Abstract:
Provided is a storage subsystem capable of inhibiting the deterioration in system performance to a minimum while improving reliability and availability. This storage subsystem includes a first controller for controlling multiple drive units connected via multiple first switch devices, and a second controller for controlling the multiple drive units connected via multiple second switch devices associated with the multiple first switch devices. This storage subsystem also includes a connection path that mutually connects the multiple first switch devices and the corresponding multiple second switch devices. When the storage [sub]system detects the occurrence of a failure, it identifies the fault site in the connection path, and changes the connection configuration of the switch device so as to circumvent the fault site.
Abstract:
A power device of the present invention makes a plurality of DC/DC converters redundant, and supplies power individually to a plurality of disk drives. Each first DC/DC converter is respectively made correspondent to a subgroup (7A, 7B). One first DC/DC converter (A1) is connected to the disk drives (1) respectively inside one subgroup (7A), and the other first DC/DC converter (A2) is connected to the disk drives inside the other subgroup (7B). A second DC/DC converter (B1, B2) is made correspondent to all of the subgroups (7A, 7B). Second DC/DC converters respectively supply direct-current power to any one disk drive of the disk drives in the subgroups.
Abstract:
Provided is a storage subsystem capable of inhibiting the deterioration in system performance to a minimum while improving reliability and availability. This storage subsystem includes a first controller for controlling multiple drive units connected via multiple first switch devices, and a second controller for controlling the multiple drive units connected via multiple second switch devices associated with the multiple first switch devices. This storage subsystem also includes a connection path that mutually connects the multiple first switch devices and the corresponding multiple second switch devices. When the storage [sub]system detects the occurrence of a failure, it identifies the fault site in the connection path, and changes the connection configuration of the switch device so as to circumvent the fault site.
Abstract:
A power device of the present invention makes a plurality of DC/DC converters redundant, and supplies power individually to a plurality of disk drives. Each first DC/DC converter is respectively made correspondent to a subgroup (7A, 7B). One first DC/DC converter (A1) is connected to the disk drives (1) respectively inside one subgroup (7A), and the other first DC/DC converter (A2) is connected to the disk drives inside the other subgroup (7B). A second DC/DC converter (B1, B2) is made correspondent to all of the subgroups (7A, 7B). Second DC/DC converters respectively supply direct-current power to any one disk drive of the disk drives in the subgroups.