second host computer and a third storage system connected to the first and second storage systems. The second storage system sets transfer setting before an occurrence of a failure, the transfer setting being provided with a dedicated storage area to be used for transferring data to the third storage system by asynchronous copy in response to a failure at the first host computer. Before the start of data transfer between the second storage system and third storage system to be executed after an occurrence of the failure, the second storage system checks the dedicated storage area, data transfer line and transfer setting information, and if an abnormal state is detected, this abnormal state is reported to the host computer as information attached to the transfer setting.
摘要:
Provided is a storage system capable of holding data by associating main data for long-term retention with sub data for maintaining its readability. The storage system: stores first data in a first location within a storage area upon reception of a storage request for the first data with a first file identifier being specified; holds information for associating the first file identifier, the first location, a retention period of the data, and first version information with one another; stores second data in a second location within the storage area upon reception of a storage request for the second data with the first file identifier and second version information being specified; holds information for associating the first file identifier, the second location, and the second version information with one another; and inhibits the first data and the second data from being changed before elapse of the retention period of the data.
摘要:
To manage the configuration of a data archiving system without increasing the load on the data archiving system while keeping the performance of computers and the load on storage subsystems balanced, there is provided a computer system, including: a plurality of data archiving servers; a storage subsystem which provides storage extents to the plurality of data archiving servers; and a management computer. The management computer manages data archiving server performance management information, which holds information about performance of the plurality of data archiving servers, and storage utilization information, which holds information about load on the storage extents. The management computer changes the association between the data archiving storage extents and the storage extents based on a data archiving server performance management information and a storage utilization information.
摘要:
Provided is a computer system management method capable of preventing a loop of pairs from being formed upon remote copy pair formation. The method of controlling formation of a remote copy pair of logical volumes in a computer system including a plurality of logical volumes includes: receiving a request to form a remote copy pair; judging whether or not a loop of remote copy pairs will be formed by executing the requested remote copy pair formation; and executing the requested remote copy pair formation when it is judged that no loop of copy pairs will be formed.
摘要:
In a computer system, to enable a second computer to take over control of copying of data within the computer system, from a first computer that normally controls copying of data.The second computer selects from a plurality of storage systems a storage system to be accessed in order to acquire sub system pair information, and acquires sub system pair information from the selected storage system. Based on the acquired sub system pair information, the second computer generates system pair information that includes copy pair information relating to a plurality of storage areas belonging to the plurality of storage systems. The second computer initially selects a storage system directly linked to the second computer, and subsequently sequentially selects a storage system based on the acquired sub system pair information.
摘要:
A controller sets a specified time which is a time that specifies a time in the future relative to the current time for all of one or more secondary storage systems. The respective secondary storage systems have a logical volume for backup (BVOL), and set a backup preparation end state when a journal up to a specified time has been established, and report information showing a preparation end state to the controller. The controller issues a backup command to all of the one or more secondary storage systems when information showing a preparation end state is reported from all of the one or more secondary storage systems.
摘要:
Dump information acquiring and system recovery methods for a computer system using a virtual memory. The computer system has a plurality of external storage units normally used as a paging device unit for holding the contents of the virtual memory to be paged out. When fault occurs, a program for acquiring dump information outputs the contents of the main storage to a dump file. The identifier of the external storage unit set to definition information defining the external storage unit is changed from the identifier of the external storage unit to the identifier of another external storage unit. Thereafter, the computer system is restarted. The contents of the virtual memory held in the paging device unit at the time of fault output to the dump file.