US 11,704,208 B2
Storage system and information processing method
Shinya Miyata, Kawasaki (JP)
Assigned to FUJITSU LIMITED, Kawasaki (JP)
Filed by FUJITSU LIMITED, Kawasaki (JP)
Filed on Jan. 20, 2022, as Appl. No. 17/579,634.
Claims priority of application No. 2021-080952 (JP), filed on May 12, 2021.
Prior Publication US 2022/0365856 A1, Nov. 17, 2022
Int. Cl. G06F 11/20 (2006.01); G06F 3/06 (2006.01)
CPC G06F 11/2071 (2013.01) [G06F 3/065 (2013.01); G06F 3/0619 (2013.01); G06F 3/0683 (2013.01); G06F 2201/85 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A storage system comprising:
a plurality of controllers; and
a relay device,
the storage system being configured to perform mirror transfer between the plurality of controllers,
the relay device detects an abnormality in each device located between the plurality of controllers and aggregates error information in a register, and a first controller module that is a source of performing the mirror transfer among the plurality of controllers reads content of the register and determines whether the mirror transfer is completed normally, after the mirror transfer is performed,
the relay device aggregates the error information by associating each device with a corresponding address of the register, and the first controller reads the content at an address related to a path of the mirror transfer among all addresses of the register and determines whether the mirror transfer is completed normally.