| 摘要 |
RAID devices equipped with a remote copy function are respectively connected to a global server of a transfer source and an open server of a transfer destination, and the RAID devices are connected to each other by an inter-chassis path. Upon operation start-up, the global server of the transfer source issues a start instruction and session information of remote copy to the transfer-source RAID device, thereby establishing a session of remote copy in which a relay volume of the transfer-source RAID device is serving as a copy source and a relay volume of the transfer-destination RAID device is serving as a copy destination. When data transfer is instructed, the data specified by a data transfer instruction is read out from a global volume, converted by a data conversion unit, and written to a relay buffer area of the relay volume, thereby transferring it via the inter-chassis path through remote copy.
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