Abstract: A file server achieving sufficient power-saving effect is provided. The file server is capable of operating an on-line storage medium (in a state in which reading/writing can be started immediately in response to a file read/write request) and an off-line storage medium (which has to be started up upon receiving a read/write request). Upon reception of a stream file write request, the file server's processing unit acquires bit rate information from the stream file, calculates the file's splitting position from the bit rate information and startup time of the off-line storage medium, and stores a first part (up to the splitting position) in the on-line storage medium while storing the remaining second part in the off-line storage medium. Upon reception of a stream file read request, the processing unit reads out the first part while starting up the off-line storage medium and reading out the second part.

Abstract: In a storage network including at least a computer system, at least an external storage and at least a network system for communication of input/output data between the computer system and the external storage, a method of collecting the performance data on the network system and the software operated on the network system, in which the range or degree of data collection is automatically adjusted as required based on the performance data collected.

Abstract: When the application I/O performance problem is solved, the I/O amount from the application is increased. In the conventional technique, no consideration has been taken on the affect of the increase of the application I/O performance to other applications. A resource whose I/O load is reduced by setting modification of a storage subsystem is specified and the application using this resource is specified as an application whose I/O processing amount may be increased. Furthermore, the resource used by the specified application and another application using this resource are specified as a resource and an application whose I/O processing performance may be lowered by the setting modification.

Abstract: A performance information display method using a computer, includes the steps, in the computer, of reading out information data of a storage device previously stored in a storage device and information data of a plurality of devices utilizing the storage device, displaying an identifier of the storage device and identifiers of a plurality of devices utilizing the storage device on a screen on the basis of the information data read out, accepting a command to select the displayed identifier of the storage device, and displaying performance information data of the devices utilizing the selected storage device in association on the basis of the accepted command and the information data read out.

Abstract: In a storage network including at least a computer system, at least an external storage and at least a network system for communication of input/output data between the computer system and the external storage, a method of collecting the performance data on the network system and the software operated on the network system, in which the range or degree of data collection is automatically adjusted as required based on the performance data collected.

Abstract: The virtual volume is a virtual logical volume that conforms to Thin Provisioning, and is a logical volume configured from a plurality of virtual areas and used by a plurality of applications. In a case where the storage apparatus receives a write request comprising write-destination information for identifying a write-destination virtual area in the virtual volume, and, in addition, the write-destination virtual area is an unallocated virtual area, the storage apparatus selects a medium, which corresponds to the write to the write-destination virtual area and/or the identification information of the source of this write, from a plurality of media, which have different performances and which are each configured from two or more real areas, and allocates a real area from the selected medium to the write-destination virtual area.

Abstract: When the application I/O performance problem is solved, the I/O amount from the application is increased. In the conventional technique, no consideration has been taken on the affect of the increase of the application I/O performance to other applications. A resource whose I/O load is reduced by setting modification of a storage subsystem is specified and the application using this resource is specified as an application whose I/O processing amount may be increased. Furthermore, the resource used by the specified application and another application using this resource are specified as a resource and an application whose I/O processing performance may be lowered by the setting modification.

Abstract: A computer system having a management computer, a storage system including a plurality of RAID groups and a plurality of ports used for accessing storage areas in the plurality of RAID groups, and a plurality of computers coupled to the storage system using computer volumes, each of the computer volumes being configured by one of the RAID groups and accessed via one of the ports. A management computer executes to: receive computer performance information from the plurality of computers, receive resource information indicating a resource of the storage system, the resource being one of the plurality of RAID groups or one of the plurality of ports, and display a part of the computer performance information, which is performance information related to a part of the plurality of computers using a part of the computer volumes related to the resource of the storage system indicated by the resource information.

Abstract: According to the present invention, it is possible to rearrange an arrangement unit on an appropriate storage device at a more appropriate timing in a complex computer system.

Abstract: A method for rearranging a logical volume including arranging a logical volume rearranging program on a particular server and using the logical volume rearranging program to acquire server/storage mapping information from each server and performance information from each storage subsystem. Moreover, the logical volume rearranging program acquires request I/O performance and a rearranging rule for each application set by a user. Furthermore, the logical volume rearranging program determines a destination by using the logical volume rearranging destination parity group specified by the user according to the aforementioned information, and rearranges the logical volume according to the storage subsystem performance and the request I/O performance of each application.

