Patent ID: 8972365
Filing Date: 2015-03-03
Classification: G06F,H04L

Abstract:
1. A storage system having a plurality of storages forming a chain in which each storage among the plurality of storages transmits an update request to another of the plurality of storages sequentially, and each of the plurality of storages stores a same replica, wherein each of the storages comprising: a memory; and a processor coupled to the memory, wherein the processor executes a process comprising: transmitting an update request for data which is commonly stored in the plurality of storages according to a predetermined transmission order indicating a path to transfer the update request; updating data when receiving an update request from another storage; determining whether the number of times the update request is received for the chain for which the own storage is a starting point exceeds a predetermined threshold value; and when it is determined that the number of times exceeds the predetermined threshold value in the determining, changing the predetermined transmission order to a transmission order in which one or more storages included in the path are excluded.