| 摘要 |
PROBLEM TO BE SOLVED: To update a program in a storage controller while processing an access request without placing a load on a host computer. SOLUTION: An updating control part 8 is started up in the controller of an updating object, when the program is indicated to be updated from a control terminal 6. The updating control part 8 updates the program stored in a program memory 2A4 or a boot disc 4A, after connecting a host I/F part 2A1 to an access request processing part 2B3 in the other controller 2B by a connection control part 7. When the updating is finished, the updating control part 8 connects again the host I/F part 2A1 to an access request processing part 2A3 by the connection control part 7. The access request processing part 2B3 can process continuously the access request from a host computer 5 in stead of the access request processing part 2A3, because storage contents of respective data memories 2A5, 2B5 are synchronized. COPYRIGHT: (C)2007,JPO&INPIT
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