Patent ID: 11880566
Assignee: HITACHI, LTD.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 0:
1. A storage system comprising:
a plurality of storage control units;
an accelerator; and
a storage drive having a storage medium for storing data, wherein
each of the plurality of storage control units includes a processor and a memory,
metadata for accessing the data stored in the storage drive is held in a memory of a first storage control unit among the plurality of storage control units and a memory of a second storage control unit among the plurality of storage control units,
when a write request for updating the stored data is received, a processor of the first storage control unit
performs a data amount reduction processing of the data to be updated,
updates, by the data amount reduction processing, metadata related to the data to be updated, and
transmits the updated metadata and a processing request for the updated metadata to the accelerator, and

the accelerator stores the updated metadata in the memory of the first storage control unit and the memory of the second storage control unit based on the processing request for the updated metadata.