Patent ID: 11886294
Assignee: HITACHI, LTD.
Field: Computer technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 0:
1. A distributed storage system comprising:
a plurality of sites communicating via a network,
wherein each of the plurality of sites includes:
a plurality of nodes; and
storage devices for storing data,

wherein a first node of a first site of the plurality of sites is configured to:
receive user data together with a write request from a host and store the received user data in the storage devices of the first site; and
transmit data for redundant data of the user data to a second site of the plurality of sites,

wherein a second node of the second site is configured to receive the data for redundant data from the first node and store the redundant data in the storage devices at the second site, and
wherein the first node is configured to receive a read request for the user data from the host, read the user data from the storage devices of the first site and transmit the user data to the host.