Abstract: A method for rearranging a logical volume including arranging a logical volume rearranging program on a particular server and using the logical volume rearranging program to acquire server/storage mapping information from each server and performance information from each storage subsystem. Moreover, the logical volume rearranging program acquires request I/O performance and a rearranging rule for each application set by a user. Furthermore, the logical volume rearranging program determines a destination by using the logical volume rearranging destination parity group specified by the user according to the aforementioned information, and rearranges the logical volume according to the storage subsystem performance and the request I/O performance of each application.

Abstract: The management system identifies a server level virtual volume corresponding to a storage level pool on the basis of storage management information and server management information, and displays information relating to the correspondence between the storage level pool and the server level virtual volume. The storage management information represents correspondence between a storage level virtual volume to which a portion of an area is allocated from the storage level pool by thin provisioning technology at the storage level, and the storage level pool. The server management information represents correspondence between a server level virtual volume to which a portion of an area is allocated from the storage level virtual volume belonging to a server level pool by thin provisioning technology at the server level, and the storage level virtual volume.

Abstract: When the application I/O performance problem is solved, the I/O amount from the application is increased. In the conventional technique, no consideration has been taken on the affect of the increase of the application I/O performance to other applications. A resource whose I/O load is reduced by setting modification of a storage subsystem is specified and the application using this resource is specified as an application whose I/O processing amount may be increased. Furthermore, the resource used by the specified application and another application using this resource are specified as a resource and an application whose I/O processing performance may be lowered by the setting modification.

Abstract: When the application I/O performance problem is solved, the I/O amount from the application is increased. In the conventional technique, no consideration has been taken on the affect of the increase of the application I/O performance to other applications. A resource whose I/O load is reduced by setting modification of a storage subsystem is specified and the application using this resource is specified as an application whose I/O processing amount may be increased. Furthermore, the resource used by the specified application and another application using this resource are specified as a resource and an application whose I/O processing performance may be lowered by the setting modification.

Abstract: A file server achieving sufficient power-saving effect is provided. The file server is capable of operating an on-line storage medium (in a state in which reading/writing can be started immediately in response to a file read/write request) and an off-line storage medium (which has to be started up upon receiving a read/write request). Upon reception of a stream file write request, the file server's processing unit acquires bit rate information from the stream file, calculates the file's splitting position from the bit rate information and startup time of the off-line storage medium, and stores a first part (up to the splitting position) in the on-line storage medium while storing the remaining second part in the off-line storage medium. Upon reception of a stream file read request, the processing unit reads out the first part while starting up the off-line storage medium and reading out the second part.

Abstract: A method for moving a virtual machine is provided which considers an input/output between array groups and virtual machines after being moved. The computer system includes a physical server executing the virtual machines, a storage device having array groups, and a management server that manages a link between the virtual machines and the array groups. The computer system is characterized in that an estimated I/O volume of the virtual machine after being moved is calculated and that, if the estimated I/O volume exceeds the maximum I/O volume of the array group connected to the moved virtual machine, a search is made to find an array group whose maximum I/O volume is smaller than the estimated I/O volume.

Abstract: A performance information display method using a computer, includes the steps, in the computer, of reading out information data of a storage device previously stored in a storage device and information data of a plurality of devices utilizing the storage device, displaying an identifier of the storage device and identifiers of a plurality of devices utilizing the storage device on a screen on the basis of the information data read out, accepting a command to select the displayed identifier of the storage device, and displaying performance information data of the devices utilizing the selected storage device in association on the basis of the accepted command and the information data read out.

Abstract: In a storage network including at least a computer system, at least an external storage and at least a network system for communication of input/output data between the computer system and the external storage, a method of collecting the performance data on the network system and the software operated on the network system, in which the range or degree of data collection is automatically adjusted as required based on the performance data collected.

Abstract: A performance information display method using a computer, includes the steps, in the computer, of reading out information data of a storage device previously stored in a storage device and information data of a plurality of devices utilizing the storage device, displaying an identifier of the storage device and identifiers of a plurality of devices utilizing the storage device on a screen on the basis of the information data read out, accepting a command to select the displayed identifier of the storage device, and displaying performance information data of the devices utilizing the selected storage device in association on the basis of the accepted command and the information data read out.

Abstract: A CPU of a performance management server, upon receipt of a request from a keyboard or a mouse to newly assign an application to a specified application server, acquires an I/O path between the requested application server and a storage subsystem combined with the application server from the configuration information managed by the internal database of the performance management server, and based on the performance information managed by the database in the performance management server, an I/O path having the performance information satisfying the designated conditions is extracted from the acquired I/O paths and displayed as a candidate path on a display unit.