Patent ID: 9513839
Filing Date: 2016-12-06
CPC Classification: G06F,G09G

Claim Text:
1. A management system comprising: a communication interface device connected to a computer system that includes a remote copy system for performing asynchronous remote copy; a storage resource; and a processor connected to the communication interface device and the storage resource, wherein the remote copy system comprises a primary storage system, and a secondary storage system connected to the primary storage system, the primary storage system comprises a plurality of primary volumes, each primary volume into which data is written, and a primary journal storage area into which is written a journal comprising the data written to the respective primary volume, and transfers the journal that has been written to the primary journal storage area to the secondary storage system, and the secondary storage system comprises a secondary journal storage area into which the journal from the primary storage system is written, and a plurality of secondary volumes corresponding to the plurality of primary volumes, each respective secondary volume into which is written the respective data inside the journal being stored in the secondary journal storage area, the computer system further comprises a host computer that sends a write request specifying a primary volume, the storage resource stores management information that includes a plurality of delay durations that respectively correspond to a plurality of times, and a plurality of metric values that respectively correspond to the plurality of times for the respective primary volume, for each delay duration, a start time is either a time at which data was stored in the respective primary volume, or a time at which a journal comprising this data was stored in the primary journal storage area, and an end time is either a time at which this journal was stored in the secondary journal storage area, or a time at which data inside this journal was stored in the respective secondary volume, and the processor is configured to: refer to the management information; identify a primary volume that corresponds to a metric value fluctuation for which the relationship to a delay duration fluctuation meets a predetermined condition; display, based on the management information, a delay duration graph representing a fluctuation in delay duration associated with the passage of time and an average-of-writing-quantity graph representing a fluctuation in average of writing quantity associated with the passage of time, in a mode that enables comparison between the two graphs, the average of writing quantity being an amount of data written to the primary volume per write request; and display a metric value graph in a mode that enables comparison with the delay duration graph, only for the identified primary volume of the plurality of primary volumes.