US 11,836,386 B2
Storage system and method of controlling storage system that set ports associated with a logical unit
Ryosuke Tatsumi, Tokyo (JP); Akira Yamamoto, Tokyo (JP); and Kazuki Matsugami, Tokyo (JP)
Assigned to HITACHI, LTD., Tokyo (JP)
Filed by Hitachi, Ltd., Tokyo (JP)
Filed on Aug. 5, 2022, as Appl. No. 17/881,945.
Application 17/881,945 is a continuation of application No. 17/198,665, filed on Mar. 11, 2021, granted, now 11,429,316.
Claims priority of application No. 2020-163134 (JP), filed on Sep. 29, 2020.
Prior Publication US 2022/0374165 A1, Nov. 24, 2022
Int. Cl. G06F 3/06 (2006.01)
CPC G06F 3/0659 (2013.01) [G06F 3/0607 (2013.01); G06F 3/067 (2013.01); G06F 3/0619 (2013.01); G06F 3/0622 (2013.01); G06F 3/0658 (2013.01); G06F 3/0679 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A storage system comprising:
a node including a plurality of storage control units each including a processor, a memory, and a port; and
a storage drive including a storage medium that stores data,
wherein the processor of the storage control unit provides a logical unit with which a host computer inputs and outputs the data,
wherein the logical units are associated with a plurality of ports relating to the plurality of different storage control units in a same node, and
wherein the plurality of storage control units each request data access and transmit and receive data with respect to the host computer via the plurality of ports,
wherein the processors of the storage control units process data that the host computer inputs and outputs to the storage drive,
wherein the memories of the storage control units store control information referred by the processors in order to access the data stored in the storage drive, and
wherein the storage system transmits the control information stored in the memories of the storage control units to another node that includes a plurality of other storage control units, stores the control information in the memories of the storage control units of the another node, and sets ports of the another node in consideration of a relationship between the storage control units of the node and the ports of the nodes, by determining the logical unit to be taken under charge of a port from the another node so that the plurality of ports associated with a same logical unit are associated with different storage control units of the another node, if the another node can access data relating to the control information.