STORAGE SYSTEM, STORAGE DEVICE, AND DATA TRANSFER METHOD

摘要

A storage system capable of realizing off-load data copy among storage subsystems constituting an HA pair configuration is provided. Therefore, in an HA pair configuration where a first volume of a first storage subsystem and a second volume of a second storage subsystem respectively respond a same virtual ID to the host, when the first or the second storage subsystem receives an instruction of off-load data copy specifying a virtual ID as the copy destination from the host computer, either a first volume or a second volume is selected as a copy source volume according to a position of a copy destination volume, and data is copied from the selected copy source volume to the copy destination volume.

主权项

1. A storage system connected to a host computer, wherein
the storage system comprises a first storage subsystem and a second storage subsystem; a first volume of the first storage subsystem and a second volume of the second storage subsystem in which data of the first volume is duplicated respectively respond a same virtual ID to the host, and constitutes an HA pair; when the first storage subsystem or the second storage subsystem receives an instruction of an off-load data copy specifying a virtual ID as a copy source from the host computer: the system selects either the first volume or the second volume as a copy source volume corresponding to the storage subsystem in which a copy destination volume exists, and copies data from the selected copy source volume to the copy destination volume.