US 11,740,799 B2
Storage system and input and output control method
Takashi Nagao, Tokyo (JP); Yuusaku Kiyota, Tokyo (JP); Hideaki Monji, Tokyo (JP); and Tomohiro Yoshihara, Tokyo (JP)
Assigned to HITACHI, LTD., Tokyo (JP)
Filed by Hitachi, Ltd., Tokyo (JP)
Filed on Apr. 8, 2022, as Appl. No. 17/716,002.
Application 17/716,002 is a continuation of application No. 16/995,909, filed on Aug. 18, 2020, granted, now 11,327,660.
Claims priority of application No. 2020-19794 (JP), filed on Feb. 7, 2020.
Prior Publication US 2022/0229561 A1, Jul. 21, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. G06F 3/06 (2006.01)
CPC G06F 3/0613 (2013.01) [G06F 3/0619 (2013.01); G06F 3/0622 (2013.01); G06F 3/0653 (2013.01); G06F 3/0659 (2013.01); G06F 3/0673 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A storage system comprising:
at least one arithmetic unit configured to receive an input and output request and perform data input and output processing;
a first memory coupled to the at least one arithmetic unit;
a second memory coupled to the at least one arithmetic unit; and
a plurality of storage drives configured to store data; wherein
the at least one arithmetic unit is configured to instruct at least one of the storage drives to read data,
the at least one of the storage drives is configured to read the data and store the data in the second memory,
the at least one arithmetic unit is configured to:
execute optional processing on the data stored in the second memory and store the data in the first memory; and
transmit the data stored in the first memory to a request source of a read request for the data, and
the optional processing is either processing to confirm an error of the data or processing to process the data.