Management system and management method

A management method of a computer system comprising:

• multiple storage apparatuses, which, upon receiving a write request for a virtual volume formed of multiple virtual segments, allocate the page to a write-destination virtual segment from a pool formed of multiple pages of multiple logical volumes and write write-target data to the allocated page;
• and a host computer, which sends a data write request to the virtual volume,
• the management method comprising:
• receiving a selection of either a determination-target storage apparatus, which is regarded as a determination target from among the multiple storage apparatuses, or a first storage area, which is regarded as a determination target of a storage area formed of the page of the storage apparatus;
• identifying a first page migration, which is affected in a case where either the determination-target storage apparatus is stopped or the first storage area is blocked, based on logical volume management information for managing, with respect to the logical volume in the computer system, a corresponding relationship between a storage apparatus in which the logical volume resides and a page forming the logical volume, and virtual volume management information for managing, with respect to the virtual volume in the computer system, the corresponding relationship between a virtual segment in the relevant virtual volume and a page allocated to the virtual segment;
• and
• displaying information related to the first page migration.

A computer program executed by a computer for managing a computer system comprising:

• multiple storage apparatuses, which, upon receiving a write request for a virtual volume formed of multiple virtual segments, allocate the page to a write-destination virtual segment from a pool formed of multiple pages of multiple logical volumes and write write-target data to the allocated page;
• and a host computer, which sends a data write request to the virtual volume,
• the computer program causing the computer to:
• receive a selection of either a determination-target storage apparatus, which is regarded as a determination target from among the multiple storage apparatuses, or a first storage area, which is regarded as a determination target of a storage area formed of the page of the storage apparatus;
• identify a first page migration, which is affected in a case where either the determination-target storage apparatus is stopped or the first storage area is blocked, based on logical volume management information for managing, with respect to the logical volume in the computer system, a corresponding relationship between a storage apparatus in which the logical volume resides and a page forming the logical volume, and virtual volume management information for managing, with respect to the virtual volume in the computer system, the corresponding relationship between a virtual segment in the relevant virtual volume and a page allocated to the virtual segment;
• and
• display information related to the first page migration.