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VOLUME MANAGEMENT APPARATUS, VOLUME MANAGEMENT METHOD, AND VOLUME MANAGEMENT PROGRAM
VOLUME MANAGEMENT APPARATUS, VOLUME MANAGEMENT METHOD, AND VOLUME MANAGEMENT PROGRAM
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机译:音量管理装置,音量管理方法和音量管理程序
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摘要
A storage system which stores a plurality of volumes and performs an I/O process on the volume includes a processor. The volume includes a first volume and a second volume which is copied from the first volume by snapshot. In a case where a write request is received, the processor determines whether a volume of a copy source related to a target volume of the write request is a volume of which a storage region is a valid region where a data amount reduction process is applied. Depending on a case where the volume of the copy source is a volume of which the storage region is a valid region or a case where the volume of the copy source is a volume of which the storage region is not a valid region, the processor switches and performs a process of creating the second volume related to the snapshot.
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