| 摘要 |
To provide a method of collecting and storing storage network performance information that allows tracking of the cause of application performance deterioration. It is automatically judged whether or not performance information collected, to be stored, from components of a storage network including a host server and a storage system has a possibility of ever being used in a search for the cause of application performance deterioration, and the degree of importance of performance information is determined based on the result of the judgment. The preservation period of performance information that is high in degree of importance is set long, while a short preservation period is set to performance information of low degree of importance. After the preservation period set to the respective performance information expires, the corresponding performance information is deleted.
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