Abstract: A treatment method is provided that includes an introduction step of introducing a transparent stent into a vitreous body of an eyeball, an expansion step of causing the stent to expansively deform inside the vitreous body to bring a retina into contact with a retinal pigment epithelium, and a placement step of placing the stent in the vitreous body with the stent keeping the retina in contact with the retinal pigment epithelium.

Abstract: A treatment method is provided that includes an introduction step of introducing a transparent stent into a vitreous body of an eyeball, an expansion step of causing the stent to expansively deform inside the vitreous body to bring a retina into contact with a retinal pigment epithelium, and a placement step of placing the stent in the vitreous body with the stent keeping the retina in contact with the retinal pigment epithelium.

Abstract: 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.

Abstract: A computer system for preventing data loss that includes: a first storage system having a data storage extent for storing data sent from a host computer; a second storage system having at least one actual replicated data storage extent associated with the data storage extent; an archive appliance having a storage medium associated with the replicated data storage extent in the second storage system; and a data copy unit for controlling copy processing for reading data from the data storage extent in the first storage system and writing the read data to a first actual replicated data storage extent in the second storage system in accordance with specific configuration information. The system also has a connection switching unit for changing the specific configuration information so that a second actual replicated data storage extent, instead of the first actual replicated data storage extent, is associated with the data storage extent.

Abstract: 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.

Abstract: It has been impossible in prior art to copy every piece of data that is stored in a virtual volume. A management computer of this invention receives a copy request that designates a real storage area as a copy source, selects a virtual storage area that is associated with plural real storage areas as a copy destination virtual storage area, and judges whether or not a copy source virtual storage area and the copy destination virtual storage area are allocated to real storage areas. Based on a result of the judging, the management computer gives an instruction to copy data that is stored in the copy source real storage area to a copy destination real storage area, and keeps information about a replication relation between the copy source real storage area and the copy destination real storage area on which the data copy has been performed.

Abstract: Provided is a computer system including a plurality of data storage apparatus and manages a bandwidth of a data storage apparatus according to an attribute of a storage volume. A storage system includes an interface for processing access to the storage volume from a host computer, and a control unit for controlling allocation of the storage volume to the host computer. A management computer transmits a request of setting a bandwidth to be accessed by the host computer via the interface in the storage volume to the storage system. The control unit sets the bandwidth corresponding to a ratio of processing access to each storage volume in the storage system based on the request from the management computer, and allocates the storage volume having the bandwidth requested by the host computer set therein to the host computer to be accessed by the host computer to the allocated storage volume.

Abstract: 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.

Abstract: The present invention aims at preventing loss of the most recent data even if backup processing ends abnormally. A computer system includes: a first storage system having a data storage extent for storing data sent from a host computer; a second storage system having at least one actual replicated data storage extent associated with the data storage extent; an archive appliance having a storage medium associated with the replicated data storage extent in the second storage system; a data copy unit for controlling copy processing for reading data from the data storage extent in the first storage system and writing the read data to a first actual replicated data storage extent in the second storage system in accordance with specific configuration information; and a connection switching unit for changing the specific configuration information so that a second actual replicated data storage extent, instead of the first actual replicated data storage extent, is associated with the data storage extent.

Abstract: Provided is a computer system including a plurality of data storage apparatus and manages a bandwidth of a data storage apparatus according to an attribute of a storage volume. A storage system includes an interface for processing access to the storage volume from a host computer, and a control unit for controlling allocation of the storage volume to the host computer. A management computer transmits a request of setting a bandwidth to be accessed by the host computer via the interface in the storage volume to the storage system. The control unit sets the bandwidth corresponding to a ratio of processing access to each storage volume in the storage system based on the request from the management computer, and allocates the storage volume having the bandwidth requested by the host computer set therein to the host computer to be accessed by the host computer to the allocated storage volume.

Abstract: 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.

Abstract: It has been impossible in prior art to copy every piece of data that is stored in a virtual volume. A management computer of this invention receives a copy request that designates a real storage area as a copy source, selects a virtual storage area that is associated with plural real storage areas as a copy destination virtual storage area, and judges whether or not a copy source virtual storage area and the copy destination virtual storage area are allocated to real storage areas. Based on a result of the judging, the management computer gives an instruction to copy data that is stored in the copy source real storage area to a copy destination real storage area, and keeps information about a replication relation between the copy source real storage area and the copy destination real storage area on which the data copy has been performed.

Abstract: 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.

Abstract: 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.

Abstract: 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.