Hitachi, Ltd.

Tadashi Numanoi

Naoki Shimada

Hideo Ohata

Tatsundo Aoshima

Kei Takeda

Shuji Fujino

Yusuke Fukuda

Tatsuya Hisatomi

Akira Mineo

Katsutaka Inoue

Tomohiro Kominami

Provided is a method of controlling a computer system which includes a host computer and one or more storage systems coupled to the host computer via a network, wherein the first processor executes an application job which executes data I/O in a logical storage area; the second processor executes a management job which executes the data I/O in the logical storage area; the method comprising: judging whether at lest one of resources of the computer system used for the data I/O of the application job is also used for the data I/O of the executed management job when performance of the application job drops below a predetermined threshold; and displaying information indicating the executed management job when it is judged that at least one of the resources used for the data I/O of the application job is also used for the data I/O of the executed management job.

Method, computer system and management computer for managing performance of a storage network

Provided is a computer system including a host computer, a storage system, and a management computer, in which the storage system receives data I/O request to virtual logical volumes and data I/O request to one or more real logical volumes, each of the virtual logical volumes is allocated to one of one or more pools, storage areas of physical storage systems are allocated to all storage areas defined as the pools, and when a performance problem has occurred in one of the virtual logical volumes, the management computer selects the one of the virtual logical volumes, and selects a pool other than the pool to which the selected virtual logical volume is allocated and the real logical volumes as a migration destination of the selected virtual logical volume, to thereby prevent a performance problem from being caused by interference among the virtual logical volumes sharing the pool.

Computer system for determining and displaying performance problems from first storage devices and based on the problems, selecting a migration destination to other secondary storage devices that are operated independently thereof, from the first storage devices

The present invention detects the occurrence of a bottleneck on the basis of the states of respective elements of the storage system and presents a measure for eliminating the bottleneck before actually changing the constitution of the storage system. The host element Nis connected to the element Nin the storage device via the elements NNand N(S). Element Nis a device file or the like, for example. Element Nis a logical volume or the like, for example. When a bottleneck occurs in the intermediate element N(S), the bottleneck is detected (S) on the basis of collected information on the respective elements of the storage system (S). A measure that is effective in eliminating the bottleneck is then reviewed and selected (SS). This measure manipulates any of the elements Nand Nor Nand Nlocated at the two ends of the path.

Storage system and a method for dissolving fault of a storage system

Use situations of storage devices utilizing a storage area network (SAN) are predicted and the devices are automatically managed on the basis of the predicted results. To manage the devices utilizing the SAN, there is established the policy prescribing actions each executed when some object to be judged satisfies some condition with regard to storage devices. Information concerning use situations of the devices is collected and a value of an object to be judged of the policy is calculated based on collected information to judge whether the value of the object to be judged satisfies a condition of the policy. When the condition is satisfied, the action of the policy is executed. The objects to be judged of the policy may be actual result values in the past, current values or prediction values in the future relative to use capacity of storages, the number of I/O operations of disk or fragmentation.

Storage device management method, system and program

A performance information monitoring method using computers includes the steps of accepting information on a group relating to a first computer in the first computer; storing the accepted group information in a storage in the first computer; accepting performance information from a second computer in the first computer; comparing performance information of the second computer previously stored in a storage with the performance information received from the second computer in the first computer; judging whether or not the second computer is included in the information of the group when finding a difference between the performance information in the comparison result; and transmitting an instruction to the computer included in the group information to change a performance information collection interval according to the judgment result.

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Yokohama, Japan

Tadashi Numanoi