Patent ID: 11868630
Assignee: HITACHI, LTD.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 11:
12. The storage system according to claim 8,
wherein, in a case where the configuration change is requested that involves removing the second node from the storage system, following processes are executed:
a process in which the controller of the two controllers of the first node activated before being requested removing of the second node activates the deactivated controller of the first node;
a process in which the at least one other controller of the second node, for which set the redundancy group is set, saves data stored in a cache memory of the at least one other controller;
a process in which the controller of the two controllers of the first node activated before being requested the removing of the second node switches from the second management information to the first management information; and
a process in which the at least one other controller of the second node deactivates the at least one other controller for which the redundancy group is set.