| 摘要 |
PROBLEM TO BE SOLVED: To reduce the load on a storage system controller for purchasing an exchange PASS software or stopping and starting a server, by realizing the exchange of a MICRO program without stopping the server by shortening the time when a storage port cannot respond. SOLUTION: In the storage under SAN (storage area network) environment, more than one spare port is set. When the MICRO program of the port provided to the storage is exchanged, attributive information belonging to the port is copied to the spare port and the connection to the server and the storage is switched to the spare port.
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